)]}' { "log": [ { "commit": "73ac36ea14fd18ea3dc057e41b16ff31a3c0bd5a", "tree": "7f187cade83d9ca9bd180273c25e1216a1dff506", "parents": [ "da2bdf9a6ff40b10d77620d0d76b02a738c103cb" ], "author": { "name": "Coly Li", "email": "coyli@suse.de", "time": "Wed Jan 07 18:09:16 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "fix similar typos to successfull\n\nWhen I review ocfs2 code, find there are 2 typos to \"successfull\". After\ndoing grep \"successfull \" in kernel tree, 22 typos found totally -- great\nminds always think alike :)\n\nThis patch fixes all the similar typos. Thanks for Randy\u0027s ack and comments.\n\nSigned-off-by: Coly Li \u003ccoyli@suse.de\u003e\nAcked-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nAcked-by: Roland Dreier \u003crolandd@cisco.com\u003e\nCc: Jeremy Kerr \u003cjk@ozlabs.org\u003e\nCc: Jeff Garzik \u003cjeff@garzik.org\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nCc: Mark Fasheh \u003cmfasheh@suse.com\u003e\nCc: Vlad Yasevich \u003cvladislav.yasevich@hp.com\u003e\nCc: Sridhar Samudrala \u003csri@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "da2bdf9a6ff40b10d77620d0d76b02a738c103cb", "tree": "16ca5b7ae8b504fbc2a5e54f934837b5d1172eaa", "parents": [ "9a8d5bb4ad829e66ab5428ccdce2cbc8ab0ac96c" ], "author": { "name": "Roel Kluin", "email": "roel.kluin@gmail.com", "time": "Wed Jan 07 18:09:15 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "Make various things static\n\nBuilding an allnoconfig kernel, sparse asked whether these could be\nstatic, so I checked, and they are only used in the file where they are\ndeclared.\n\nSigned-off-by: Roel Kluin \u003croel.kluin@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9a8d5bb4ad829e66ab5428ccdce2cbc8ab0ac96c", "tree": "dd328a002fdc141a9b45d1262c2956209644c95a", "parents": [ "df4927bf6ccf6278a97a44bd107080c71b269cb5" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:14 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "generic swap(): dcache: use swap() instead of private do_switch()\n\nUse the new generic implementation.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "df4927bf6ccf6278a97a44bd107080c71b269cb5", "tree": "aa84ac1dcc0c0df6e01f2b725163e4a411814bb6", "parents": [ "97e133b4543c5c677e768a8538d6d704c4218ff2" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:14 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "generic swap(): sched: remove local swap() macro\n\nUse the new generic implementation.\n\nSigned-off-by: Wu Fengguang \u003cwfg@linux.intel.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "97e133b4543c5c677e768a8538d6d704c4218ff2", "tree": "3473e5e7e634cab8cfb2c3b59c1bfe99182d7b70", "parents": [ "be857df1dd8d8e1491e60d999caf3b8446ccd475" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:13 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "generic swap(): ext4: remove local swap() macro\n\nUse the new generic implementation.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "be857df1dd8d8e1491e60d999caf3b8446ccd475", "tree": "c3c45d80066bab95bd6f677f05afebf4ba6efe56", "parents": [ "91f68b7359144aa40bb9668124543d15284750b4" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:12 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "generic swap(): ext3: remove local swap() macro\n\nUse the new generic implementation.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nCc: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "91f68b7359144aa40bb9668124543d15284750b4", "tree": "69f11509a40655c17a44da9b61debdb31209f208", "parents": [ "b53907c0100a353a7ac53bed260e735e5ccbbbcc" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:12 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:15 2009 -0800" }, "message": "generic swap(): introduce global macro swap(a, b)\n\nThere have been some local definitions of swap(), it\u0027s time to replace\nthem all with a uniform one.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b53907c0100a353a7ac53bed260e735e5ccbbbcc", "tree": "36314c4fdd0f149e563987aa5ee48f3e8205f962", "parents": [ "b67445fc17489fff5c8052147184e366abdb3d80" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:11 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "generic swap(): lib/sort.c: rename swap to swap_func\n\nThis is to avoid name clashes for the introduction of a global swap()\nmacro.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b67445fc17489fff5c8052147184e366abdb3d80", "tree": "282becc8eabef87c42d3e7440c31ff3195f633bd", "parents": [ "1a8a27c974d0f09c61874b81bf9670f1478b649a" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:10 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "generic swap(): iphase: rename swap() to swap_byte_order()\n\nIn preparation for the introduction of a generic swap() macro.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1a8a27c974d0f09c61874b81bf9670f1478b649a", "tree": "abd13170e74bca52b7740318b1967f1750bf9984", "parents": [ "c19a28e1193a6c854738d609ae9b2fe2f6e6bea4" ], "author": { "name": "Wu Fengguang", "email": "fengguang.wu@intel.com", "time": "Wed Jan 07 18:09:10 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "generic swap(): sparc: rename swap() to swap_ulong()\n\nIn preparation for the introduction of a generic swap() macro.\n\nSigned-off-by: Wu Fengguang \u003cfengguang.wu@intel.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c19a28e1193a6c854738d609ae9b2fe2f6e6bea4", "tree": "79a354f827a5d3656be3f55d18d31265750d9d06", "parents": [ "f15659628b43b27c20447c731456c39cbec973e9" ], "author": { "name": "Fernando Carrijo", "email": "fcarrijo@yahoo.com.br", "time": "Wed Jan 07 18:09:08 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "remove lots of double-semicolons\n\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nAcked-by: Theodore Ts\u0027o \u003ctytso@mit.edu\u003e\nAcked-by: Mark Fasheh \u003cmfasheh@suse.com\u003e\nAcked-by: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nAcked-by: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nAcked-by: Takashi Iwai \u003ctiwai@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f15659628b43b27c20447c731456c39cbec973e9", "tree": "86f3a346ddf017881005413eb31a032ac8623d6d", "parents": [ "921d58c0e6992f74d3a48180604a298f115d2dee" ], "author": { "name": "roel kluin", "email": "roel.kluin@gmail.com", "time": "Wed Jan 07 18:09:08 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "romfs: romfs_iget() - unsigned ino \u003e\u003d 0 is always true\n\nromfs_strnlen() returns int\nunsigned X \u003e\u003d 0 is always true\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: roel kluin \u003croel.kluin@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "921d58c0e6992f74d3a48180604a298f115d2dee", "tree": "db3128a5957a0ff95d2bce1166d61050b1b3e494", "parents": [ "4037014e3fb71e998189374e19ca141c59d15323" ], "author": { "name": "Magnus Damm", "email": "damm@igel.co.jp", "time": "Wed Jan 07 18:09:06 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "vmcore: remove saved_max_pfn check\n\nRemove the saved_max_pfn check from the /proc/vmcore function\nread_from_oldmem(). No need to verify, we should be able to just trust\nthat \"elfcorehdr\u003d\" is correctly passed to the crash kernel on the kernel\ncommand line like we do with other parameters.\n\nThe read_from_oldmem() function in fs/proc/vmcore.c is quite similar to\nread_from_oldmem() in drivers/char/mem.c, but only in the latter it makes\nsense to use saved_max_pfn. For oldmem it is used to determine when to\nstop reading. For vmcore we already have the elf header info pointing out\nthe physical memory regions, no need to pass the end-of- old-memory twice.\n\nRemoving the saved_max_pfn check from vmcore makes it possible for\narchitectures to skip oldmem but still support crash dump through vmcore -\nwithout the need for the old saved_max_pfn cruft.\n\nArchitectures that want to play safe can do the saved_max_pfn check in\ncopy_oldmem_page(). Not sure why anyone would want to do that, but that\u0027s\neven safer than today - the saved_max_pfn check in vmcore removed by this\npatch only checks the first page.\n\nSigned-off-by: Magnus Damm \u003cdamm@igel.co.jp\u003e\nAcked-by: Vivek Goyal \u003cvgoyal@redhat.com\u003e\nAcked-by: Simon Horman \u003chorms@verge.net.au\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "4037014e3fb71e998189374e19ca141c59d15323", "tree": "c422a2c48bfa7b702a5e3927475cc3cb1bffc928", "parents": [ "f89735c4e281e8642907b38640c076ae5048f3a6" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "w1: send status messages after command processing\n\nSend completion status of the commands to the userspace. Message and\nprotocol are described in the documentation.\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nCc: Paul Alfille \u003cpaul.alfille@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f89735c4e281e8642907b38640c076ae5048f3a6", "tree": "24539b43a7f74d083d747edf5b4eec8e533baebe", "parents": [ "325a06fb13614fd4e5ea36996c0ce043752a93a0" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:04 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:14 2009 -0800" }, "message": "w1: added w1 reset command\n\nCommand which allows to reset the bus.\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nCc: Paul Alfille \u003cpaul.alfille@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "325a06fb13614fd4e5ea36996c0ce043752a93a0", "tree": "f752f5791bb34567f4a014139159db9620d2c089", "parents": [ "c7e26631d27b61d66ea6fb9b113fb92f1fa20d90" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:03 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: move w1 commands from defines to enum\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nCc: Paul Alfille \u003cpaul.alfille@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c7e26631d27b61d66ea6fb9b113fb92f1fa20d90", "tree": "6f8099b1481af05c0a34d943bba71f4f2a647c3a", "parents": [ "e4e056aa3518197830c884b85268799b1868e8e3" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:03 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: allow master IO commands\n\nThis small patchset extendes existing commands with reset, master IO and\nstatus messages. Reset is used to reset the bus for given master device,\nmaster IO command allows to initiate IO against bus itself not selecting\nslave device first, which can be used to probe the device for example.\nAnd status messages carry command completion status back to the userspace\n(namely very useful to get -ENODEV from when requested device was not\nfound).\n\nGreat thanks to Paul Alfille of OWFS for testing and commands suggestions.\n\nThis patch:\n\nAllow starting of IO not against already found slave devices, but against\nthe bus itself, which can be used for example to probe devices.\n\n[akpm@linux-foundation.org: reindent switch statements]\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nCc: Paul Alfille \u003cpaul.alfille@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e4e056aa3518197830c884b85268799b1868e8e3", "tree": "2454ffb99f732c84a35ccac1f072b14b6c72cf9a", "parents": [ "3b8384070ea1dc358f6da6233b3b6c0926ae1bf4" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:02 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: documentation update\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3b8384070ea1dc358f6da6233b3b6c0926ae1bf4", "tree": "00535e5b18029c95f59efb68612ff2e57bb7ac82", "parents": [ "9be62e0b2fadaf5ffeb32fd1b910ef1fe6bd43db" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:01 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: list slaves commands\n\nInitiates search (or alarm search) and returns all found devices to\nuserspace. Found devices are not added into the system (i.e. they are\nnot attached to family devices or bus masters), it will be done via (if\nwas not done yet) usual timed searching.\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9be62e0b2fadaf5ffeb32fd1b910ef1fe6bd43db", "tree": "86d39cd9790a83275380d5f37495d76888c3153b", "parents": [ "610705e780395ef30a1b8e53de150c37381ca31f" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:09:01 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: add touch block command\n\nWrites and returns sampled data back to userspace.\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "610705e780395ef30a1b8e53de150c37381ca31f", "tree": "d847963358b5bc568e265b3807ef4b3de13ca7ef", "parents": [ "a5fd9139f74c722a190b3bd69bbd611a8d91b388" ], "author": { "name": "Evgeniy Polyakov", "email": "zbr@ioremap.net", "time": "Wed Jan 07 18:08:59 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: add list masters w1 command\n\nThis patch series introduces and extends several userspace commands\nused with netlink protocol.\n\nTouch block command allows to write data and return sampled data to\nthe userspace.\n\nExtended search and alarm seach commands to return list of slave\ndevices found during given search.\n\nList masters command allows to send all registered master IDs to the\nuserspace.\n\nGreat thanks to Paul Alfille (owfs) who\ntested this implementation and wrote w1-to-network daemon\nhttp://sourceforge.net/projects/w1repeater/ and\n\nFrederik Deweerdt and Randy Dunlap for review.\n\nThis patch:\n\nReturns list of registered bus master devices.\n\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nCc: Paul Alfille \u003cpaul.alfille@gmail.com\u003e\nCc: Frederik Deweerdt \u003cfrederik.deweerdt@xprog.eu\u003e\nCc: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a5fd9139f74c722a190b3bd69bbd611a8d91b388", "tree": "b2c56580746d94d7dfc7caf6bff2812314f53413", "parents": [ "09f50c95425318232c534d931d8c28b96a3ce2c5" ], "author": { "name": "Sascha Hauer", "email": "s.hauer@pengutronix.de", "time": "Wed Jan 07 18:08:58 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:13 2009 -0800" }, "message": "w1: add 1-wire master driver for i.MX27 / i.MX31\n\nThis patch adds support for the 1-wire master interface for i.MX27 and\ni.MX31.\n\nSigned-off-by: Luotao Fu \u003cl.fu@pengutronix.de\u003e\nSigned-off-by: Sascha Hauer \u003cs.hauer@pengutronix.de\u003e\nSigned-off-by: Evgeniy Polyakov \u003czbr@ioremap.net\u003e\nCc: Russell King \u003crmk@arm.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "09f50c95425318232c534d931d8c28b96a3ce2c5", "tree": "7182e7ae67de2e8b7d0cc58c2e746368e11f2c10", "parents": [ "ad8f07ccaddca1b0f52d0e9677855122a46cfafc" ], "author": { "name": "David Smith", "email": "dds@google.com", "time": "Wed Jan 07 18:08:57 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "tpm: clean up tpm_nsc driver for platform_device suspend/resume compliance\n\nSigned-off-by: Marcel Selhorst \u003ctpm@selhorst.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ad8f07ccaddca1b0f52d0e9677855122a46cfafc", "tree": "5796a3bb23c8b2cdd94453b21e361a3f14e3d3cf", "parents": [ "3cab7fd964916a5474dcaeb23b6723fbfb34cc66" ], "author": { "name": "Matthew Garrett", "email": "mjg59@srcf.ucam.org", "time": "Wed Jan 07 18:08:56 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "misc: add dell-laptop driver\n\nAdd a driver for controlling Dell-specific backlight and rfkill interfaces.\nThis driver makes use of the dcdbas interface to the Dell firmware to\nallow the backlight and rfkill interfaces on Dell systems to be driven\nthrough the standardised sysfs interfaces.\n\nSigned-off-by: Matthew Garrett \u003cmjg@redhat.com\u003e\nCc: Matt Domsch \u003cMatt_Domsch@dell.com\u003e\nCc: Ivo van Doorn \u003civdoorn@gmail.com\u003e\nCc: Len Brown \u003clenb@kernel.org\u003e\nCc: Richard Purdie \u003crpurdie@rpsys.net\u003e\nCc: Henrique de Moraes Holschuh \u003chmh@hmh.eng.br\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3cab7fd964916a5474dcaeb23b6723fbfb34cc66", "tree": "bdc3624a1a821e0d93a2abc5aa1c2918ccc4e62b", "parents": [ "f06295b44c296c8fb08823a3118468ae343b60f2" ], "author": { "name": "Matthew Garrett", "email": "mjg59@srcf.ucam.org", "time": "Wed Jan 07 18:08:54 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "dcdbas: export functionality for use in other drivers\n\nThe dcdbas code allows calls to be made into the firmware on Dell systems.\n Exporting this to other drivers allows them to implement Dell-specific\nfunctionality in a safe way.\n\nSigned-off-by: Matthew Garrett \u003cmjg@redhat.com\u003e\nCc: Matt Domsch \u003cMatt_Domsch@dell.com\u003e\nCc: Greg KH \u003cgreg@kroah.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f06295b44c296c8fb08823a3118468ae343b60f2", "tree": "cf50932653af81aae1dc33bbf18ba7d8a94f5223", "parents": [ "a6684999f7c6bddd75cf9755ad7ff44435f72fff" ], "author": { "name": "Kees Cook", "email": "kees.cook@canonical.com", "time": "Wed Jan 07 18:08:52 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "ELF: implement AT_RANDOM for glibc PRNG seeding\n\nWhile discussing[1] the need for glibc to have access to random bytes\nduring program load, it seems that an earlier attempt to implement\nAT_RANDOM got stalled. This implements a random 16 byte string, available\nto every ELF program via a new auxv AT_RANDOM vector.\n\n[1] http://sourceware.org/ml/libc-alpha/2008-10/msg00006.html\n\nUlrich said:\n\nglibc needs right after startup a bit of random data for internal\nprotections (stack canary etc). What is now in upstream glibc is that we\nalways unconditionally open /dev/urandom, read some data, and use it. For\nevery process startup. That\u0027s slow.\n\n...\n\nThe solution is to provide a limited amount of random data to the\nstarting process in the aux vector. I suggested 16 bytes and this is\nwhat the patch implements. If we need only 16 bytes or less we use the\ndata directly. If we need more we\u0027ll use the 16 bytes to see a PRNG.\nThis avoids the costly /dev/urandom use and it allows the kernel to use\nthe most adequate source of random data for this purpose. It might not\nbe the same pool as that for /dev/urandom.\n\nConcerns were expressed about the depletion of the randomness pool. But\nthis patch doesn\u0027t make the situation worse, it doesn\u0027t deplete entropy\nmore than happens now.\n\nSigned-off-by: Kees Cook \u003ckees.cook@canonical.com\u003e\nCc: Jakub Jelinek \u003cjakub@redhat.com\u003e\nCc: Andi Kleen \u003candi@firstfloor.org\u003e\nCc: Ulrich Drepper \u003cdrepper@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a6684999f7c6bddd75cf9755ad7ff44435f72fff", "tree": "4275daa54c1868ab289e361fec0ced01c891ec33", "parents": [ "61bce0f1371cfff497fe85594fd39d1a0b15ebe1" ], "author": { "name": "Sukadev Bhattiprolu", "email": "sukadev@linux.vnet.ibm.com", "time": "Wed Jan 07 18:08:50 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "mqueue: fix si_pid value in mqueue do_notify()\n\nIf a process registers for asynchronous notification on a POSIX message\nqueue, it gets a signal and a siginfo_t structure when a message arrives\non the message queue. The si_pid in the siginfo_t structure is set to the\nPID of the process that sent the message to the message queue.\n\nThe principle is the following:\n. when mq_notify(SIGEV_SIGNAL) is called, the caller registers for\n notification when a msg arrives. The associated pid structure is stroed into\n inode_info-\u003enotify_owner. Let\u0027s call this process P1.\n. when mq_send() is called by say P2, P2 sends a signal to P1 to notify\n him about msg arrival.\n\nThe way .si_pid is set today is not correct, since it doesn\u0027t take into account\nthe fact that the process that is sending the message might not be in the\nsame namespace as the notified one.\n\nThis patch proposes to set si_pid to the sender\u0027s pid into the notify_owner\nnamespace.\n\nSigned-off-by: Nadia Derbey \u003cNadia.Derbey@bull.net\u003e\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nAcked-by: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Bastian Blank \u003cbastian@waldi.eu.org\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "61bce0f1371cfff497fe85594fd39d1a0b15ebe1", "tree": "97871c4148856e39ffcc8a6ffec89495018729f1", "parents": [ "f9fb860f67b9542cd78d1558dec7058092b57d8e" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Jan 07 18:08:49 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "pid: generalize task_active_pid_ns\n\nCurrently task_active_pid_ns is not safe to call after a task becomes a\nzombie and exit_task_namespaces is called, as nsproxy becomes NULL. By\nreading the pid namespace from the pid of the task we can trivially solve\nthis problem at the cost of one extra memory read in what should be the\nsame cacheline as we read the namespace from.\n\nWhen moving things around I have made task_active_pid_ns out of line\nbecause keeping it in pid_namespace.h would require adding includes of\npid.h and sched.h that I don\u0027t think we want.\n\nThis change does make task_active_pid_ns unsafe to call during\ncopy_process until we attach a pid on the task_struct which seems to be a\nreasonable trade off.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Bastian Blank \u003cbastian@waldi.eu.org\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Nadia Derbey \u003cNadia.Derbey@bull.net\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f9fb860f67b9542cd78d1558dec7058092b57d8e", "tree": "1c14a2d7013df108b6103b7d24b1201fd78b922b", "parents": [ "6af866af34a96fed24a55979a78b6f73bd4e8e87" ], "author": { "name": "Eric W. Biederman", "email": "ebiederm@xmission.com", "time": "Wed Jan 07 18:08:46 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:12 2009 -0800" }, "message": "pid: implement ns_of_pid\n\nA current problem with the pid namespace is that it is easy to do pid\nrelated work after exit_task_namespaces which drops the nsproxy pointer.\n\nHowever if we are doing pid namespace related work we are always operating\non some struct pid which retains the pid_namespace pointer of the pid\nnamespace it was allocated in.\n\nSo provide ns_of_pid which allows us to find the pid namespace a pid was\nallocated in.\n\nUsing this we have the needed infrastructure to do pid namespace related\nwork at anytime we have a struct pid, removing the chance of accidentally\nhaving a NULL pointer dereference when accessing current-\u003ensproxy.\n\nSigned-off-by: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@linux.vnet.ibm.com\u003e\nCc: Oleg Nesterov \u003coleg@redhat.com\u003e\nCc: Roland McGrath \u003croland@redhat.com\u003e\nCc: Bastian Blank \u003cbastian@waldi.eu.org\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Nadia Derbey \u003cNadia.Derbey@bull.net\u003e\nAcked-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6af866af34a96fed24a55979a78b6f73bd4e8e87", "tree": "e0c4b27ce3b684ebb2f6fa3685051e01a86d7354", "parents": [ "300ed6cbb70718872cb4936d1d22ef295f9ba44d" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:08:45 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: remove remaining pointers to cpumask_t\n\nImpact: cleanups, use new cpumask API\n\nFinal trivial cleanups: mainly s/cpumask_t/struct cpumask\n\nNote there is a FIXME in generate_sched_domains(). A future patch will\nchange struct cpumask *doms to struct cpumask *doms[].\n(I suppose Rusty will do this.)\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "300ed6cbb70718872cb4936d1d22ef295f9ba44d", "tree": "56a1dd86be2d6e35b329131ef353a44b929bd53c", "parents": [ "645fcc9d2f6946f97a41c8d00edee38f8a6f0060" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:08:44 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: convert cpuset-\u003ecpus_allowed to cpumask_var_t\n\nImpact: use new cpumask API\n\nThis patch mainly does the following things:\n- change cs-\u003ecpus_allowed from cpumask_t to cpumask_var_t\n- call alloc_bootmem_cpumask_var() for top_cpuset in cpuset_init_early()\n- call alloc_cpumask_var() for other cpusets\n- replace cpus_xxx() to cpumask_xxx()\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "645fcc9d2f6946f97a41c8d00edee38f8a6f0060", "tree": "1d7ad63c9e1bace8f0ccac8814be04af92441ebf", "parents": [ "2341d1b6598c7146d64a5050b53a72a5a819617f" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:08:43 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: don\u0027t allocate trial cpuset on stack\n\nImpact: cleanups, reduce stack usage\n\nThis patch prepares for the next patch. When we convert\ncpuset.cpus_allowed to cpumask_var_t, (trialcs \u003d *cs) no longer works.\n\nAnother result of this patch is reducing stack usage of trialcs.\nsizeof(*cs) can be as large as 148 bytes on x86_64, so it\u0027s really not\ngood to have it on stack.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2341d1b6598c7146d64a5050b53a72a5a819617f", "tree": "1e278566d5fea4d2c02826b9ac0713ccd146fd92", "parents": [ "5771f0a2236df69683e9abea87f35f522c97ff94" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:08:42 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: convert cpuset_attach() to use cpumask_var_t\n\nImpact: reduce stack usage\n\nAllocate a global cpumask_var_t at boot, and use it in cpuset_attach(), so\nwe won\u0027t fail cpuset_attach().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5771f0a2236df69683e9abea87f35f522c97ff94", "tree": "afc960ceac00ab20f2139496e4fa9feeea516467", "parents": [ "5a7625df725a486ad600b0036b6111dbd6321c41" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:08:41 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: remove on stack cpumask_t in cpuset_can_attach()\n\nImpact: reduce stack usage\n\nJust use cs-\u003ecpus_allowed, and no need to allocate a cpumask_var_t.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujistu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5a7625df725a486ad600b0036b6111dbd6321c41", "tree": "a1b9c81371a6dffbed4a313ec25df33134925af2", "parents": [ "f5813d94279a18ff5936d675e24b44b44a571197" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:08:41 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: remove on stack cpumask_t in cpuset_sprintf_cpulist()\n\nThis patchset converts cpuset to use new cpumask API, and thus\nremove on stack cpumask_t to reduce stack usage.\n\nBefore:\n # cat kernel/cpuset.c include/linux/cpuset.h | grep -c cpumask_t\n 21\nAfter:\n # cat kernel/cpuset.c include/linux/cpuset.h | grep -c cpumask_t\n 0\n\nThis patch:\n\nImpact: reduce stack usage\n\nIt\u0027s safe to call cpulist_scnprintf inside callback_mutex, and thus we can\njust remove the cpumask_t and no need to allocate a cpumask_var_t.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nAcked-by: Mike Travis \u003ctravis@sgi.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f5813d94279a18ff5936d675e24b44b44a571197", "tree": "0c565bd5535f0f5623984e65403bda9c41b3a148", "parents": [ "13337714f3b0307dc7f75ef5d83ecf0db2abbd65" ], "author": { "name": "Miao Xie", "email": "miaox@cn.fujitsu.com", "time": "Wed Jan 07 18:08:40 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpusets: set task\u0027s cpu_allowed to cpu_possible_map when attaching it into top cpuset\n\nI found a bug on my dual-cpu box. I created a sub cpuset in top cpuset\nand assign 1 to its cpus. And then we attach some tasks into this sub\ncpuset. After this, we offline CPU1. Now, the tasks in this new cpuset\nare moved into top cpuset automatically because there is no cpu in sub\ncpuset. Then we online CPU1, we find all the tasks which doesn\u0027t belong\nto top cpuset originally just run on CPU0.\n\nWe fix this bug by setting task\u0027s cpu_allowed to cpu_possible_map when\nattaching it into top cpuset. This method needn\u0027t modify the current\nbehavior of cpusets on CPU hotplug, and all of tasks in top cpuset use\ncpu_possible_map to initialize their cpu_allowed.\n\nSigned-off-by: Miao Xie \u003cmiaox@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "13337714f3b0307dc7f75ef5d83ecf0db2abbd65", "tree": "f76dd8961b9287b25e2ea24d2d34fecc52d2c8a0", "parents": [ "e7c5ec9193d32b9559a3bb8893ceedbda85201ff" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Wed Jan 07 18:08:39 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:11 2009 -0800" }, "message": "cpuset: rcu_read_lock() to protect task_cs()\n\ntask_cs() calls task_subsys_state().\n\nWe must use rcu_read_lock() to protect cgroup_subsys_state().\n\nIt\u0027s correct that top_cpuset is never freed, but cgroup_subsys_state()\naccesses css_set, this css_set maybe freed when task_cs() called.\n\nWe use use rcu_read_lock() to protect it.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e7c5ec9193d32b9559a3bb8893ceedbda85201ff", "tree": "fd7505c03e2c7525a110a702907c0604c233e2d9", "parents": [ "2cb378c862777d050c20db903b119a029845fdcb" ], "author": { "name": "Paul Menage", "email": "menage@google.com", "time": "Wed Jan 07 18:08:38 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "cgroups: add css_tryget()\n\nAdd css_tryget(), that obtains a counted reference on a CSS. It is used\nin situations where the caller has a \"weak\" reference to the CSS, i.e.\none that does not protect the cgroup from removal via a reference count,\nbut would instead be cleaned up by a destroy() callback.\n\ncss_tryget() will return true on success, or false if the cgroup is being\nremoved.\n\nThis is similar to Kamezawa Hiroyuki\u0027s patch from a week or two ago, but\nwith the difference that in the event of css_tryget() racing with a\ncgroup_rmdir(), css_tryget() will only return false if the cgroup really\ndoes get removed.\n\nThis implementation is done by biasing css-\u003erefcnt, so that a refcnt of 1\nmeans \"releasable\" and 0 means \"released or releasing\". In the event of a\nrace, css_tryget() distinguishes between \"released\" and \"releasing\" by\nchecking for the CSS_REMOVED flag in css-\u003eflags.\n\nSigned-off-by: Paul Menage \u003cmenage@google.com\u003e\nTested-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2cb378c862777d050c20db903b119a029845fdcb", "tree": "5512511acf9d66338039f9698e456f1e3254970b", "parents": [ "999cd8a450f8f93701669a61cac4d3b19eca07e8" ], "author": { "name": "Paul Menage", "email": "menage@google.com", "time": "Wed Jan 07 18:08:37 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "cgroups: use hierarchy_mutex in memory controller\n\nUpdate the memory controller to use its hierarchy_mutex rather than\ncalling cgroup_lock() to protected against cgroup_mkdir()/cgroup_rmdir()\nfrom occurring in its hierarchy.\n\nSigned-off-by: Paul Menage \u003cmenage@google.com\u003e\nTested-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "999cd8a450f8f93701669a61cac4d3b19eca07e8", "tree": "990e5b08e6db971d2e9943f89abf39e7c8f4cb1e", "parents": [ "b5a84319a4343a0db753436fd8147e61eaafa7ea" ], "author": { "name": "Paul Menage", "email": "menage@google.com", "time": "Wed Jan 07 18:08:36 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "cgroups: add a per-subsystem hierarchy_mutex\n\nThese patches introduce new locking/refcount support for cgroups to\nreduce the need for subsystems to call cgroup_lock(). This will\nultimately allow the atomicity of cgroup_rmdir() (which was removed\nrecently) to be restored.\n\nThese three patches give:\n\n1/3 - introduce a per-subsystem hierarchy_mutex which a subsystem can\n use to prevent changes to its own cgroup tree\n\n2/3 - use hierarchy_mutex in place of calling cgroup_lock() in the\n memory controller\n\n3/3 - introduce a css_tryget() function similar to the one recently\n proposed by Kamezawa, but avoiding spurious refcount failures in\n the event of a race between a css_tryget() and an unsuccessful\n cgroup_rmdir()\n\nFuture patches will likely involve:\n\n- using hierarchy mutex in place of cgroup_lock() in more subsystems\n where appropriate\n\n- restoring the atomicity of cgroup_rmdir() with respect to cgroup_create()\n\nThis patch:\n\nAdd a hierarchy_mutex to the cgroup_subsys object that protects changes to\nthe hierarchy observed by that subsystem. It is taken by the cgroup\nsubsystem (in addition to cgroup_mutex) for the following operations:\n\n- linking a cgroup into that subsystem\u0027s cgroup tree\n- unlinking a cgroup from that subsystem\u0027s cgroup tree\n- moving the subsystem to/from a hierarchy (including across the\n bind() callback)\n\nThus if the subsystem holds its own hierarchy_mutex, it can safely\ntraverse its own hierarchy.\n\nSigned-off-by: Paul Menage \u003cmenage@google.com\u003e\nTested-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b5a84319a4343a0db753436fd8147e61eaafa7ea", "tree": "5faae671b431b50a32a2d8c7a57cc9361d8f336d", "parents": [ "544122e5e0ee27d5aac4a441f7746712afbf248c" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:35 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "memcg: fix shmem\u0027s swap accounting\n\nNow, you can see following even when swap accounting is enabled.\n\n 1. Create Group 01, and 02.\n 2. allocate a \"file\" on tmpfs by a task under 01.\n 3. swap out the \"file\" (by memory pressure)\n 4. Read \"file\" from a task in group 02.\n 5. the charge of \"file\" is moved to group 02.\n\nThis is not ideal behavior. This is because SwapCache which was loaded\nby read-ahead is not taken into account..\n\nThis is a patch to fix shmem\u0027s swapcache behavior.\n - remove mem_cgroup_cache_charge_swapin().\n - Add SwapCache handler routine to mem_cgroup_cache_charge().\n By this, shmem\u0027s file cache is charged at add_to_page_cache()\n with GFP_NOWAIT.\n - pass the page of swapcache to shrink_mem_cgroup.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "544122e5e0ee27d5aac4a441f7746712afbf248c", "tree": "8c5f87b19501478924654ae83a8751fde5dd51d4", "parents": [ "54595fe2652f04dc8f5b985312c7cef5aa7bf722" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:34 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "memcg: fix LRU accounting for SwapCache\n\nNow, a page can be deleted from SwapCache while do_swap_page().\nmemcg-fix-swap-accounting-leak-v3.patch handles that, but, LRU handling is\nstill broken. (above behavior broke assumption of memcg-synchronized-lru\npatch.)\n\nThis patch is a fix for LRU handling (especially for per-zone counters).\nAt charging SwapCache,\n - Remove page_cgroup from LRU if it\u0027s not used.\n - Add page cgroup to LRU if it\u0027s not linked to.\n\nReported-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "54595fe2652f04dc8f5b985312c7cef5aa7bf722", "tree": "4e63df850afb307a170c045217b2097aae271b78", "parents": [ "a7ba0eef3af51cd1b6fc4028e4705b3ea2ea9469" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:33 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "memcg: use css_tryget in memcg\n\nFrom:KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\n\ncss_tryget() newly is added and we can know css is alive or not and get\nrefcnt of css in very safe way. (\"alive\" here means \"rmdir/destroy\" is\nnot called.)\n\nThis patch replaces css_get() to css_tryget(), where I cannot explain\nwhy css_get() is safe. And removes memcg-\u003eobsolete flag.\n\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a7ba0eef3af51cd1b6fc4028e4705b3ea2ea9469", "tree": "70e43097041eed321be38d1af4ed65e41d1ebff9", "parents": [ "03f3c433648a97ae7c86be789edba67690f6ea60" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:32 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "memcg: fix double free and make refcnt sane\n\n1. Fix double-free BUG in error route of mem_cgroup_create().\n mem_cgroup_free() itself frees per-zone-info.\n 2. Making refcnt of memcg simple.\n Add 1 refcnt at creation and call free when refcnt goes down to 0.\n\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "03f3c433648a97ae7c86be789edba67690f6ea60", "tree": "d92a17f6fe9d90d3a6b46762742ef239bf5ecc44", "parents": [ "42e9abb628def2c335a4ecf130bb6c88d916d885" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:31 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:10 2009 -0800" }, "message": "memcg: fix swap accounting leak\n\nFix swapin charge operation of memcg.\n\nNow, memcg has hooks to swap-out operation and checks SwapCache is really\nunused or not. That check depends on contents of struct page. I.e. If\nPageAnon(page) \u0026\u0026 page_mapped(page), the page is recoginized as\nstill-in-use.\n\nNow, reuse_swap_page() calles delete_from_swap_cache() before establishment\nof any rmap. Then, in followinig sequence\n\n\t(Page fault with WRITE)\n\ttry_charge() (charge +\u003d PAGESIZE)\n\tcommit_charge() (Check page_cgroup is used or not..)\n\treuse_swap_page()\n\t\t-\u003e delete_from_swapcache()\n\t\t\t-\u003e mem_cgroup_uncharge_swapcache() (charge -\u003d PAGESIZE)\n\t......\nNew charge is uncharged soon....\nTo avoid this, move commit_charge() after page_mapcount() goes up to 1.\nBy this,\n\n\ttry_charge()\t\t(usage +\u003d PAGESIZE)\n\treuse_swap_page()\t(may usage -\u003d PAGESIZE if PCG_USED is set)\n\tcommit_charge()\t\t(If page_cgroup is not marked as PCG_USED,\n\t\t\t\t add new charge.)\nAccounting will be correct.\n\nChangelog (v2) -\u003e (v3)\n - fixed invalid charge to swp_entry\u003d\u003d0.\n - updated documentation.\nChangelog (v1) -\u003e (v2)\n - fixed comment.\n\n[nishimura@mxp.nes.nec.co.jp: swap accounting leak doc fix]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nTested-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "42e9abb628def2c335a4ecf130bb6c88d916d885", "tree": "e626dcc9d8fff5834c419e39dce57bed765aa09a", "parents": [ "7f4d454dee2e0bdd21bafd413d1c53e443a26540" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Jan 07 18:08:30 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: change try_to_free_pages to hierarchical_reclaim\n\nmem_cgroup_hierarchicl_reclaim() works properly even when !use_hierarchy\nnow (by memcg-hierarchy-avoid-unnecessary-reclaim.patch), so, instead of\ntry_to_free_mem_cgroup_pages(), it should be used in many cases.\n\nThe only exception is force_empty. The group has no children in this\ncase.\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7f4d454dee2e0bdd21bafd413d1c53e443a26540", "tree": "abf54c2bd7c91fe09685e42b3a92d84679403058", "parents": [ "a5e924f5f8abf97944e625d74967cc9452cfbce8" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Jan 07 18:08:29 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: avoid deadlock caused by race between oom and cpuset_attach\n\nmpol_rebind_mm(), which can be called from cpuset_attach(), does\ndown_write(mm-\u003emmap_sem). This means down_write(mm-\u003emmap_sem) can be\ncalled under cgroup_mutex.\n\nOTOH, page fault path does down_read(mm-\u003emmap_sem) and calls\nmem_cgroup_try_charge_xxx(), which may eventually calls\nmem_cgroup_out_of_memory(). And mem_cgroup_out_of_memory() calls\ncgroup_lock(). This means cgroup_lock() can be called under\ndown_read(mm-\u003emmap_sem).\n\nIf those two paths race, deadlock can happen.\n\nThis patch avoid this deadlock by:\n - remove cgroup_lock() from mem_cgroup_out_of_memory().\n - define new mutex (memcg_tasklist) and serialize mem_cgroup_move_task()\n (-\u003eattach handler of memory cgroup) and mem_cgroup_out_of_memory.\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a5e924f5f8abf97944e625d74967cc9452cfbce8", "tree": "3a90d35e270617933f352c8c748880a62fa6eeca", "parents": [ "3bb4edf24b26358eccfc69ac8b9a9c36ccc312da" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Jan 07 18:08:28 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: remove mem_cgroup_try_charge\n\nAfter previous patch, mem_cgroup_try_charge is not used by anyone, so we\ncan remove it.\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3bb4edf24b26358eccfc69ac8b9a9c36ccc312da", "tree": "61093878836115496bd52646670d123809e1bc99", "parents": [ "9836d89191edd4887ed026a9ce53d9dfac62ec1c" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Jan 07 18:08:28 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: don\u0027t trigger oom at page migration\n\nI think triggering OOM at mem_cgroup_prepare_migration would be just a bit\noverkill. Returning -ENOMEM would be enough for\nmem_cgroup_prepare_migration. The caller would handle the case anyway.\n\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9836d89191edd4887ed026a9ce53d9dfac62ec1c", "tree": "c5c4c579f9f9bdccb1ae48778cb129d94321c38f", "parents": [ "fee7b548e6f2bd4bfd03a1a45d3afd593de7d5e9" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:27 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: explain details and test document\n\nDocumentation for implementation details and how to test.\n\nJust an example. feel free to modify, add, remove lines.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fee7b548e6f2bd4bfd03a1a45d3afd593de7d5e9", "tree": "90a8b610298013c6ce2d9bb7970b8e6d2a66f488", "parents": [ "c772be939e078afd2505ede7d596a30f8f61de95" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:26 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: show real limit under hierarchy mode\n\nShow \"real\" limit of memcg. This helps my debugging and maybe useful for\nusers.\n\nWhile testing hierarchy like this\n\n\tmount -t cgroup none /cgroup -t memory\n\tmkdir /cgroup/A\n\tset use_hierarchy\u003d\u003d1 to \"A\"\n\tmkdir /cgroup/A/01\n\tmkdir /cgroup/A/01/02\n\tmkdir /cgroup/A/01/03\n\tmkdir /cgroup/A/01/03/04\n\tmkdir /cgroup/A/08\n\tmkdir /cgroup/A/08/01\n\t....\nand set each own limit to them, \"real\" limit of each memcg is unclear.\nThis patch shows real limit by checking all ancestors.\n\nChangelog: (v1) -\u003e (v2)\n\t- remove \"if\" and use \"min(a,b)\"\n\nAcked-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c772be939e078afd2505ede7d596a30f8f61de95", "tree": "2cf3157fdd2b3570e105f2d91576585750526fb3", "parents": [ "a7885eb8ad465ec9db99ac5b5e6680f0ca8e11c8" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:25 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:09 2009 -0800" }, "message": "memcg: fix calculation of active_ratio\n\nCurrently, inactive_ratio of memcg is calculated at setting limit.\nbecause page_alloc.c does so and current implementation is straightforward\nporting.\n\nHowever, memcg introduced hierarchy feature recently. In hierarchy\nrestriction, memory limit is not only decided memory.limit_in_bytes of\ncurrent cgroup, but also parent limit and sibling memory usage.\n\nThen, The optimal inactive_ratio is changed frequently. So, everytime\ncalculation is better.\n\nTested-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a7885eb8ad465ec9db99ac5b5e6680f0ca8e11c8", "tree": "4f3ffaa399fbc16003cc1787228f10543dc9c3ef", "parents": [ "2733c06ac864ed40b9dfbbd5270f3f16949bd4a1" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:24 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: swappiness\n\nCurrently, /proc/sys/vm/swappiness can change swappiness ratio for global\nreclaim. However, memcg reclaim doesn\u0027t have tuning parameter for itself.\n\nIn general, the optimal swappiness depend on workload. (e.g. hpc\nworkload need to low swappiness than the others.)\n\nThen, per cgroup swappiness improve administrator tunability.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2733c06ac864ed40b9dfbbd5270f3f16949bd4a1", "tree": "4847ad04739d6a25dede0e0329295c15cbb79dda", "parents": [ "e72e2bd6747c7a5c432197b6614cf3a387e61a0e" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:23 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: protect prev_priority\n\nCurrently, mem_cgroup doesn\u0027t have own lock and almost its member doesn\u0027t\nneed. (e.g. mem_cgroup-\u003einfo is protected by zone lock, mem_cgroup-\u003estat\nis per cpu variable)\n\nHowever, there is one explict exception. mem_cgroup-\u003eprev_priorit need\nlock, but doesn\u0027t protect. Luckly, this is NOT bug because prev_priority\nisn\u0027t used for current reclaim code.\n\nHowever, we plan to use prev_priority future again. Therefore, fixing is\nbetter.\n\nIn addition, we plan to reuse this lock for another member. Then\n\"reclaim_param_lock\" name is better than \"prev_priority_lock\".\n\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e72e2bd6747c7a5c432197b6614cf3a387e61a0e", "tree": "2ab1a184ff5844c01a7c8b5a9392d1c906b37abe", "parents": [ "7f016ee8b6a9a43f768e6252021f169abec4fa1f" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:23 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: rename scan global lru\n\nRename scan_global_lru() to scanning_global_lru().\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7f016ee8b6a9a43f768e6252021f169abec4fa1f", "tree": "68498191489e051a23da0d39de2b0257714e58b0", "parents": [ "9439c1c95b5c25b8031b2a7eb7e1590eb84be7f5" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:22 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: show reclaim stat\n\nAdd the following four fields to memory.stat file:\n\n - inactive_ratio\n - recent_rotated_anon\n - recent_rotated_file\n - recent_scanned_anon\n - recent_scanned_file\n\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9439c1c95b5c25b8031b2a7eb7e1590eb84be7f5", "tree": "79eaae56278407e0a223e562a2d0079834ca5529", "parents": [ "3e2f41f1f64744f7942980d93cc93dd3e5924560" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:21 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: remove mem_cgroup_cal_reclaim()\n\nNow, get_scan_ratio() return correct value although memcg reclaim. Then,\nmem_cgroup_calc_reclaim() can be removed.\n\nSo, memcg reclaim get the same capability of anon/file reclaim balancing\nas global reclaim now.\n\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@redhat.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3e2f41f1f64744f7942980d93cc93dd3e5924560", "tree": "7b605c407b7470877fd9c5c853407f75edcbeb49", "parents": [ "a3d8e0549d913e30968fa02e505dfe02c0a23e0d" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:20 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: add zone_reclaim_stat\n\nIntroduce mem_cgroup_per_zone::reclaim_stat member and its statics\ncollecting function.\n\nNow, get_scan_ratio() can calculate correct value on memcg reclaim.\n\n[hugh@veritas.com: avoid reclaim_stat oops when disabled]\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a3d8e0549d913e30968fa02e505dfe02c0a23e0d", "tree": "e4d3df33666a18614289ae7bc76c27ad7950eb73", "parents": [ "14797e2363c2b2f1ce139fd1c5a215e4e05aa1d9" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:19 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: add mem_cgroup_zone_nr_pages()\n\nIntroduce mem_cgroup_zone_nr_pages(). It is called by zone_nr_pages()\nhelper function.\n\nThis patch doesn\u0027t have any behavior change.\n\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "14797e2363c2b2f1ce139fd1c5a215e4e05aa1d9", "tree": "a56edaa680c7c338a5a3043aa24897d7f668b6c9", "parents": [ "549927620b04a8f8073ce2ee2a8977f209af2ee5" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:18 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:08 2009 -0800" }, "message": "memcg: add inactive_anon_is_low()\n\nThe inactive_anon_is_low() is key component of active/inactive anon\nbalancing on reclaim. However current inactive_anon_is_low() function\nonly consider global reclaim.\n\nTherefore, we need following ugly scan_global_lru() condition.\n\n\tif (lru \u003d\u003d LRU_ACTIVE_ANON \u0026\u0026\n\t (!scan_global_lru(sc) || inactive_anon_is_low(zone))) {\n\t\tshrink_active_list(nr_to_scan, zone, sc, priority, file);\n\t\treturn 0;\n\nit cause that memcg reclaim always deactivate pages when shrink_list() is\ncalled. To make mem_cgroup_inactive_anon_is_low() improve active/inactive\nanon balancing of memcgroup.\n\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Cyrill Gorcunov \u003cgorcunov@gmail.com\u003e\nCc: \"Pekka Enberg\" \u003cpenberg@cs.helsinki.fi\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "549927620b04a8f8073ce2ee2a8977f209af2ee5", "tree": "6451507892fb353732fe959b2bf0a171fa3ac20b", "parents": [ "eeee9a8cd1e93c8b94e7788790fa9e2f8910c779" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:18 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "memcg: add null check to page_cgroup_zoneinfo()\n\nIf CONFIG_CGROUP_MEM_RES_CTLR_SWAP\u003dy, page_cgroup::mem_cgroup can be NULL.\nTherefore null checking is better.\n\nA later patch uses this function.\n\nAcked-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eeee9a8cd1e93c8b94e7788790fa9e2f8910c779", "tree": "2ef0a61a4ce12410ecfa48014a0181c03e73a3cb", "parents": [ "c9f299d9862deadf9fbee3ca28d915fdb006975a" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:17 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "mm: make get_scan_ratio() safe for memcg\n\nCurrently, get_scan_ratio() always calculate the balancing value for\nglobal reclaim and memcg reclaim doesn\u0027t use it. Therefore it doesn\u0027t\nhave scan_global_lru() condition.\n\nHowever, we plan to expand get_scan_ratio() to be usable for memcg too,\nlatter. Then, The dependency code of global reclaim in the\nget_scan_ratio() insert into scan_global_lru() condision explictly.\n\nThis patch doesn\u0027t have any functional change.\n\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c9f299d9862deadf9fbee3ca28d915fdb006975a", "tree": "2979e1eb8fe7e15369f01bcb405a029c18ca3e66", "parents": [ "6e9015716ae9b59e9635d692fddfcfb9582c146c" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:16 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "mm: add zone nr_pages helper function\n\nAdd zone_nr_pages() helper function.\n\nIt is used by a later patch. This patch doesn\u0027t have any functional\nchange.\n\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6e9015716ae9b59e9635d692fddfcfb9582c146c", "tree": "e1876d3822c46a20e1c35b41580f5ef6b2f6e053", "parents": [ "f89eb90e33fd4e4e0cc1a6d20afd63c5a561885a" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:15 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "mm: introduce zone_reclaim struct\n\nAdd zone_reclam_stat struct for later enhancement.\n\nA later patch uses this. This patch doesn\u0027t any behavior change (yet).\n\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f89eb90e33fd4e4e0cc1a6d20afd63c5a561885a", "tree": "2e39e02196dda539c900383ab03f08a311124cd9", "parents": [ "670ec2f170301425fc4fdfa63d40652071fe85f6" ], "author": { "name": "KOSAKI Motohiro", "email": "kosaki.motohiro@jp.fujitsu.com", "time": "Wed Jan 07 18:08:14 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "inactive_anon_is_low: move to vmscan\n\nThe inactive_anon_is_low() is called only vmscan. Then it can move to\nvmscan.c\n\nThis patch doesn\u0027t have any functional change.\n\nReviewd-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nAcked-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "670ec2f170301425fc4fdfa63d40652071fe85f6", "tree": "37a25cfc34c3ddada5bbb428cf1d4842ed30df1f", "parents": [ "a7fe942e94b2f66aa0f11d37699c0ec8155d3ad1" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Jan 07 18:08:13 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "memcg: hierarchy avoid unnecessary reclaim\n\nIf hierarchy is not used, no tree-walk is necessary.\n\nReviewed-by: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a7fe942e94b2f66aa0f11d37699c0ec8155d3ad1", "tree": "27525266a70f8bd9aadc45695ed8db220eaf2e9a", "parents": [ "b85a96c0b6cb79c67e7b01b66368f2e31579d7c5" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:13 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "memcg: swapout refcnt fix\n\ncss\u0027s refcnt is dropped before end of following access.\nHold it until end of access.\n\nReported-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b85a96c0b6cb79c67e7b01b66368f2e31579d7c5", "tree": "178005176284faef0f8a47293eaddd2885062f53", "parents": [ "f9717d28d673468883df8ac34b47268719ac5a3d" ], "author": { "name": "Daisuke Nishimura", "email": "nishimura@mxp.nes.nec.co.jp", "time": "Wed Jan 07 18:08:12 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:07 2009 -0800" }, "message": "memcg: memory swap controller: fix limit check\n\nThere are scatterd calls of res_counter_check_under_limit(), and most of\nthem don\u0027t take mem+swap accounting into account.\n\ndefine mem_cgroup_check_under_limit() and avoid direct use of\nres_counter_check_limit().\n\nReported-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f9717d28d673468883df8ac34b47268719ac5a3d", "tree": "ecb16bf21d33c7eaa34bdfb4af3ecfe2ca11a9b6", "parents": [ "2c26fdd70c3094fa3e84caf9ef434911933d5477" ], "author": { "name": "Nikanth Karthikesan", "email": "knikanth@suse.de", "time": "Wed Jan 07 18:08:11 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcg: check group leader fix\n\nRemove unnecessary codes (...fragments of not-implemented\nfunctionalilty...)\n\nReported-by: Nikanth Karthikesan \u003cknikanth@suse.de\u003e\nSigned-off-by: Nikanth Karthikesan \u003cknikanth@suse.de\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2c26fdd70c3094fa3e84caf9ef434911933d5477", "tree": "06a3bafc12f5f8fd91d9ed1fca5ea0a632ef2004", "parents": [ "887007561ae58628f03aa9046949747c04f63be8" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:10 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcg: revert gfp mask fix\n\nMy patch, memcg-fix-gfp_mask-of-callers-of-charge.patch changed gfp_mask\nof callers of charge to be GFP_HIGHUSER_MOVABLE for showing what will\nhappen at memory reclaim.\n\nBut in recent discussion, it\u0027s NACKed because it sounds ugly.\n\nThis patch is for reverting it and add some clean up to gfp_mask of\ncallers of charge. No behavior change but need review before generating\nHUNK in deep queue.\n\nThis patch also adds explanation to meaning of gfp_mask passed to charge\nfunctions in memcontrol.h.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "887007561ae58628f03aa9046949747c04f63be8", "tree": "2cc7e5b3028070303121457bc63dd155df2158b4", "parents": [ "a636b327f731143ccc544b966cfd8de6cb6d72c6" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:09 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcg: fix reclaim result checks\n\ncheck_under_limit logic was wrong and this check should be against\nmem_over_limit rather than mem.\n\nReported-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Jan Blunck \u003cjblunck@suse.de\u003e\nCc: Hirokazu Takahashi \u003ctaka@valinux.co.jp\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a636b327f731143ccc544b966cfd8de6cb6d72c6", "tree": "e53b03b64e8ebca20649c2d877bc4c3ef54ec34c", "parents": [ "2e4d40915fb85207fe48cfc31201824ec6d7426e" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:08 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcg: avoid unnecessary system-wide-oom-killer\n\nCurrent mmtom has new oom function as pagefault_out_of_memory(). It\u0027s\nadded for select bad process rathar than killing current.\n\nWhen memcg hit limit and calls OOM at page_fault, this handler called and\nsystem-wide-oom handling happens. (means kernel panics if panic_on_oom is\ntrue....)\n\nTo avoid overkill, check memcg\u0027s recent behavior before starting\nsystem-wide-oom.\n\nAnd this patch also fixes to guarantee \"don\u0027t accnout against process with\nTIF_MEMDIE\". This is necessary for smooth OOM.\n\n[akpm@linux-foundation.org: build fix]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Badari Pulavarty \u003cpbadari@us.ibm.com\u003e\nCc: Jan Blunck \u003cjblunck@suse.de\u003e\nCc: Hirokazu Takahashi \u003ctaka@valinux.co.jp\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "2e4d40915fb85207fe48cfc31201824ec6d7426e", "tree": "60f4a8ce1278a861ff530885353da74d1cf0bdb4", "parents": [ "18f59ea7de08db2449ba99185e8d8cc30e7acac5" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Wed Jan 07 18:08:07 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcontrol: rcu_read_lock() to protect mm_match_cgroup()\n\nmm_match_cgroup() calls cgroup_subsys_state().\n\nWe must use rcu_read_lock() to protect cgroup_subsys_state().\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "18f59ea7de08db2449ba99185e8d8cc30e7acac5", "tree": "34aa342a7984c72f7c9fbae0dd95d2fe9e20bc25", "parents": [ "6d61ef409d6ba168972f7c2f8c35baaade636a58" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Wed Jan 07 18:08:07 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcg: memory cgroup hierarchy feature selector\n\nDon\u0027t enable multiple hierarchy support by default. This patch introduces\na features element that can be set to enable the nested depth hierarchy\nfeature. This feature can only be enabled when the cgroup for which the\nfeature this is enabled, has no children.\n\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "6d61ef409d6ba168972f7c2f8c35baaade636a58", "tree": "b43ef8d2426ced40bd3ed4741ea8523e4496da23", "parents": [ "28dbc4b6a01fb579a9441c7b81e3d3413dc452df" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Wed Jan 07 18:08:06 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:06 2009 -0800" }, "message": "memcg: memory cgroup hierarchical reclaim\n\nThis patch introduces hierarchical reclaim. When an ancestor goes over\nits limit, the charging routine points to the parent that is above its\nlimit. The reclaim process then starts from the last scanned child of the\nancestor and reclaims until the ancestor goes below its limit.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[d-nishimura@mtf.biglobe.ne.jp: mem_cgroup_from_res_counter should handle both mem-\u003eres and mem-\u003ememsw]\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "28dbc4b6a01fb579a9441c7b81e3d3413dc452df", "tree": "c45d94be6cd243f3e677ec8279bfec87855802d0", "parents": [ "52bc0d82100cd896213a9a25ec01c1ba87b939db" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Wed Jan 07 18:08:05 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: memory cgroup resource counters for hierarchy\n\nAdd support for building hierarchies in resource counters. Cgroups allows\nus to build a deep hierarchy, but we currently don\u0027t link the resource\ncounters belonging to the memory controller control groups, in the same\nfashion as the corresponding cgroup entries in the cgroup hierarchy. This\npatch provides the infrastructure for resource counters that have the same\nhiearchy as their cgroup counter parts.\n\nThese set of patches are based on the resource counter hiearchy patches\nposted by Pavel Emelianov.\n\nNOTE: Building hiearchies is expensive, deeper hierarchies imply charging\nthe all the way up to the root. It is known that hiearchies are\nexpensive, so the user needs to be careful and aware of the trade-offs\nbefore creating very deep ones.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "52bc0d82100cd896213a9a25ec01c1ba87b939db", "tree": "9d697d032c9374e2d14639ca8ef48577d020d573", "parents": [ "f8d665422603ee1b8ed04dcad4242f14d623c941" ], "author": { "name": "Balbir Singh", "email": "balbir@linux.vnet.ibm.com", "time": "Wed Jan 07 18:08:03 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: memory cgroup hierarchy documentation\n\nDocumentation updates for hierarchy support\n\nSigned-off-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nCc: YAMAMOTO Takashi \u003cyamamoto@valinux.co.jp\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: David Rientjes \u003crientjes@google.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Dhaval Giani \u003cdhaval@linux.vnet.ibm.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f8d665422603ee1b8ed04dcad4242f14d623c941", "tree": "d872a12113998ed99ce22247091c481b9f465faa", "parents": [ "08e552c69c6930d64722de3ec18c51844d06ee28" ], "author": { "name": "Hirokazu Takahashi", "email": "taka@valinux.co.jp", "time": "Wed Jan 07 18:08:02 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: add mem_cgroup_disabled()\n\nWe check mem_cgroup is disabled or not by checking\nmem_cgroup_subsys.disabled. I think it has more references than expected,\nnow.\n\nreplacing\n if (mem_cgroup_subsys.disabled)\nwith\n if (mem_cgroup_disabled())\n\ngive us good look, I think.\n\n[kamezawa.hiroyu@jp.fujitsu.com: fix typo]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "08e552c69c6930d64722de3ec18c51844d06ee28", "tree": "a744d57ed4b23401115f1033dcaac9e85d550e09", "parents": [ "8c7c6e34a1256a5082d38c8e9bd1474476912715" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:01 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: synchronized LRU\n\nA big patch for changing memcg\u0027s LRU semantics.\n\nNow,\n - page_cgroup is linked to mem_cgroup\u0027s its own LRU (per zone).\n\n - LRU of page_cgroup is not synchronous with global LRU.\n\n - page and page_cgroup is one-to-one and statically allocated.\n\n - To find page_cgroup is on what LRU, you have to check pc-\u003emem_cgroup as\n - lru \u003d page_cgroup_zoneinfo(pc, nid_of_pc, zid_of_pc);\n\n - SwapCache is handled.\n\nAnd, when we handle LRU list of page_cgroup, we do following.\n\n\tpc \u003d lookup_page_cgroup(page);\n\tlock_page_cgroup(pc); .....................(1)\n\tmz \u003d page_cgroup_zoneinfo(pc);\n\tspin_lock(\u0026mz-\u003elru_lock);\n\t.....add to LRU\n\tspin_unlock(\u0026mz-\u003elru_lock);\n\tunlock_page_cgroup(pc);\n\nBut (1) is spin_lock and we have to be afraid of dead-lock with zone-\u003elru_lock.\nSo, trylock() is used at (1), now. Without (1), we can\u0027t trust \"mz\" is correct.\n\nThis is a trial to remove this dirty nesting of locks.\nThis patch changes mz-\u003elru_lock to be zone-\u003elru_lock.\nThen, above sequence will be written as\n\n spin_lock(\u0026zone-\u003elru_lock); # in vmscan.c or swap.c via global LRU\n\tmem_cgroup_add/remove/etc_lru() {\n\t\tpc \u003d lookup_page_cgroup(page);\n\t\tmz \u003d page_cgroup_zoneinfo(pc);\n\t\tif (PageCgroupUsed(pc)) {\n\t\t\t....add to LRU\n\t\t}\n spin_lock(\u0026zone-\u003elru_lock); # in vmscan.c or swap.c via global LRU\n\nThis is much simpler.\n(*) We\u0027re safe even if we don\u0027t take lock_page_cgroup(pc). Because..\n 1. When pc-\u003emem_cgroup can be modified.\n - at charge.\n - at account_move().\n 2. at charge\n the PCG_USED bit is not set before pc-\u003emem_cgroup is fixed.\n 3. at account_move()\n the page is isolated and not on LRU.\n\nPros.\n - easy for maintenance.\n - memcg can make use of laziness of pagevec.\n - we don\u0027t have to duplicated LRU/Active/Unevictable bit in page_cgroup.\n - LRU status of memcg will be synchronized with global LRU\u0027s one.\n - # of locks are reduced.\n - account_move() is simplified very much.\nCons.\n - may increase cost of LRU rotation.\n (no impact if memcg is not configured.)\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8c7c6e34a1256a5082d38c8e9bd1474476912715", "tree": "09f53c7c4bac5532a9ecbdadb4450702c744ea6f", "parents": [ "27a7faa0779dd13729196c1a818c294f44bbd1ee" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:08:00 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: mem+swap controller core\n\nThis patch implements per cgroup limit for usage of memory+swap. However\nthere are SwapCache, double counting of swap-cache and swap-entry is\navoided.\n\nMem+Swap controller works as following.\n - memory usage is limited by memory.limit_in_bytes.\n - memory + swap usage is limited by memory.memsw_limit_in_bytes.\n\nThis has following benefits.\n - A user can limit total resource usage of mem+swap.\n\n Without this, because memory resource controller doesn\u0027t take care of\n usage of swap, a process can exhaust all the swap (by memory leak.)\n We can avoid this case.\n\n And Swap is shared resource but it cannot be reclaimed (goes back to memory)\n until it\u0027s used. This characteristic can be trouble when the memory\n is divided into some parts by cpuset or memcg.\n Assume group A and group B.\n After some application executes, the system can be..\n\n Group A -- very large free memory space but occupy 99% of swap.\n Group B -- under memory shortage but cannot use swap...it\u0027s nearly full.\n\n Ability to set appropriate swap limit for each group is required.\n\nMaybe someone wonder \"why not swap but mem+swap ?\"\n\n - The global LRU(kswapd) can swap out arbitrary pages. Swap-out means\n to move account from memory to swap...there is no change in usage of\n mem+swap.\n\n In other words, when we want to limit the usage of swap without affecting\n global LRU, mem+swap limit is better than just limiting swap.\n\nAccounting target information is stored in swap_cgroup which is\nper swap entry record.\n\nCharge is done as following.\n map\n - charge page and memsw.\n\n unmap\n - uncharge page/memsw if not SwapCache.\n\n swap-out (__delete_from_swap_cache)\n - uncharge page\n - record mem_cgroup information to swap_cgroup.\n\n swap-in (do_swap_page)\n - charged as page and memsw.\n record in swap_cgroup is cleared.\n memsw accounting is decremented.\n\n swap-free (swap_free())\n - if swap entry is freed, memsw is uncharged by PAGE_SIZE.\n\nThere are people work under never-swap environments and consider swap as\nsomething bad. For such people, this mem+swap controller extension is just an\noverhead. This overhead is avoided by config or boot option.\n(see Kconfig. detail is not in this patch.)\n\nTODO:\n - maybe more optimization can be don in swap-in path. (but not very safe.)\n But we just do simple accounting at this stage.\n\n[nishimura@mxp.nes.nec.co.jp: make resize limit hold mutex]\n[hugh@veritas.com: memswap controller core swapcache fixes]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "27a7faa0779dd13729196c1a818c294f44bbd1ee", "tree": "30837689bf39eb734a8917f2c912e1b8ac0c28c0", "parents": [ "c077719be8e9e6b55702117513d1b5f41d80404a" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:58 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: swap cgroup for remembering usage\n\nFor accounting swap, we need a record per swap entry, at least.\n\nThis patch adds following function.\n - swap_cgroup_swapon() .... called from swapon\n - swap_cgroup_swapoff() ... called at the end of swapoff.\n\n - swap_cgroup_record() .... record information of swap entry.\n - swap_cgroup_lookup() .... lookup information of swap entry.\n\nThis patch just implements \"how to record information\". No actual method\nfor limit the usage of swap. These routine uses flat table to record and\nlookup. \"wise\" lookup system like radix-tree requires requires memory\nallocation at new records but swap-out is usually called under memory\nshortage (or memcg hits limit.) So, I used static allocation. (maybe\ndynamic allocation is not very hard but it adds additional memory\nallocation in memory shortage path.)\n\nNote1: In this, we use pointer to record information and this means\n 8bytes per swap entry. I think we can reduce this when we\n create \"id of cgroup\" in the range of 0-65535 or 0-255.\n\nReported-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nTested-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nReported-by: Hugh Dickins \u003chugh@veritas.com\u003e\nReported-by: Balbir Singh \u003cbalbir@linux.vnet.ibm.com\u003e\nReported-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelianov \u003cxemul@openvz.org\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c077719be8e9e6b55702117513d1b5f41d80404a", "tree": "3369f02d87390a40f5867d0482972bac506424a8", "parents": [ "d13d144309d2e5a3e6ad978b16c1d0226ddc9231" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:57 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: mem+swap controller Kconfig\n\nConfig and control variable for mem+swap controller.\n\nThis patch adds CONFIG_CGROUP_MEM_RES_CTLR_SWAP\n(memory resource controller swap extension.)\n\nFor accounting swap, it\u0027s obvious that we have to use additional memory to\nremember \"who uses swap\". This adds more overhead. So, it\u0027s better to\noffer \"choice\" to users. This patch adds 2 choices.\n\nThis patch adds 2 parameters to enable swap extension or not.\n - CONFIG\n - boot option\n\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d13d144309d2e5a3e6ad978b16c1d0226ddc9231", "tree": "37c19902b527823956db969d9428737081b2a94d", "parents": [ "c1e862c1f5ad34771b6d0a528cf681e0dcad7c86" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:56 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:05 2009 -0800" }, "message": "memcg: handle swap caches\n\nSwapCache support for memory resource controller (memcg)\n\nBefore mem+swap controller, memcg itself should handle SwapCache in proper\nway. This is cut-out from it.\n\nIn current memcg, SwapCache is just leaked and the user can create tons of\nSwapCache. This is a leak of account and should be handled.\n\nSwapCache accounting is done as following.\n\n charge (anon)\n\t- charged when it\u0027s mapped.\n\t (because of readahead, charge at add_to_swap_cache() is not sane)\n uncharge (anon)\n\t- uncharged when it\u0027s dropped from swapcache and fully unmapped.\n\t means it\u0027s not uncharged at unmap.\n\t Note: delete from swap cache at swap-in is done after rmap information\n\t is established.\n charge (shmem)\n\t- charged at swap-in. this prevents charge at add_to_page_cache().\n\n uncharge (shmem)\n\t- uncharged when it\u0027s dropped from swapcache and not on shmem\u0027s\n\t radix-tree.\n\n at migration, check against \u0027old page\u0027 is modified to handle shmem.\n\nComparing to the old version discussed (and caused troubles), we have\nadvantages of\n - PCG_USED bit.\n - simple migrating handling.\n\nSo, situation is much easier than several months ago, maybe.\n\n[hugh@veritas.com: memcg: handle swap caches build fix]\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nTested-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c1e862c1f5ad34771b6d0a528cf681e0dcad7c86", "tree": "e3ac7ca8cfe5ac02b0df83a4aef5f37e59d7d61f", "parents": [ "c8dad2bb6307f5b00f804a686917105206a4d5c9" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:55 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: new force_empty to free pages under group\n\nBy memcg-move-all-accounts-to-parent-at-rmdir.patch, there is no leak of\nmemory usage and force_empty is removed.\n\nThis patch adds \"force_empty\" again, in reasonable manner.\n\nmemory.force_empty file works when\n\n #echo 0 (or some) \u003e memory.force_empty\n and have following function.\n\n 1. only works when there are no task in this cgroup.\n 2. free all page under this cgroup as much as possible.\n 3. page which cannot be freed will be moved up to parent.\n 4. Then, memcg will be empty after above echo returns.\n\nThis is much better behavior than old \"force_empty\" which just forget\nall accounts. This patch also check signal_pending() and above \"echo\"\ncan be stopped by \"Ctrl-C\".\n\n[akpm@linux-foundation.org: cleanup]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c8dad2bb6307f5b00f804a686917105206a4d5c9", "tree": "5f1b7dd1fc4ae5789e35e5d0dade0d37be9fe52e", "parents": [ "f817ed48535ac6510ebae7c4116f24a5f9268834" ], "author": { "name": "Jan Blunck", "email": "jblunck@suse.de", "time": "Wed Jan 07 18:07:53 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: reduce size of mem_cgroup by using nr_cpu_ids\n\nAs Jan Blunck \u003cjblunck@suse.de\u003e pointed out, allocating per-cpu stat for\nmemcg to the size of NR_CPUS is not good.\n\nThis patch changes mem_cgroup\u0027s cpustat allocation not based on NR_CPUS\nbut based on nr_cpu_ids.\n\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f817ed48535ac6510ebae7c4116f24a5f9268834", "tree": "5ce9cc72c1adc0427f7efeefb3bc51b9b392ea09", "parents": [ "0753b0ef3b301895234fed02bea2c099c7ff4feb" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:53 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: move all acccounting to parent at rmdir()\n\nThis patch provides a function to move account information of a page\nbetween mem_cgroups and rewrite force_empty to make use of this.\n\nThis moving of page_cgroup is done under\n - lru_lock of source/destination mem_cgroup is held.\n - lock_page_cgroup() is held.\n\nThen, a routine which touches pc-\u003emem_cgroup without lock_page_cgroup()\nshould confirm pc-\u003emem_cgroup is still valid or not. Typical code can be\nfollowing.\n\n(while page is not under lock_page())\n\tmem \u003d pc-\u003emem_cgroup;\n\tmz \u003d page_cgroup_zoneinfo(pc)\n\tspin_lock_irqsave(\u0026mz-\u003elru_lock);\n\tif (pc-\u003emem_cgroup \u003d\u003d mem)\n\t\t...../* some list handling */\n\tspin_unlock_irqrestore(\u0026mz-\u003elru_lock);\n\nOf course, better way is\n\tlock_page_cgroup(pc);\n\t....\n\tunlock_page_cgroup(pc);\n\nBut you should confirm the nest of lock and avoid deadlock.\n\nIf you treats page_cgroup from mem_cgroup\u0027s LRU under mz-\u003elru_lock,\nyou don\u0027t have to worry about what pc-\u003emem_cgroup points to.\nmoved pages are added to head of lru, not to tail.\n\nExpected users of this routine is:\n - force_empty (rmdir)\n - moving tasks between cgroup (for moving account information.)\n - hierarchy (maybe useful.)\n\nforce_empty(rmdir) uses this move_account and move pages to its parent.\nThis \"move\" will not cause OOM (I added \"oom\" parameter to try_charge().)\n\nIf the parent is busy (not enough memory), force_empty calls try_to_free_page()\nand reduce usage.\n\nPurpose of this behavior is\n - Fix \"forget all\" behavior of force_empty and avoid leak of accounting.\n - By \"moving first, free if necessary\", keep pages on memory as much as\n possible.\n\nAdding a switch to change behavior of force_empty to\n - free first, move if necessary\n - free all, if there is mlocked/busy pages, return -EBUSY.\nis under consideration. (I\u0027ll add if someone requtests.)\n\nThis patch also removes memory.force_empty file, a brutal debug-only interface.\n\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nTested-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0753b0ef3b301895234fed02bea2c099c7ff4feb", "tree": "35d01368e76d0e5ad21b38fc80274154f8a35d62", "parents": [ "01b1ae63c2270cbacfd43fea94578c17950eb548" ], "author": { "name": "Fernando Luis Vazquez Cao", "email": "fernando@oss.ntt.co.jp", "time": "Wed Jan 07 18:07:51 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: do not recalculate section unnecessarily in init_section_page_cgroup\n\nIn init_section_page_cgroup() the section a given pfn belongs to is\ncalculated at the top of the function and, despite the fact that the\npfn/section correspondence does not change, it is recalculated further\ndown the same function. By computing this just once and reusing that\nvalue we save some bytes in the object file and do not waste CPU cycles.\n\nSigned-off-by: Fernando Luis Vazquez Cao \u003cfernando@oss.ntt.co.jp\u003e\nReviewed-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "01b1ae63c2270cbacfd43fea94578c17950eb548", "tree": "ab0275f32e8548c4413014d43cab1f52f03c9c5c", "parents": [ "bced0520fe462bb94021dcabd32e99630c171be2" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:50 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: simple migration handling\n\nNow, management of \"charge\" under page migration is done under following\nmanner. (Assume migrate page contents from oldpage to newpage)\n\n before\n - \"newpage\" is charged before migration.\n at success.\n - \"oldpage\" is uncharged at somewhere(unmap, radix-tree-replace)\n at failure\n - \"newpage\" is uncharged.\n - \"oldpage\" is charged if necessary (*1)\n\nBut (*1) is not reliable....because of GFP_ATOMIC.\n\nThis patch tries to change behavior as following by charge/commit/cancel ops.\n\n before\n - charge PAGE_SIZE (no target page)\n success\n - commit charge against \"newpage\".\n failure\n - commit charge against \"oldpage\".\n (PCG_USED bit works effectively to avoid double-counting)\n - if \"oldpage\" is obsolete, cancel charge of PAGE_SIZE.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "bced0520fe462bb94021dcabd32e99630c171be2", "tree": "6fa234f4a25bc8231742aea13e7cc2664b0a69a6", "parents": [ "7a81b88cb53e335ff7d019e6398c95792c817d93" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:49 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: fix gfp_mask of callers of charge\n\nFix misuse of gfp_kernel.\n\nNow, most of callers of mem_cgroup_charge_xxx functions uses GFP_KERNEL.\n\nI think that this is from the fact that page_cgroup *was* dynamically\nallocated.\n\nBut now, we allocate all page_cgroup at boot. And\nmem_cgroup_try_to_free_pages() reclaim memory from GFP_HIGHUSER_MOVABLE +\nspecified GFP_RECLAIM_MASK.\n\n * This is because we just want to reduce memory usage.\n \"Where we should reclaim from ?\" is not a problem in memcg.\n\nThis patch modifies gfp masks to be GFP_HIGUSER_MOVABLE if possible.\n\nNote: This patch is not for fixing behavior but for showing sane information\n in source code.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7a81b88cb53e335ff7d019e6398c95792c817d93", "tree": "6ebca4d509a541ac707e10f9369916549e90c0ad", "parents": [ "0b82ac37b889ec881b645860da3775118effb3ca" ], "author": { "name": "KAMEZAWA Hiroyuki", "email": "kamezawa.hiroyu@jp.fujitsu.com", "time": "Wed Jan 07 18:07:48 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:04 2009 -0800" }, "message": "memcg: introduce charge-commit-cancel style of functions\n\nThere is a small race in do_swap_page(). When the page swapped-in is\ncharged, the mapcount can be greater than 0. But, at the same time some\nprocess (shares it ) call unmap and make mapcount 1-\u003e0 and the page is\nuncharged.\n\n CPUA \t\t\tCPUB\n mapcount \u003d\u003d 1.\n (1) charge if mapcount\u003d\u003d0 zap_pte_range()\n (2) mapcount 1 \u003d\u003e 0.\n\t\t\t (3) uncharge(). (success)\n (4) set page\u0027s rmap()\n mapcount 0\u003d\u003e1\n\nThen, this swap page\u0027s account is leaked.\n\nFor fixing this, I added a new interface.\n - charge\n account to res_counter by PAGE_SIZE and try to free pages if necessary.\n - commit\n register page_cgroup and add to LRU if necessary.\n - cancel\n uncharge PAGE_SIZE because of do_swap_page failure.\n\n CPUA\n (1) charge (always)\n (2) set page\u0027s rmap (mapcount \u003e 0)\n (3) commit charge was necessary or not after set_pte().\n\nThis protocol uses PCG_USED bit on page_cgroup for avoiding over accounting.\nUsual mem_cgroup_charge_common() does charge -\u003e commit at a time.\n\nAnd this patch also adds following function to clarify all charges.\n\n - mem_cgroup_newpage_charge() ....replacement for mem_cgroup_charge()\n\tcalled against newly allocated anon pages.\n\n - mem_cgroup_charge_migrate_fixup()\n called only from remove_migration_ptes().\n\twe\u0027ll have to rewrite this later.(this patch just keeps old behavior)\n\tThis function will be removed by additional patch to make migration\n\tclearer.\n\nGood for clarifying \"what we do\"\n\nThen, we have 4 following charge points.\n - newpage\n - swap-in\n - add-to-cache.\n - migration.\n\n[akpm@linux-foundation.org: add missing inline directives to stubs]\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nReviewed-by: Daisuke Nishimura \u003cnishimura@mxp.nes.nec.co.jp\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0b82ac37b889ec881b645860da3775118effb3ca", "tree": "93407311725ac2588df5f37e261304a51064e200", "parents": [ "116e05751285c20edf5768ca3bcc00dad86181bb" ], "author": { "name": "Serge E. Hallyn", "email": "serue@us.ibm.com", "time": "Wed Jan 07 18:07:46 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "devices cgroup: allow mkfifo\n\nThe devcgroup_inode_permission() hook in the devices whitelist cgroup has\nalways bypassed access checks on fifos. But the mknod hook did not. The\ndevices whitelist is only about block and char devices, and fifos can\u0027t\neven be added to the whitelist, so fifos can\u0027t be created at all except by\ntasks which have \u0027a\u0027 in their whitelist (meaning they have access to all\ndevices).\n\nFix the behavior by bypassing access checks to mkfifo.\n\nSigned-off-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: KOSAKI Motohiro \u003ckosaki.motohiro@jp.fujitsu.com\u003e\nCc: James Morris \u003cjmorris@namei.org\u003e\nReported-by: Daniel Lezcano \u003cdlezcano@fr.ibm.com\u003e\nCc: \u003cstable@kernel.org\u003e\t\t[2.6.27.x]\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "116e05751285c20edf5768ca3bcc00dad86181bb", "tree": "a95c51476e30fb1374dc50d6051c7216f23afa2f", "parents": [ "a47295e6bc42ad35f9c15ac66f598aa24debd4e2" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Wed Jan 07 18:07:45 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "devcgroup: use list_for_each_entry_rcu()\n\nWe should use list_for_each_entry_rcu in RCU read site.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a47295e6bc42ad35f9c15ac66f598aa24debd4e2", "tree": "cb765e996ef35ae88e29d60796655d0d35e8cf5e", "parents": [ "e7b80bb695a5b64c92e314838e083b2f3bdf29b2" ], "author": { "name": "Paul Menage", "email": "menage@google.com", "time": "Wed Jan 07 18:07:44 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "cgroups: make cgroup_path() RCU-safe\n\nFix races between /proc/sched_debug by freeing cgroup objects via an RCU\ncallback. Thus any cgroup reference obtained from an RCU-safe source will\nremain valid during the RCU section. Since dentries are also RCU-safe,\nthis allows us to traverse up the tree safely.\n\nAdditionally, make cgroup_path() check for a NULL cgrp-\u003edentry to avoid\ntrying to report a path for a partially-created cgroup.\n\n[lizf@cn.fujitsu.com: call deactive_super() in cgroup_diput()]\nSigned-off-by: Paul Menage \u003cmenage@google.com\u003e\nReviewed-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nTested-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e7b80bb695a5b64c92e314838e083b2f3bdf29b2", "tree": "f5eafb9825a23550dbf903e5cabd71655e4e55ce", "parents": [ "c12f65d4396e05c51ce3af7f159ead98574a587c" ], "author": { "name": "Gowrishankar M", "email": "gowrishankar.m@in.ibm.com", "time": "Wed Jan 07 18:07:43 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "cgroups: skip processes from other namespaces when listing a cgroup\n\nOnce tasks are populated from system namespace inside cgroup, container\nreplaces other namespace task with 0 while listing tasks, inside\ncontainer.\n\nThough this is expected behaviour from container end, there is no use of\nshowing unwanted 0s.\n\nIn this patch, we check if a process is in same namespace before loading\ninto pid array.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Gowrishankar M \u003cgowrishankar.m@in.ibm.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c12f65d4396e05c51ce3af7f159ead98574a587c", "tree": "95e4f2e4878101ca2b9e3efc0a9cc5f25ce678d7", "parents": [ "33a68ac1c1b695216e873ee12e819adbe73e4d9f" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:07:42 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "cgroups: introduce link_css_set() to remove duplicate code\n\nAdd a common function link_css_set() to link a css_set to a cgroup.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "33a68ac1c1b695216e873ee12e819adbe73e4d9f", "tree": "0c58e50e7c528200390f740265f7eb7e7a3a87e6", "parents": [ "e5f6a8609bab0c2d7543ab1505105e011832afd7" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:07:42 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "cgroups: add inactive subsystems to rootnode.subsys_list\n\nThough for an inactive hierarchy, we have subsys-\u003eroot \u003d\u003d \u0026rootnode, but\nrootnode\u0027s subsys_list is always empty.\n\nThis conflicts with the code in find_css_set():\n\n\tfor (i \u003d 0; i \u003c CGROUP_SUBSYS_COUNT; i++) {\n\t\t...\n\t\tif (ss-\u003eroot-\u003esubsys_list.next \u003d\u003d \u0026ss-\u003esibling) {\n\t\t\t...\n\t\t}\n\t}\n\tif (list_empty(\u0026rootnode.subsys_list)) {\n\t\t...\n\t}\n\nThe above code assumes rootnode.subsys_list links all inactive\nhierarchies.\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "e5f6a8609bab0c2d7543ab1505105e011832afd7", "tree": "07591b1fb27431cee41ea4ca097b514a0e773ba7", "parents": [ "7534432dcc3c654a8671b6b0cdffd1dbdbc73074" ], "author": { "name": "Li Zefan", "email": "lizf@cn.fujitsu.com", "time": "Wed Jan 07 18:07:41 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "cgroups: make root_list contains active hierarchies only\n\nDon\u0027t link rootnode to the root list, so root_list contains active\nhierarchies only as the comment indicates. And rename for_each_root() to\nfor_each_active_root().\n\nAlso remove redundant check in cgroup_kill_sb().\n\nSigned-off-by: Li Zefan \u003clizf@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7534432dcc3c654a8671b6b0cdffd1dbdbc73074", "tree": "65a5010c8bc5062d004fd1ede32e8f7ba64f6eec", "parents": [ "77efecd9e0526327548152df715ab8644ecb5ba0" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Wed Jan 07 18:07:40 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:03 2009 -0800" }, "message": "cgroups: remove rcu_read_lock() in cgroupstats_build()\n\ncgroup_iter_* do not need rcu_read_lock().\n\nIn cgroup_enable_task_cg_lists(), do_each_thread() and while_each_thread()\nare protected by RCU, it\u0027s OK, for write_lock(\u0026css_set_lock) implies\nrcu_read_lock() in non-RT kernel.\n\nIf we need explicit rcu_read_lock(), we should add rcu_read_lock() in\ncgroup_enable_task_cg_lists(), not cgroup_iter_*.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "77efecd9e0526327548152df715ab8644ecb5ba0", "tree": "4dd2a82fe5db454fb018e434e07c3e6f30dc9832", "parents": [ "104cbd55377029e70fc2cee01089e84b9c36e5dc" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Wed Jan 07 18:07:39 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:02 2009 -0800" }, "message": "cgroups: call find_css_set() safely in cgroup_attach_task()\n\nIn cgroup_attach_task(), tsk maybe exit when we call find_css_set(). and\nfind_css_set() will access to invalid css_set.\n\nThis patch increases the count before get_css_set(), and decreases it\nafter find_css_set().\n\nNOTE:\n\ncss_set\u0027s refcount is also taskcount, after this patch applied, taskcount\nmay be off-by-one WHEN cgroup_lock() is not held. but I reviewed other\ncode which use taskcount, they are still correct. No regression found by\nreviewing and simply testing.\n\nSo I do not use two counters in css_set. (one counter for taskcount, the\nother for refcount. like struct mm_struct) If this fix cause regression,\nwe will use two counters in css_set.\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nCc: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "104cbd55377029e70fc2cee01089e84b9c36e5dc", "tree": "60c7d0d9625b74f6a2733a9618cc97dc772848f5", "parents": [ "b2aa30f7bb381e04c93eed106089ba55553955f1" ], "author": { "name": "Lai Jiangshan", "email": "laijs@cn.fujitsu.com", "time": "Wed Jan 07 18:07:38 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jan 08 08:31:02 2009 -0800" }, "message": "cgroups: use task_lock() for access tsk-\u003ecgroups safe in cgroup_clone()\n\nUse task_lock() protect tsk-\u003ecgroups and get_css_set(tsk-\u003ecgroups).\n\nSigned-off-by: Lai Jiangshan \u003claijs@cn.fujitsu.com\u003e\nAcked-by: Paul Menage \u003cmenage@google.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Pavel Emelyanov \u003cxemul@openvz.org\u003e\nCc: Balbir Singh \u003cbalbir@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ], "next": "b2aa30f7bb381e04c93eed106089ba55553955f1" }