)]}'
{
  "log": [
    {
      "commit": "18bb1db3e7607e4a997d50991a6f9fa5b0f8722c",
      "tree": "4ee4e584bc9a67f3ec14ce159d2d7d4a27e68d4a",
      "parents": [
        "8208a22bb8bd3c52ef634b4ff194f14892ab1713"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jul 26 01:41:39 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 03 22:54:53 2012 -0500"
      },
      "message": "switch vfs_mkdir() and -\u003emkdir() to umode_t\n\nvfs_mkdir() gets int, but immediately drops everything that might not\nfit into umode_t and that\u0027s the only caller of -\u003emkdir()...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "c7427d23f7ed695ac226dbe3a84d7f19091d34ce",
      "tree": "dcd94331ca00aebe203710be18c1171c7f935ec3",
      "parents": [
        "3cebde2413ba42504cf2c10ec1d47582912435cd"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon May 30 01:50:53 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon May 30 01:50:53 2011 -0400"
      },
      "message": "autofs4: bogus dentry_unhash() added in -\u003eunlink()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "79bf7c732b5ff75b96022ed9d29181afd3d2509c",
      "tree": "74b8cc690f9a37fff02d0685464e1c695a25ef94",
      "parents": [
        "64252c75a2196a0cf1e0d3777143ecfe0e3ae650"
      ],
      "author": {
        "name": "Sage Weil",
        "email": "sage@newdream.net",
        "time": "Tue May 24 13:06:06 2011 -0700"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu May 26 07:26:47 2011 -0400"
      },
      "message": "vfs: push dentry_unhash on rmdir into file systems\n\nOnly a few file systems need this.  Start by pushing it down into each\nfs rmdir method (except gfs2 and xfs) so it can be dealt with on a per-fs\nbasis.\n\nThis does not change behavior for any in-tree file systems.\n\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Sage Weil \u003csage@newdream.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "25985edcedea6396277003854657b5f3cb31a628",
      "tree": "f026e810210a2ee7290caeb737c23cb6472b7c38",
      "parents": [
        "6aba74f2791287ec407e0f92487a725a25908067"
      ],
      "author": {
        "name": "Lucas De Marchi",
        "email": "lucas.demarchi@profusion.mobi",
        "time": "Wed Mar 30 22:57:33 2011 -0300"
      },
      "committer": {
        "name": "Lucas De Marchi",
        "email": "lucas.demarchi@profusion.mobi",
        "time": "Thu Mar 31 11:26:23 2011 -0300"
      },
      "message": "Fix common misspellings\n\nFixes generated by \u0027codespell\u0027 and manually reviewed.\n\nSigned-off-by: Lucas De Marchi \u003clucas.demarchi@profusion.mobi\u003e\n"
    },
    {
      "commit": "e7854723d0f3626f260c880d8db8e5136f29db19",
      "tree": "3fe4f138922f51d8214ccc6bd2fb9ed4dfa1f234",
      "parents": [
        "83fb96bfc792e5ca693e53f7fd878d51b8493da8"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Mar 25 01:51:31 2011 +0800"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Mar 24 14:54:35 2011 -0400"
      },
      "message": "autofs4 - remove autofs4_lock\n\nThe autofs4_lock introduced by the rcu-walk changes has unnecessarily\nbroad scope. The locking is better handled by the per-autofs super\nblock lookup_lock.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nAcked-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "83fb96bfc792e5ca693e53f7fd878d51b8493da8",
      "tree": "315b3d418e9e4cf046195a6fbe12e9e9537d54ee",
      "parents": [
        "d4a85e35d1465da055264407d8395e84483084e6"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Mar 25 01:51:25 2011 +0800"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Mar 24 14:54:34 2011 -0400"
      },
      "message": "autofs4 - fix d_manage() return on rcu-walk\n\nThe daemon never needs to block and, in the rcu-walk case an error\nreturn isn\u0027t used, so always return zero.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "3c3199852905ceb90a70e98777e71d369a5f0823",
      "tree": "aec40f3721955394587fc4ad364606161bc98cc5",
      "parents": [
        "62a7375e5d77d654695297c4b39d5d740d901184"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Mar 25 01:51:08 2011 +0800"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Mar 24 14:54:34 2011 -0400"
      },
      "message": "autofs4 - reinstate last used update on access\n\nWhen direct (and offset) mounts were introduced the the last used\ntimeout could no longer be updated in -\u003ed_revalidate(). This is\nbecause covered direct mounts would be followed over without calling\nthe autofs file system. As a result the definition of the busyness\ncheck for all entries was changed to be \"actually busy\" being an open\nfile or working directory within the automount. But now we have a call\nback in the follow so the last used update on any access can be\nre-instated. This requires DCACHE_MANAGE_TRANSIT to always be set.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "1aed3e4204dd787d53b3cd6363eb63bb4900c38e",
      "tree": "503582fa9f7fa68a1da7af3770d3a627d041fb52",
      "parents": [
        "7cc90cc3ffe22a0d81b8d605b20a82ec7911012d"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri Mar 18 09:09:02 2011 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri Mar 18 10:01:59 2011 -0400"
      },
      "message": "lose \u0027mounting_here\u0027 argument in -\u003ed_manage()\n\nit\u0027s always false...\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "b89b12b46211d971d75e5ca8249817bc9e11c453",
      "tree": "3b846ec3daa6ce9e301668121b8c335b0d879470",
      "parents": [
        "26e6c910670171410577c7df2aebe94cef76e150"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 16 21:42:32 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:29 2011 -0500"
      },
      "message": "autofs4: clean -\u003ed_release() and autofs4_free_ino() up\n\nThe latter is called only when both ino and dentry are about to\nbe freed, so cleaning -\u003ed_fsdata and -\u003edentry is pointless.\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "26e6c910670171410577c7df2aebe94cef76e150",
      "tree": "407ecb012b91efce80be76f0191b2efc43689b7f",
      "parents": [
        "5a37db302e698a83209eff22ca8f3fd05eb1d84b"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 16 18:43:40 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:28 2011 -0500"
      },
      "message": "autofs4: split autofs4_init_ino()\n\nsplit init_ino into new_ino and clean_ino; the former is\nwhat used to be init_ino(NULL, sbi), the latter is for cases\nwhere we passed non-NULL ino.  Lose unused arguments.\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "5a37db302e698a83209eff22ca8f3fd05eb1d84b",
      "tree": "0ffef4412676c8b1814a2965b150168fcb9cfb03",
      "parents": [
        "726a5e0688fd344110d8f2979d87f243a4ba1a48"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 16 18:29:35 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:28 2011 -0500"
      },
      "message": "autofs4: mkdir and symlink always get a dentry that had passed lookup\n\n... so -\u003ed_fsdata will have been set up before we get there\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "726a5e0688fd344110d8f2979d87f243a4ba1a48",
      "tree": "c554b40ff5619dfd491b4890e89c8ee9c3131efd",
      "parents": [
        "0bf71d4d005176f6b6587ba64a377f9798213f21"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 16 17:43:52 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:28 2011 -0500"
      },
      "message": "autofs4: autofs4_get_inode() doesn\u0027t need autofs_info * argument anymore\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "0bf71d4d005176f6b6587ba64a377f9798213f21",
      "tree": "4814d73e0201e92e7aca19b0a45f64b9a9644698",
      "parents": [
        "09f12c03fa699ce7d030c47add60577138927d4f"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 16 17:39:15 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:28 2011 -0500"
      },
      "message": "autofs4: kill -\u003esize in autofs_info\n\nIt\u0027s used only to pass the length of symlink body to\nautofs4_get_inode() in autofs4_dir_symlink().  We can\nbloody well set inode-\u003ei_size in autofs4_dir_symlink()\ndirectly and be done with that.\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "09f12c03fa699ce7d030c47add60577138927d4f",
      "tree": "b9ef52e197a38579799ba9b62f78bf0c35efa4cc",
      "parents": [
        "14a2f00bde7668fe18d1c8355d26c7c96961e1f7"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Jan 16 17:20:23 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:27 2011 -0500"
      },
      "message": "autofs4: pass mode to autofs4_get_inode() explicitly\n\nIn all cases we\u0027d set inf-\u003emode to know value just before\npassing it to autofs4_get_inode().  That kills the need\nto store it in autofs_info and pass it to autofs_init_ino()\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "292c5ee802e9b969b84ee671a5e3001d94230f5b",
      "tree": "616b0a583d17c50aedbb87082943248333d63c2b",
      "parents": [
        "c0bcc9d55252012805300ca01b9b7a143b4daf85"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Jan 17 00:47:38 2011 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:27 2011 -0500"
      },
      "message": "autofs4: keep symlink body in inode-\u003ei_private\n\ngets rid of all -\u003efree()/-\u003eu.symlink machinery in autofs; we simply\nkeep symlink bodies in inode-\u003ei_private and free them in -\u003eevict_inode().\n\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "c0bcc9d55252012805300ca01b9b7a143b4daf85",
      "tree": "af83d0afe51156377032608242ae24ee0c24e860",
      "parents": [
        "8931221411f9ff950de8fd686dc5ab881394cb9a"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Jan 18 12:06:15 2011 +0800"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Tue Jan 18 01:21:27 2011 -0500"
      },
      "message": "autofs4 - fix debug print in autofs4_lookup()\n\noz_mode isn\u0027t defined any more, use autofs4_oz_mode(sbi) instead.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "b650c858c26bd9ba29ebc82d30f09355845a294a",
      "tree": "cd3749a722a81425263e3a2b1d82898586665acf",
      "parents": [
        "ea5b778a8b98c85a87d66bf844904f9c3802b869"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Sat Jan 15 10:51:57 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:49 2011 -0500"
      },
      "message": "autofs4: Merge the remaining dentry ops tables\n\nMerge the remaining autofs4 dentry ops tables.  It doesn\u0027t matter if\nd_automount and d_manage are present on something that\u0027s not mountable or\nholdable as these ops are only used if the appropriate flags are set in\ndentry-\u003ed_flags.\n\n[AV] switch to -\u003es_d_op, since now _everything_ on autofs4 is using the\nsame dentry_operations.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "ab90911ff90cdab59b31c045c3f0ae480d14f29d",
      "tree": "683450a66eb9dc6bf053e38d63f4740bb53a7b6e",
      "parents": [
        "87556ef19926e97464e0163a7840140527ae6615"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Jan 14 18:46:51 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:47 2011 -0500"
      },
      "message": "Allow d_manage() to be used in RCU-walk mode\n\nAllow d_manage() to be called from pathwalk when it is in RCU-walk mode as well\nas when it is in Ref-walk mode.  This permits __follow_mount_rcu() to call\nd_manage() directly.  d_manage() needs a parameter to indicate that it is in\nRCU-walk mode as it isn\u0027t allowed to sleep if in that mode (but should return\n-ECHILD instead).\n\nautofs4_d_manage() can then be set to retain RCU-walk mode if the daemon\naccesses it and otherwise request dropping back to ref-walk mode.\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "dd89f90d2deb9aa5bc8e1b15d726ff5c0bb2b623",
      "tree": "0f3d8c9c66be46215cc5b10d51ccb25cc8e68da1",
      "parents": [
        "9e3fea16ba386fa549a0b2de8a203e5d412997a0"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:46:35 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:44 2011 -0500"
      },
      "message": "autofs4: Add v4 pseudo direct mount support\n\nVersion 4 of autofs provides a pseudo direct mount implementation\nthat relies on directories at the leaves of a directory tree under\nan indirect mount to trigger mounts.\n\nThis patch adds support for that functionality.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "6651149371b842715906311b4631b8489cebf7e8",
      "tree": "4ad6941a353515edaada23426ec3b44724f40ca3",
      "parents": [
        "71e469db242c2eeb00faf9caf7d9e00150c00a6e"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:46:24 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:42 2011 -0500"
      },
      "message": "autofs4: Clean up autofs4_free_ino()\n\nWhen this function is called the local reference count does\u0027t need to\nbe updated since the dentry is going away and dput definitely must\nnot be called here.\n\nAlso the autofs info struct field inode isn\u0027t used so remove it.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "71e469db242c2eeb00faf9caf7d9e00150c00a6e",
      "tree": "8fdb7f6900edca6f2973f9ae64331895112f017e",
      "parents": [
        "e61da20a50d21725ff27571a6dff9468e4fb7146"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:46:19 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:41 2011 -0500"
      },
      "message": "autofs4: Clean up dentry operations\n\nThere are now two distinct dentry operations uses. One for dentrys\nthat trigger mounts and one for dentrys that do not.\n\nRationalize the use of these dentry operations and rename them to\nreflect their function.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "e61da20a50d21725ff27571a6dff9468e4fb7146",
      "tree": "c82ea451647e95754bb27aa46c60fd264ddd7c2c",
      "parents": [
        "8c13a676d5a56495c350f3141824a5ef6c6b4606"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:46:14 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:40 2011 -0500"
      },
      "message": "autofs4: Clean up inode operations\n\nSince the use of -\u003efollow_link() has been eliminated there is no\nneed to separate the indirect and direct inode operations.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "8c13a676d5a56495c350f3141824a5ef6c6b4606",
      "tree": "514ec4ba97eef8d40bbec73b5d3b0c46bb9ee51a",
      "parents": [
        "b5b801779d59165c4ecf1009009109545bd1f642"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:46:08 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:39 2011 -0500"
      },
      "message": "autofs4: Remove unused code\n\nRemove code that is not used due to the use of -\u003ed_automount()\nand -\u003ed_manage().\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "b5b801779d59165c4ecf1009009109545bd1f642",
      "tree": "3a1c8b2e65e72977993ba96c1398edba4c63cbf5",
      "parents": [
        "10584211e48036182212b598cc53331776406d60"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:46:03 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:38 2011 -0500"
      },
      "message": "autofs4: Add d_manage() dentry operation\n\nThis patch required a previous patch to add the -\u003ed_automount()\ndentry operation.\n\nAdd a function to use the newly defined -\u003ed_manage() dentry operation\nfor blocking during mount and expire.\n\nWhether the VFS calls the dentry operations d_automount() and d_manage()\nis controled by the DMANAGED_AUTOMOUNT and DMANAGED_TRANSIT flags. autofs\nuses the d_automount() operation to callback to user space to request\nmount operations and the d_manage() operation to block walks into mounts\nthat are under construction or destruction.\n\nIn order to prevent these functions from being called unnecessarily the\nDMANAGED_* flags are cleared for cases which would cause this. In the\ncommon case the DMANAGED_AUTOMOUNT and DMANAGED_TRANSIT flags are both\nset for dentrys waiting to be mounted. The DMANAGED_TRANSIT flag is\ncleared upon successful mount request completion and set during expire\nruns, both during the dentry expire check, and if selected for expire,\nis left set until a subsequent successful mount request completes.\n\nThe exception to this is the so-called rootless multi-mount which has\nno actual mount at its base. In this case the DMANAGED_AUTOMOUNT flag\nis cleared upon successful mount request completion as well and set\nagain after a successful expire.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "10584211e48036182212b598cc53331776406d60",
      "tree": "b66067b47a1104c3ae3ccd4248c9b41d5b869c5e",
      "parents": [
        "db3729153e82ba3ada89681f26c4f1b6d6807a80"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Jan 14 18:45:58 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:37 2011 -0500"
      },
      "message": "autofs4: Add d_automount() dentry operation\n\nAdd a function to use the newly defined -\u003ed_automount() dentry operation\nfor triggering mounts instead of doing the user space callback in -\u003elookup()\nand -\u003ed_revalidate().\n\nNote, to be useful the subsequent patch to add the -\u003ed_manage() dentry\noperation is also needed so the discussion of functionality is deferred to\nthat patch.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "cc53ce53c86924bfe98a12ea20b7465038a08792",
      "tree": "3c9a4923dd9f413c46bfa83a20cb579446df6deb",
      "parents": [
        "9875cf806403fae66b2410a3c2cc820d97731e04"
      ],
      "author": {
        "name": "David Howells",
        "email": "dhowells@redhat.com",
        "time": "Fri Jan 14 18:45:26 2011 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Jan 15 20:07:31 2011 -0500"
      },
      "message": "Add a dentry op to allow processes to be held during pathwalk transit\n\nAdd a dentry op (d_manage) to permit a filesystem to hold a process and make it\nsleep when it tries to transit away from one of that filesystem\u0027s directories\nduring a pathwalk.  The operation is keyed off a new dentry flag\n(DCACHE_MANAGE_TRANSIT).\n\nThe filesystem is allowed to be selective about which processes it holds and\nwhich it permits to continue on or prohibits from transiting from each flagged\ndirectory.  This will allow autofs to hold up client processes whilst letting\nits userspace daemon through to maintain the directory or the stuff behind it\nor mounted upon it.\n\nThe -\u003ed_manage() dentry operation:\n\n\tint (*d_manage)(struct path *path, bool mounting_here);\n\ntakes a pointer to the directory about to be transited away from and a flag\nindicating whether the transit is undertaken by do_add_mount() or\ndo_move_mount() skipping through a pile of filesystems mounted on a mountpoint.\n\nIt should return 0 if successful and to let the process continue on its way;\n-EISDIR to prohibit the caller from skipping to overmounted filesystems or\nautomounting, and to use this directory; or some other error code to return to\nthe user.\n\n-\u003ed_manage() is called with namespace_sem writelocked if mounting_here is true\nand no other locks held, so it may sleep.  However, if mounting_here is true,\nit may not initiate or wait for a mount or unmount upon the parameter\ndirectory, even if the act is actually performed by userspace.\n\nWithin fs/namei.c, follow_managed() is extended to check with d_manage() first\non each managed directory, before transiting away from it or attempting to\nautomount upon it.\n\nfollow_down() is renamed follow_down_one() and should only be used where the\nfilesystem deliberately intends to avoid management steps (e.g. autofs).\n\nA new follow_down() is added that incorporates the loop done by all other\ncallers of follow_down() (do_add/move_mount(), autofs and NFSD; whilst AFS, NFS\nand CIFS do use it, their use is removed by converting them to use\nd_automount()).  The new follow_down() calls d_manage() as appropriate.  It\nalso takes an extra parameter to indicate if it is being called from mount code\n(with namespace_sem writelocked) which it passes to d_manage().  follow_down()\nignores automount points so that it can be used to mount on them.\n\n__follow_mount_rcu() is made to abort rcu-walk mode if it hits a directory with\nDCACHE_MANAGE_TRANSIT set on the basis that we\u0027re probably going to have to\nsleep.  It would be possible to enter d_manage() in rcu-walk mode too, and have\nthat determine whether to abort or not itself.  That would allow the autofs\ndaemon to continue on in rcu-walk mode.\n\nNote that DCACHE_MANAGE_TRANSIT on a directory should be cleared when it isn\u0027t\nrequired as every tranist from that directory will cause d_manage() to be\ninvoked.  It can always be set again when necessary.\n\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\nWHAT THIS MEANS FOR AUTOFS\n\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\u003d\n\nAutofs currently uses the lookup() inode op and the d_revalidate() dentry op to\ntrigger the automounting of indirect mounts, and both of these can be called\nwith i_mutex held.\n\nautofs knows that the i_mutex will be held by the caller in lookup(), and so\ncan drop it before invoking the daemon - but this isn\u0027t so for d_revalidate(),\nsince the lock is only held on _some_ of the code paths that call it.  This\nmeans that autofs can\u0027t risk dropping i_mutex from its d_revalidate() function\nbefore it calls the daemon.\n\nThe bug could manifest itself as, for example, a process that\u0027s trying to\nvalidate an automount dentry that gets made to wait because that dentry is\nexpired and needs cleaning up:\n\n\tmkdir         S ffffffff8014e05a     0 32580  24956\n\tCall Trace:\n\t [\u003cffffffff885371fd\u003e] :autofs4:autofs4_wait+0x674/0x897\n\t [\u003cffffffff80127f7d\u003e] avc_has_perm+0x46/0x58\n\t [\u003cffffffff8009fdcf\u003e] autoremove_wake_function+0x0/0x2e\n\t [\u003cffffffff88537be6\u003e] :autofs4:autofs4_expire_wait+0x41/0x6b\n\t [\u003cffffffff88535cfc\u003e] :autofs4:autofs4_revalidate+0x91/0x149\n\t [\u003cffffffff80036d96\u003e] __lookup_hash+0xa0/0x12f\n\t [\u003cffffffff80057a2f\u003e] lookup_create+0x46/0x80\n\t [\u003cffffffff800e6e31\u003e] sys_mkdirat+0x56/0xe4\n\nversus the automount daemon which wants to remove that dentry, but can\u0027t\nbecause the normal process is holding the i_mutex lock:\n\n\tautomount     D ffffffff8014e05a     0 32581      1              32561\n\tCall Trace:\n\t [\u003cffffffff80063c3f\u003e] __mutex_lock_slowpath+0x60/0x9b\n\t [\u003cffffffff8000ccf1\u003e] do_path_lookup+0x2ca/0x2f1\n\t [\u003cffffffff80063c89\u003e] .text.lock.mutex+0xf/0x14\n\t [\u003cffffffff800e6d55\u003e] do_rmdir+0x77/0xde\n\t [\u003cffffffff8005d229\u003e] tracesys+0x71/0xe0\n\t [\u003cffffffff8005d28d\u003e] tracesys+0xd5/0xe0\n\nwhich means that the system is deadlocked.\n\nThis patch allows autofs to hold up normal processes whilst the daemon goes\nahead and does things to the dentry tree behind the automouter point without\nrisking a deadlock as almost no locks are held in d_manage() and none in\nd_automount().\n\nSigned-off-by: David Howells \u003cdhowells@redhat.com\u003e\nWas-Acked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "34286d6662308d82aed891852d04c7c3a2649b16",
      "tree": "c4b7311404d302e7cb94df7a4690298e1059910a",
      "parents": [
        "44a7d7a878c9cbb74f236ea755b25b6b2e26a9a9"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:57 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:29 2011 +1100"
      },
      "message": "fs: rcu-walk aware d_revalidate method\n\nRequire filesystems be aware of .d_revalidate being called in rcu-walk\nmode (nd-\u003eflags \u0026 LOOKUP_RCU). For now do a simple push down, returning\n-ECHILD from all implementations.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "fb045adb99d9b7c562dc7fef834857f78249daa1",
      "tree": "1fd6a4024fffeec568abe100d730589bfdb81c38",
      "parents": [
        "5f57cbcc02cf18f6b22ef4066bb10afeb8f930ff"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:55 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:28 2011 +1100"
      },
      "message": "fs: dcache reduce branches in lookup path\n\nReduce some branches and memory accesses in dcache lookup by adding dentry\nflags to indicate common d_ops are set, rather than having to check them.\nThis saves a pointer memory access (dentry-\u003ed_op) in common path lookup\nsituations, and saves another pointer load and branch in cases where we\nhave d_op but not the particular operation.\n\nPatched with:\n\ngit grep -E \u0027[.\u003e]([[:space:]])*d_op([[:space:]])*\u003d\u0027 | xargs sed -e \u0027s/\\([^\\t ]*\\)-\u003ed_op \u003d \\(.*\\);/d_set_d_op(\\1, \\2);/\u0027 -e \u0027s/\\([^\\t ]*\\)\\.d_op \u003d \\(.*\\);/d_set_d_op(\\\u0026\\1, \\2);/\u0027 -i\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "b5c84bf6f6fa3a7dfdcb556023a62953574b60ee",
      "tree": "7a2c299a180713e21d5cb653cb933121adf53c31",
      "parents": [
        "949854d02455080d20cd3e1db28a3a18daf7599d"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:38 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:23 2011 +1100"
      },
      "message": "fs: dcache remove dcache_lock\n\ndcache_lock no longer protects anything. remove it.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "2fd6b7f50797f2e993eea59e0a0b8c6399c811dc",
      "tree": "ce33b94b34844c09103836cf4cfa4364b742f217",
      "parents": [
        "da5029563a0a026c64821b09e8e7b4fd81d3fe1b"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:34 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:21 2011 +1100"
      },
      "message": "fs: dcache scale subdirs\n\nProtect d_subdirs and d_child with d_lock, except in filesystems that aren\u0027t\nusing dcache_lock for these anyway (eg. using i_mutex).\n\nNote: if we change the locking rule in future so that -\u003ed_child protection is\nprovided only with -\u003ed_parent-\u003ed_lock, it may allow us to reduce some locking.\nBut it would be an exception to an otherwise regular locking scheme, so we\u0027d\nhave to see some good results. Probably not worthwhile.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "b7ab39f631f505edc2bbdb86620d5493f995c9da",
      "tree": "62be97ebc7fc69ceb601f23312d335ebb8038ee7",
      "parents": [
        "2304450783dfde7b0b94ae234edd0dbffa865073"
      ],
      "author": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:49:32 2011 +1100"
      },
      "committer": {
        "name": "Nick Piggin",
        "email": "npiggin@kernel.dk",
        "time": "Fri Jan 07 17:50:21 2011 +1100"
      },
      "message": "fs: dcache scale dentry refcount\n\nMake d_count non-atomic and protect it with d_lock. This allows us to ensure a\n0 refcount dentry remains 0 without dcache_lock. It is also fairly natural when\nwe start protecting many other dentry members with d_lock.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@kernel.dk\u003e\n"
    },
    {
      "commit": "de47de7404e29df8de82f5822b4fde1a6ed97b54",
      "tree": "aac835759ef7bf8317847f467c0c0685827da38e",
      "parents": [
        "cf7d7e5a1980d1116ee152d25dac382b112b9c17"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 07 13:04:00 2010 +0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Dec 07 07:45:44 2010 -0800"
      },
      "message": "autofs4 - remove ioctl mutex (bz23142)\n\nWith the recent changes to remove the BKL a mutex was added to the\nioctl entry point for calls to the old ioctl interface. This mutex\nneeds to be removed because of the need for the expire ioctl to call\nback to the daemon to perform a umount and receive a completion\nstatus (via another ioctl).\n\nThis should be fine as the new ioctl interface uses much of the same\ncode and it has been used without a mutex for around a year without\nissue, as was the original intention.\n\nRef: Bugzilla bug 23142\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nAcked-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5a44a73b9015e89cfb280ba0534dfcbf1ef29d05",
      "tree": "ab735f09b52700de4e61c46d4199c6c17b64cab3",
      "parents": [
        "26daad8067f976a6e3622b42b0d80de9a53e8ad9"
      ],
      "author": {
        "name": "Felipe Contreras",
        "email": "felipe.contreras@gmail.com",
        "time": "Fri Sep 24 15:22:23 2010 +0200"
      },
      "committer": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Tue Oct 05 11:02:15 2010 +0200"
      },
      "message": "autofs4: Only declare function when CONFIG_COMPAT is defined\n\nThe patch solves the following warnings message when CONFIG_COMPAT\nis not defined:\n\nfs/autofs4/root.c:31: warning: ‘autofs4_root_compat_ioctl’ declared ‘static’ but never defined\n\nSigned-off-by: Felipe Contreras \u003cfelipe.contreras@gmail.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\n"
    },
    {
      "commit": "00e300e1b682ea86fcb5216250722afd42686ab3",
      "tree": "ac3c5a6034aa669993487163eef4f757d2f803af",
      "parents": [
        "4f819a7899b06afcd7623ab9d00fd81503ad3e24"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Tue Sep 14 23:00:34 2010 +0200"
      },
      "committer": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Mon Oct 04 21:10:46 2010 +0200"
      },
      "message": "BKL: Remove BKL from autofs4\n\nautofs4 uses the BKL only to guard its ioctl operations.\nThis can be trivially converted to use a mutex, as we have\ndone with most device drivers before.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: \"H. Peter Anvin\" \u003chpa@zytor.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\n"
    },
    {
      "commit": "5fc79d85d2ab7ce144bc75e06cab58126249afbb",
      "tree": "f6c4ca70e3905cbec541d925f4199c020fa61d8b",
      "parents": [
        "89596f20bb5f0f32c37abd337d995080e04519c8"
      ],
      "author": {
        "name": "Dan Carpenter",
        "email": "error27@gmail.com",
        "time": "Tue Aug 10 18:02:04 2010 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Aug 11 08:59:06 2010 -0700"
      },
      "message": "autofs4: remove unneeded null check in try_to_fill_dentry()\n\nAfter 97e7449a7ad: \"autofs4: fix indirect mount pending expire race\" we no\nlonger assumed that \"ino\" can be null.  The other null checks got removed\nbut this was one was missed.\n\nSigned-off-by: Dan Carpenter \u003cerror27@gmail.com\u003e\nCc: Ian Kent \u003craven@themaw.net\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": "c9243f5bdd6637b2bb7dc254b54d9edf957ef17e",
      "tree": "254c0733f9d547651f467ed6502c7335804eaaf8",
      "parents": [
        "86a5ef7d777cdd61dfe82379d559dbea069aea3d"
      ],
      "author": {
        "name": "Arnd Bergmann",
        "email": "arnd@arndb.de",
        "time": "Sun Jul 04 00:15:07 2010 +0200"
      },
      "committer": {
        "name": "Frederic Weisbecker",
        "email": "fweisbec@gmail.com",
        "time": "Mon Aug 09 00:13:34 2010 +0200"
      },
      "message": "autofs/autofs4: Move compat_ioctl handling into fs\n\nHandling of autofs ioctl numbers does not need to be generic\nand can easily be done directly in autofs itself.\n\nThis also pushes the BKL into autofs and autofs4 ioctl\nmethods.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: H. Peter Anvin \u003chpa@zytor.com\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nCc: Autofs \u003cautofs@linux.kernel.org\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\n"
    },
    {
      "commit": "3663df70c028bc435d6f2ec532a4849db62d1656",
      "tree": "5ae705c680ac791d0caf1cc0c20ed02ae920b4de",
      "parents": [
        "d6c89d9aca0933d90ab926bf448b32f24a163792"
      ],
      "author": {
        "name": "Frederic Weisbecker",
        "email": "fweisbec@gmail.com",
        "time": "Wed May 19 15:08:17 2010 +0200"
      },
      "committer": {
        "name": "Frederic Weisbecker",
        "email": "fweisbec@gmail.com",
        "time": "Sat May 22 17:44:18 2010 +0200"
      },
      "message": "autofs4: Pushdown the bkl from ioctl\n\nPushdown the bkl to autofs4_root_ioctl.\n\nSigned-off-by: Frederic Weisbecker \u003cfweisbec@gmail.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nCc: Autofs \u003cautofs@linux.kernel.org\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: John Kacur \u003cjkacur@redhat.com\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\n"
    },
    {
      "commit": "f7422464b57088071201cd94027662d8469f153b",
      "tree": "d6eea687462815fbcbe43aa6b273f672babd5f2e",
      "parents": [
        "b77b907fae863f3bc546a336a8bc5e660d371788"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon May 10 16:46:08 2010 +0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Mon May 10 09:48:10 2010 -0700"
      },
      "message": "autofs4-2.6.34-rc1 - fix link_count usage\n\nAfter commit 1f36f774b2 (\"Switch !O_CREAT case to use of do_last()\") in\n2.6.34-rc1 autofs direct mounts stopped working.  This is caused by\ncurrent-\u003elink_count being 0 when -\u003efollow_link() is called from\ndo_filp_open().\n\nI can\u0027t work out why this hasn\u0027t been seen before Als patch series.\n\nThis patch removes the autofs dependence on current-\u003elink_count.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05",
      "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1",
      "parents": [
        "ed391f4ebf8f701d3566423ce8f17e614cde9806"
      ],
      "author": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Wed Mar 24 17:04:11 2010 +0900"
      },
      "committer": {
        "name": "Tejun Heo",
        "email": "tj@kernel.org",
        "time": "Tue Mar 30 22:02:32 2010 +0900"
      },
      "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files.  percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed.  Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability.  As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n  http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n  only the necessary includes are there.  ie. if only gfp is used,\n  gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n  blocks and try to put the new include such that its order conforms\n  to its surrounding.  It\u0027s put in the include block which contains\n  core kernel includes, in the same order that the rest are ordered -\n  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n  doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n  because the file doesn\u0027t have fitting include block), it prints out\n  an error message indicating which .h file needs to be added to the\n  file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n   over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n   and ~3000 slab.h inclusions.  The script emitted errors for ~400\n   files.\n\n2. Each error was manually checked.  Some didn\u0027t need the inclusion,\n   some needed manual addition while adding it to implementation .h or\n   embedding .c file was more appropriate for others.  This step added\n   inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n   from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n   e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n   APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n   editing them as sprinkling gfp.h and slab.h inclusions around .h\n   files could easily lead to inclusion dependency hell.  Most gfp.h\n   inclusion directives were ignored as stuff from gfp.h was usually\n   wildly available and often used in preprocessor macros.  Each\n   slab.h inclusion directive was examined and added manually as\n   necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my\n   distributed build env didn\u0027t work with gcov compiles) and a few\n   more options had to be turned off depending on archs to make things\n   build (like ipr on powerpc/64 which failed due to missing writeq).\n\n   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n   * powerpc and powerpc64 SMP allmodconfig\n   * sparc and sparc64 SMP allmodconfig\n   * ia64 SMP allmodconfig\n   * s390 SMP allmodconfig\n   * alpha SMP allmodconfig\n   * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n   a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n"
    },
    {
      "commit": "4b1ae27a96d9860e6c4348673e8fb6a0322511fe",
      "tree": "d9d195bfef3e8e746ef68adb4364516633d27313",
      "parents": [
        "60b341b778cc2929df16c0a504c91621b3c6a4ad"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 03 12:58:31 2010 -0500"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Wed Mar 03 12:58:31 2010 -0500"
      },
      "message": "Revert \"autofs4: always use lookup for lookup\"\n\nThis reverts commit 213614d583748d00967a91cacd656f417efb36ce.\n\nAlas, -\u003ed_revalidate() can\u0027t rely on -\u003elookup() finishing what\nit\u0027s started; if d_alloc() in do_lookup() fails, we are not going\nto call -\u003elookup() at all.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "213614d583748d00967a91cacd656f417efb36ce",
      "tree": "f24b85cb8192af7f6723f3886fba3da55ccfbe0d",
      "parents": [
        "cb4b492ac7595aad10756fe0b04691f0965e0cfc"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:51 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: always use lookup for lookup\n\nWe need to be able to cope with the directory mutex being held during\n-\u003ed_revalidate() in some cases, but not all cases, and not necessarily by\nus.  Because we need to release the mutex when we call back to the daemon\nto do perform a mount we must be sure that it is us who holds the mutex so\nwe must redirect mount requests to -\u003elookup() if the mutex is held.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "cb4b492ac7595aad10756fe0b04691f0965e0cfc",
      "tree": "e0737776e152e83c9d449086b631a975f165bcc7",
      "parents": [
        "e4d5ade7b54cf74efcf53ff3dcb09454c29d70cf"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:50 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: rename dentry to expiring in autofs4_lookup_expiring()\n\nIn autofs4_lookup_expiring() a declaration within the list traversal loop\nuses a declaration that has the same name as the function parameter.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e4d5ade7b54cf74efcf53ff3dcb09454c29d70cf",
      "tree": "8ba8009ed1b3bb67cf4429de4930b639c4f3ab86",
      "parents": [
        "c42c7f7e698fa888abbd50eb9c8e328fff68914f"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:49 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: rename dentry to active in autofs4_lookup_active()\n\nIn autofs4_lookup_active() a declaration within the list traversal loop\nuses a declaration that has the same name as the function parameter.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c42c7f7e698fa888abbd50eb9c8e328fff68914f",
      "tree": "cdcc21d21cdf2f695cba0298db75c609060e87e6",
      "parents": [
        "6510c9d8595adcee2b0dc86408bc432a8dd7d652"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:48 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: eliminate d_unhashed in path walk checks\n\nWe unhash the dentry (in a subsequent patch) in -\u003ed_revalidate() in order\nto send mount requests to -\u003elookup().  But then we can not rely on\nd_unhased() to give reliable results because it may be called at any time\nby any code path.  The d_unhashed() function is used by __simple_empty()\nin the path walking callbacks but autofs mount point dentrys should have\nno directories at all so a list_empty() on d_subdirs should be (and is)\nsufficient.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "6510c9d8595adcee2b0dc86408bc432a8dd7d652",
      "tree": "a0c9540de9004686633c2eb339d32ef24907fc2f",
      "parents": [
        "90387c9c1d5787aeb7dfdfc90c8f8aeaeed7ad0e"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:47 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: cleanup active and expire lookup\n\nThe lookup functions for active and expiring dentrys use parameters that\ncan be easily obtained on entry so we change the call to to take just the\ndentry.  This makes the subsequent change, to send all lookups to\n-\u003elookup(), a bit cleaner.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "90387c9c1d5787aeb7dfdfc90c8f8aeaeed7ad0e",
      "tree": "79733f21cccb7ddb958d8638ebf199611660a9f1",
      "parents": [
        "aa952eb26d4344fdad44c104f3c298d3130c53da"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:46 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: renamer unhashed to active in autofs4_lookup()\n\nRename the variable unhashed to active in autofs4_lookup() to better\nreflect its usage.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "aa952eb26d4344fdad44c104f3c298d3130c53da",
      "tree": "4a49859b272d8d42ae7fa68c5d30f6aa2fd82742",
      "parents": [
        "36b6413ef301d30f60037e497ecb902897895473"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:45 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:58 2009 -0800"
      },
      "message": "autofs4: use autofs_info for pending flag\n\nEliminate the use of the d_lock spin lock by using the autofs super block\ninfo spin lock.  This reduces the number of spin locks we use by one and\nmakes the code for the following patch (to redirect -\u003ed_revalidate() to\n-\u003elookup()) a little simpler.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "36b6413ef301d30f60037e497ecb902897895473",
      "tree": "6f1e4ce514d691b02d2506fed5780e5b4dc0f6b1",
      "parents": [
        "c4cd70b3e3e95cc2201a00edf6deb52327d73c6b"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:44 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:57 2009 -0800"
      },
      "message": "autofs4: use helper function for need mount check\n\nDefine simple helper function for checking if we need to trigger a mount.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c4cd70b3e3e95cc2201a00edf6deb52327d73c6b",
      "tree": "20150b87f5fdc0915db45937f727fd9e1aee0c74",
      "parents": [
        "4f8427d1903148f9753eb35c5f51a8a865457329"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:43 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:57 2009 -0800"
      },
      "message": "autofs4: use helper functions for expiring list\n\nDefine some simple helper functions for adding and deleting entries on the\nexpiring dentry list.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "4f8427d1903148f9753eb35c5f51a8a865457329",
      "tree": "8d40dc21c988f53dd154b61eb1ed66914bedf7a3",
      "parents": [
        "9ea9a886b0e8630e12cff515955e7f0f5be32cb1"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Dec 15 16:45:42 2009 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Dec 16 07:19:57 2009 -0800"
      },
      "message": "autofs4: use helper functions for active list handling\n\nDefine some simple helper functions for adding and deleting entries on the\nactive (and unhashed) dentry list.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Sage Weil \u003csage@newdream.net\u003e\nCc: Al Viro \u003cviro@ZenIV.linux.org.uk\u003e\nCc: Andreas Dilger \u003cadilger@sun.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Yehuda Saheh \u003cyehuda@newdream.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9393bd07cf218ca51d0e627653f906a9d76a9131",
      "tree": "402205fe6336028df48cd65b31da0482f0b0bb41",
      "parents": [
        "589ff870ed60a9ebdd5ec99ec3f5afe1282fe151"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sat Apr 18 13:58:15 2009 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Thu Jun 11 21:36:01 2009 -0400"
      },
      "message": "switch follow_down()\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "8f63aaa8b9239475fc580d4450f1141496655305",
      "tree": "eca8552ab842a7a2eecea104e5842f7bccadf09b",
      "parents": [
        "56fcef75117a153f298b3fe54af31053f53997dd"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Mar 31 15:24:45 2009 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Wed Apr 01 08:59:23 2009 -0700"
      },
      "message": "autofs4: fix lookup deadlock\n\nA deadlock can occur when user space uses a signal (autofs version 4 uses\nSIGCHLD for this) to effect expire completion.\n\nThe order of events is:\n\nExpire process completes, but before being able to send SIGCHLD to it\u0027s parent\n...\n\nAnother process walks onto a different mount point and drops the directory\ninode semaphore prior to sending the request to the daemon as it must ...\n\nA third process does an lstat on on the expired mount point causing it to wait\non expire completion (unfortunately) holding the directory semaphore.\n\nThe mount request then arrives at the daemon which does an lstat and,\ndeadlock.\n\nFor some time I was concerned about releasing the directory semaphore around\nthe expire wait in autofs4_lookup as well as for the mount call back.  I\nfinally realized that the last round of changes in this function made the\nexpiring dentry and the lookup dentry separate and distinct so the check and\npossible wait can be done anywhere prior to the mount call back.  This patch\nmoves the check to just before the mount call back and inside the directory\ninode mutex release.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "08f11513fa6f712506edb99327f7d051da9d860f",
      "tree": "4c174f5d9d573187687c4c638d90a4dee69cce1a",
      "parents": [
        "a488257ce5a55c53973671218791296463698d07"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri Feb 20 05:56:19 2009 +0000"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Fri Mar 27 14:44:00 2009 -0400"
      },
      "message": "constify dentry_operations: autofs, autofs4\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "59af1584bf33810639cb98d79856021253e2177c",
      "tree": "dbb7261a2abdef5f1716b27417f8b2b61d42b418",
      "parents": [
        "8f3f655da7288504c1013621090ecc940173ae1c"
      ],
      "author": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Sun Aug 24 07:24:41 2008 -0400"
      },
      "committer": {
        "name": "Al Viro",
        "email": "viro@zeniv.linux.org.uk",
        "time": "Mon Aug 25 01:18:09 2008 -0400"
      },
      "message": "[PATCH] fix -\u003ellseek() for a bunch of directories\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n"
    },
    {
      "commit": "aa55ddf340c9fa3f303ee16bbf35887e42c50304",
      "tree": "62194eef352ef852e6da1a9a3b685d2f56ac9c3b",
      "parents": [
        "06a3598552dc3b2b30eb18bd53bbac2a901489d7"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:29 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:33 2008 -0700"
      },
      "message": "autofs4: remove unused ioctls\n\nThe ioctls AUTOFS_IOC_TOGGLEREGHOST and AUTOFS_IOC_ASKREGHOST were added\nseveral years ago but what they were intended for has never been\nimplemented (as far as I\u0027m aware noone uses them) so remove them.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nReviewed-by: Jeff Moyer \u003cjmoyer@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": "06a3598552dc3b2b30eb18bd53bbac2a901489d7",
      "tree": "bb209268deac3b12d63d07c67a76ba10561f6a11",
      "parents": [
        "ec6e8c7d3f9073336ec7b2eed3fcda6f922087c3"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:28 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:32 2008 -0700"
      },
      "message": "autofs4: reorganize expire pending wait function calls\n\nThis patch re-orgnirzes the checking for and waiting on active expires and\nelininates redundant checks.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Jeff Moyer \u003cjmoyer@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": "ec6e8c7d3f9073336ec7b2eed3fcda6f922087c3",
      "tree": "f88f8c2c972477e64f29ad619b9f42f6d5dcf961",
      "parents": [
        "6e60a9ab5f5d314735467752f623072f5b75157a"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:28 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:32 2008 -0700"
      },
      "message": "autofs4: fix direct mount pending expire race - correction\n\nAppologies, somehow I seem to have sent an out dated version of this\npatch. Here is an additional patch that brings the patch up to date.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Jeff Moyer \u003cjmoyer@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": "6e60a9ab5f5d314735467752f623072f5b75157a",
      "tree": "1a42df40e6fad52bd6be74970af8eb56870fe6ba",
      "parents": [
        "97e7449a7ad883bf9f516fc970778d75999c7843"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:27 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:32 2008 -0700"
      },
      "message": "autofs4: fix direct mount pending expire race\n\nFor direct and offset type mounts that are covered by another mount we\ncannot check the AUTOFS_INF_EXPIRING flag during a path walk which leads\nto lookups walking into an expiring mount while it is being expired.\n\nFor example, for the direct multi-mount map entry with a couple of\noffsets:\n\n/race/mm1  /      \u003cserver1\u003e:/\u003cpath1\u003e\n           /om1   \u003cserver2\u003e:/\u003cpath2\u003e\n           /om2   \u003cserver1\u003e:/\u003cpath3\u003e\n\nan autofs trigger mount is mounted on /race/mm1 and when accessed it is\nover mounted and trigger mounts made for /race/mm1/om1 and /race/mm1/om2.\nSo it isn\u0027t possible for path walks to see the expiring flag at all and\nthey happily walk into the file system while it is expiring.\n\nWhen expiring these mounts follow_down() must stop at the autofs mount and\nall processes must block in the -\u003efollow_link() method (except the daemon)\nuntil the expire is complete.  This is done by decrementing the d_mounted\nfield of the autofs trigger mount root dentry until the expire is\ncompleted.  In -\u003efollow_link() all processes wait on the expire and the\nmount following is completed for the daemon until the expire is complete.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Jeff Moyer \u003cjmoyer@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": "97e7449a7ad883bf9f516fc970778d75999c7843",
      "tree": "903f6de243847eb12d1a372b271b15046ecdc774",
      "parents": [
        "26e81b3142f1ba497d4cd0365c13661684b784ce"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:26 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:32 2008 -0700"
      },
      "message": "autofs4: fix indirect mount pending expire race\n\nThe selection of a dentry for expiration and the setting of the\nAUTOFS_INF_EXPIRING flag isn\u0027t done atomically which can lead to lookups\nwalking into an expiring mount.\n\nWhat happens is that an expire is initiated by the daemon and a dentry is\nselected for expire but, since there is no lock held between the selection\nand setting of the expiring flag, a process may find the flag clear and\ncontinue walking into the mount tree at the same time the daemon attempts\nthe expire it.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nReviewed-by: Jeff Moyer \u003cjmoyer@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": "26e81b3142f1ba497d4cd0365c13661684b784ce",
      "tree": "b21545ceca70a0e93da1e4e6b19b5dcb99549d2d",
      "parents": [
        "ff9cd499d6258952385cb2f12e9a3c0908fd5786"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:25 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:32 2008 -0700"
      },
      "message": "autofs4: fix pending checks\n\nThere are two cases for which a dentry that has a pending mount request\ndoes not wait for completion.  One is via autofs4_revalidate() and the\nother via autofs4_follow_link().\n\nIn revalidate, after the mount point directory is created, but before the\nmount is done, the check in try_to_fill_dentry() can can fail to send the\ndentry to the wait queue since the dentry is positive and the lookup flags\nmay contain only LOOKUP_FOLLOW.  Although we don\u0027t trigger a mount for the\nLOOKUP_FOLLOW flag, if ther\u0027s one pending we might as well wait and use\nthe mounted dentry for the lookup.\n\nIn autofs4_follow_link() the dentry is not checked to see if it is pending\nso it may fail to call try_to_fill_dentry() and not wait for mount\ncompletion.\n\nA dentry that is pending must always be sent to the wait queue.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nReviewed-by: Jeff Moyer \u003cjmoyer@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": "ff9cd499d6258952385cb2f12e9a3c0908fd5786",
      "tree": "6614b95a82361c7a69fe52168db5836e313bd366",
      "parents": [
        "c72305b5472522299bb6f45b736080128eb1c822"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:24 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:32 2008 -0700"
      },
      "message": "autofs4: cleanup redundant readir code\n\nThe mount triggering functionality of readdir and related functions is no\nlonger used (and is quite broken as well).  The unused portions have been\nremoved.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nReviewed-by: Jeff Moyer \u003cjmoyer@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": "6d5cb926fa0162b1e62f37c117cc7ce763cfcbb9",
      "tree": "275f1154f7724c6b86c3ec9e2c36ff8f96c3e55d",
      "parents": [
        "c432c2586a0811c7d0030d78f0993568bc889a6f"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:15 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:31 2008 -0700"
      },
      "message": "autofs4: use lookup intent flags to trigger mounts\n\nWhen an open(2) call is made on an autofs mount point directory that\nalready exists and the O_DIRECTORY flag is not used the needed mount\ncallback to the daemon is not done. This leads to the path walk\ncontinuing resulting in a callback to the daemon with an incorrect\nkey. open(2) is called without O_DIRECTORY by the \"find\" utility but\nthis should be handled properly anyway.\n\nThis happens because autofs needs to use the lookup flags to decide\nwhen to callback to the daemon to perform a mount to prevent mount\nstorms. For example, an autofs indirect mount map that has the \"browse\"\noption will have the mount point directories are pre-created and the\nstat(2) call made by a color ls against each directory will cause all\nthese directories to be mounted. It is unfortunate we need to resort\nto this but mount maps can be quite large. Additionally, if a user\nmanually umounts an autofs indirect mount the directory isn\u0027t removed\nwhich also leads to this situation.\n\nTo resolve this autofs needs to use the lookup intent flags to enable\nit to make this decision. This patch adds this check and triggers a\ncall back if any of the lookup intent flags are set as all these calls\nwarrant a mount attempt be requested.\n\nI know that external VFS code which uses the lookup flags is something\nthat the VFS would like to eliminate but I have no choice as I can\u0027t\nsee any other way to do this. A VFS dentry or inode operation callback\nwhich returns the lookup \"type\" (requires a definition) would be\nsufficient. But this change is needed now and I\u0027m not aware of the form\nthat coming VFS changes will take so I\u0027m not willing to propose anything\nalong these lines.\n\nIf anyone can provide an alternate method I would be happy to use it.\n\n[akpm@linux-foundation.org: fix build for concurrent VFS changes]\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Jeff Moyer \u003cjmoyer@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": "c432c2586a0811c7d0030d78f0993568bc889a6f",
      "tree": "b5d711345120af6cc6ae67836d0773a5857e3e8c",
      "parents": [
        "ef581a742874ebc4c28d24b374c78b762144ebdc"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:14 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:31 2008 -0700"
      },
      "message": "autofs4: don\u0027t release directory mutex if called in oz_mode\n\nSince we now delay hashing of dentrys until the -\u003emkdir() call, droping\nand re-taking the directory mutex within the -\u003elookup() function when we\nare being called by user space is not needed.  This can lead to a race\nwhen other processes are attempting to access the same directory during\nmount point directory creation.\n\nIn this case we need to hang onto the mutex to ensure we don\u0027t get user\nprocesses trying to create a mount request for a newly created dentry\nafter the mount point entry has already been created.  This ensures that\nwhen we need to check a dentry passed to autofs4_wait(), if it is hashed,\nit is always the mount point dentry and not a new dentry created by\nanother lookup during directory creation.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "ef581a742874ebc4c28d24b374c78b762144ebdc",
      "tree": "8dfced9c0fc8e18a3b81aac9fae2b843d251b8a6",
      "parents": [
        "2576737873dc1d9ea461a5955a5f6779b569a350"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:13 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:31 2008 -0700"
      },
      "message": "autofs4: fix symlink name allocation\n\nThe length of the symlink name has been moved but it needs to be set\nbefore allocating space for it in the dentry info struct.  This corrects a\nmistake in a recent patch.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "2576737873dc1d9ea461a5955a5f6779b569a350",
      "tree": "aad8f5cf52c872f307275328022a3bcb94a6c342",
      "parents": [
        "caf7da3d5d4d9dd873eb52d025d8cc63b89f1fdb"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:12 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:31 2008 -0700"
      },
      "message": "autofs4: use look aside list for lookups\n\nA while ago a patch to resolve a deadlock during directory creation was\nmerged.  This delayed the hashing of lookup dentrys until the -\u003emkdir()\n(or -\u003esymlink()) operation completed to ensure we always went through\n-\u003elookup() instead of also having processes go through -\u003erevalidate() so\nour VFS locking remained consistent.\n\nNow we are seeing a couple of side affects of that change in situations\nwith heavy mount activity.\n\nTwo cases have been identified:\n\n1) When a mount request is triggered, due to the delayed hashing, the\n   directory created by user space for the mount point doesn\u0027t have the\n   DCACHE_AUTOFS_PENDING flag set.  In the case of an autofs multi-mount\n   where a tree of mount point directories are created this can lead to\n   the path walk continuing rather than the dentry being sent to the wait\n   queue to wait for request completion.  This is because, if the pending\n   flag isn\u0027t set, the criteria for deciding this is a mount in progress\n   fails to hold, namely that the dentry is not a mount point and has no\n   subdirectories.\n\n2) A mount request dentry is initially created negative and unhashed.\n   It remains this way until the -\u003emkdir() callback completes.  Since it\n   is unhashed a fresh dentry is used when the user space mount request\n   creates the mount point directory.  This leaves the original dentry\n   negative and unhashed.  But revalidate has no way to tell the VFS that\n   the dentry has changed, other than to force another -\u003elookup() by\n   returning false, which is at best wastefull and at worst not possible.\n   This results in an -ENOENT return from the original path walk when in\n   fact the mount succeeded.\n\nTo resolve this we need to ensure that the same dentry is used in all\ncalls to -\u003elookup() during the course of a mount request.  This patch\nachieves that by adding the initial dentry to a look aside list and\nremoves it at -\u003emkdir() or -\u003esymlink() completion (or when the dentry is\nreleased), since these are the only create operations autofs4 supports.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "caf7da3d5d4d9dd873eb52d025d8cc63b89f1fdb",
      "tree": "9e53359c28c4247eae9685a5f9c63a5c0a54a7b1",
      "parents": [
        "5f6f4f28b6ba543beef8bad91aa6f69c7ffeee51"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:11 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:31 2008 -0700"
      },
      "message": "autofs4: revert - redo lookup in ttfd\n\nThis patch series enables the use of a single dentry for lookups prior to\nthe dentry being hashed and so we no longer need to redo the lookup.  This\npatch reverts the patch of commit\n033790449ba9c4dcf8478a87693d33df625c23b5.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "5f6f4f28b6ba543beef8bad91aa6f69c7ffeee51",
      "tree": "72f3aac56d49c7bea7940f8d8b6e8ca559e3ae1c",
      "parents": [
        "391b52f98cf2e9bff227dad8bf9ea206fec43fa4"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Jul 23 21:30:09 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu Jul 24 10:47:31 2008 -0700"
      },
      "message": "autofs4: don\u0027t make expiring dentry negative\n\nCorrect the error of making a positive dentry negative after it has been\ninstantiated.\n\nThe code that makes this error attempts to re-use the dentry from a\nconcurrent expire and mount to resolve a race and the dentry used for the\nlookup must be negative for mounts to trigger in the required cases.  The\nfact is that the dentry doesn\u0027t need to be re-used because all that is\nneeded is to preserve the flag that indicates an expire is still\nincomplete at the time of the mount request.\n\nThis change uses the the dentry to check the flag and wait for the expire\nto complete then discards it instead of attempting to re-use it.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "868eb7a8539d3e8c494209be2b1f4084a274dfef",
      "tree": "98fa82b87e638fc7898fd5a73db3e87b5d542d66",
      "parents": [
        "9d2de6ad2a78bb8b60bf7a54e6043dca44e9a801"
      ],
      "author": {
        "name": "Jan Blunck",
        "email": "jblunck@suse.de",
        "time": "Thu May 01 04:35:10 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 01 08:04:01 2008 -0700"
      },
      "message": "autofs: path_{get,put}() cleanups\n\nHere are some more places where path_{get,put}() can be used instead of\ndput()/mntput() pair.  Besides that it fixes a bug in autofs4_mount_busy()\nwhere mntput() was called before dput().\n\nSigned-off-by: Jan Blunck \u003cjblunck@suse.de\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "9d2de6ad2a78bb8b60bf7a54e6043dca44e9a801",
      "tree": "6e5b7aea51d739ba0e26e4d795d53093ded3933a",
      "parents": [
        "033790449ba9c4dcf8478a87693d33df625c23b5"
      ],
      "author": {
        "name": "Jeff Moyer",
        "email": "jmoyer@redhat.com",
        "time": "Thu May 01 04:35:09 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 01 08:04:01 2008 -0700"
      },
      "message": "autofs4: fix incorrect return from root.c:try_to_fill_dentry()\n\nJeff Moyer has identified a case where the autofs4 function\nroot.c:try_to_fill_dentry() can return -EBUSY when it should return 0.\n\nJeff\u0027s description of the way this happens is:\n\n\"automount starts an expire for directory d.  after the callout to the daemon,\nbut before the rmdir, another process tries to walk into the same directory.\nIt puts itself onto the waitq, pending the expiration.\n\nWhen the expire finishes, the second process is woken up.  In\ntry_to_fill_dentry, it does this check:\n\n                status \u003d d_invalidate(dentry);\n                if (status !\u003d -EBUSY)\n                        return -EAGAIN;\n\nAnd status is EBUSY.  The dentry still has a non-zero d_inode, and the\nflags do not contain LOOKUP_CONTINUE or LOOKUP_DIRECTORY\n\nSo, we fall through and return -EBUSY to the caller.\"\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "033790449ba9c4dcf8478a87693d33df625c23b5",
      "tree": "41cae3efc255949643166e9dad79bc8fc00893b8",
      "parents": [
        "cab0936aac8aa907c6bb814c2cf26385478f254b"
      ],
      "author": {
        "name": "Jeff Moyer",
        "email": "jmoyer@redhat.com",
        "time": "Thu May 01 04:35:08 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Thu May 01 08:04:01 2008 -0700"
      },
      "message": "autofs4: fix execution order race in mount request code\n\nJeff Moyer has identified a race in due to an execution order dependency\nin the autofs4 function root.c:try_to_fill_dentry().\n\nJeff\u0027s description of this race is:\n\n\"P1 does a lookup of /mount/submount/foo.  Since the VFS can\u0027t find an entry\nfor \"foo\" under /mount/submount, it calls into the autofs4 kernel module to\nallocate a new dentry, D1.  The kernel creates a new waitq for this lookup and\ncalls the daemon to perform the mount.\n\nThe daemon performs a mkdir of the \"foo\" directory under /mount/submount,\nwhich ends up creating a *new* dentry, D2.\n\nThen, P2 does a lookup of /mount/submount/foo.  The VFS path walking logic\nfinds a dentry in the dcache, D2, and calls the revalidate function with this.\n In the autofs4 revalidate code, we then trigger a mount, since the dentry is\nan empty directory that isn\u0027t a mountpoint, and so set DCACHE_AUTOFS_PENDING\nand call into the wait code to trigger the mount.\n\nThe wait code finds our existing waitq entry (since it is keyed off of the\ndirectory name) and adds itself to the list of waiters.\n\nAfter the daemon finishes the mount, it calls back into the kernel to release\nthe waiters.  When this happens, P1 is woken up and goes about clearing the\nDCACHE_AUTOFS_PENDING flag, but it does this in D1!  So, given that P1 in our\ncase is a program that will immediately try to access a file under\n/mount/submount/foo, we end up finding the dentry D2 which still has the\npending flag set, and we set out to wait for a mount *again*!\n\nSo, one way to address this is to re-do the lookup at the end of\ntry_to_fill_dentry, and to clear the pending flag on the hashed dentry.  This\nseems a sane approach to me.\"\n\nAnd Jeff\u0027s patch does this.\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nSigned-off-by-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f249fdd8c19ff65825c0be67212cdf22e556668e",
      "tree": "d8eb3c461ef5ba0f6692e237548c755f47bbf8b4",
      "parents": [
        "58b250daff6a24518813975143c8433d9d5b684f"
      ],
      "author": {
        "name": "Harvey Harrison",
        "email": "harvey.harrison@gmail.com",
        "time": "Tue Apr 29 00:59:03 2008 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@linux-foundation.org",
        "time": "Tue Apr 29 08:06:01 2008 -0700"
      },
      "message": "autofs4: fix sparse warning in root.c\n\nfs/autofs4/root.c:536:23: warning: symbol \u0027ino\u0027 shadows an earlier one\nfs/autofs4/root.c:510:22: originally declared here\n\nThere is no need to redeclare, we are at the end of the loop and in\nthe next iteration of the loop, ino will be reset.\n\nSigned-off-by: Harvey Harrison \u003charvey.harrison@gmail.com\u003e\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "1d957f9bf87da74f420424d16ece005202bbebd3",
      "tree": "363d4770c0c74a536524c99ccd2762ce96ee9bbe",
      "parents": [
        "4ac9137858e08a19f29feac4e1f4df7c268b0ba5"
      ],
      "author": {
        "name": "Jan Blunck",
        "email": "jblunck@suse.de",
        "time": "Thu Feb 14 19:34:35 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Feb 14 21:13:33 2008 -0800"
      },
      "message": "Introduce path_put()\n\n* Add path_put() functions for releasing a reference to the dentry and\n  vfsmount of a struct path in the right order\n\n* Switch from path_release(nd) to path_put(\u0026nd-\u003epath)\n\n* Rename dput_path() to path_put_conditional()\n\n[akpm@linux-foundation.org: fix cifs]\nSigned-off-by: Jan Blunck \u003cjblunck@suse.de\u003e\nSigned-off-by: Andreas Gruenbacher \u003cagruen@suse.de\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: \u003clinux-fsdevel@vger.kernel.org\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Steven French \u003csfrench@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": "4ac9137858e08a19f29feac4e1f4df7c268b0ba5",
      "tree": "f5b5d84fd12fcc2b0ba0e7ce1a79ff381ad8f5dd",
      "parents": [
        "c5e725f33b733a77de622e91b6ba5645fcf070be"
      ],
      "author": {
        "name": "Jan Blunck",
        "email": "jblunck@suse.de",
        "time": "Thu Feb 14 19:34:32 2008 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Feb 14 21:13:33 2008 -0800"
      },
      "message": "Embed a struct path into struct nameidata instead of nd-\u003e{dentry,mnt}\n\nThis is the central patch of a cleanup series. In most cases there is no good\nreason why someone would want to use a dentry for itself. This series reflects\nthat fact and embeds a struct path into nameidata.\n\nTogether with the other patches of this series\n- it enforced the correct order of getting/releasing the reference count on\n  \u003cdentry,vfsmount\u003e pairs\n- it prepares the VFS for stacking support since it is essential to have a\n  struct path in every place where the stack can be traversed\n- it reduces the overall code size:\n\nwithout patch series:\n   text    data     bss     dec     hex filename\n5321639  858418  715768 6895825  6938d1 vmlinux\n\nwith patch series:\n   text    data     bss     dec     hex filename\n5320026  858418  715768 6894212  693284 vmlinux\n\nThis patch:\n\nSwitch from nd-\u003e{dentry,mnt} to nd-\u003epath.{dentry,mnt} everywhere.\n\n[akpm@linux-foundation.org: coding-style fixes]\n[akpm@linux-foundation.org: fix cifs]\n[akpm@linux-foundation.org: fix smack]\nSigned-off-by: Jan Blunck \u003cjblunck@suse.de\u003e\nSigned-off-by: Andreas Gruenbacher \u003cagruen@suse.de\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Casey Schaufler \u003ccasey@schaufler-ca.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "a47afb0f9d794d525a372c8d69902147cc88222a",
      "tree": "7bd67280e2edc1c3b1803d4a93bee794088e9342",
      "parents": [
        "858d72ead4864da0fb0b89b919524125ce998e27"
      ],
      "author": {
        "name": "Pavel Emelianov",
        "email": "xemul@openvz.org",
        "time": "Thu Oct 18 23:39:46 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri Oct 19 11:53:37 2007 -0700"
      },
      "message": "pid namespaces: round up the API\n\nThe set of functions process_session, task_session, process_group and\ntask_pgrp is confusing, as the names can be mixed with each other when looking\nat the code for a long time.\n\nThe proposals are to\n* equip the functions that return the integer with _nr suffix to\n  represent that fact,\n* and to make all functions work with task (not process) by making\n  the common prefix of the same name.\n\nFor monotony the routines signal_session() and set_signal_session() are\nreplaced with task_session_nr() and set_task_session(), especially since they\nare only used with the explicit task-\u003esignal dereference.\n\nSigned-off-by: Pavel Emelianov \u003cxemul@openvz.org\u003e\nAcked-by: Serge E. Hallyn \u003cserue@us.ibm.com\u003e\nCc: Kirill Korotaev \u003cdev@openvz.org\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Herbert Poetzl \u003cherbert@13thfloor.at\u003e\nCc: Sukadev Bhattiprolu \u003csukadev@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": "1864f7bd58351732593def024e73eca1f75bc352",
      "tree": "be7f048f3a41b257ece24805aa96453b81c78349",
      "parents": [
        "f4768ffd1d4b7b07ae2c4c3d93c9f99cd68e996c"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Aug 22 14:01:54 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Wed Aug 22 19:52:46 2007 -0700"
      },
      "message": "autofs4: deadlock during create\n\nDue to inconsistent locking in the VFS between calls to lookup and\nrevalidate deadlock can occur in the automounter.\n\nThe inconsistency is that the directory inode mutex is held for both lookup\nand revalidate calls when called via lookup_hash whereas it is held only\nfor lookup during a path walk.  Consequently, if the mutex is held during a\ncall to revalidate autofs4 can\u0027t release the mutex to callback the daemon\nas it can\u0027t know whether it owns the mutex.\n\nThis situation happens when a process tries to create a directory within an\nautomount and a second process also tries to create the same directory\nbetween the lookup and the mkdir.  Since the first process has dropped the\nmutex for the daemon callback, the second process takes it during\nrevalidate leading to deadlock between the autofs daemon and the second\nprocess when the daemon tries to create the mount point directory.\n\nAfter spending quite a bit of time trying to resolve this on more than one\noccassion, using rather complex and ulgy approaches, it turns out that just\ndelaying the hashing of the dentry until the create operation works fine.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "d78e53c89a820471837e0cb91fe36b7be1a7c9de",
      "tree": "7f015a0c2b3584f56e1864a7621ffa033d911ccd",
      "parents": [
        "93ba0881176ace057bc3111c8bdd717a23cb75ed"
      ],
      "author": {
        "name": "Sukadev Bhattiprolu",
        "email": "sukadev@us.ibm.com",
        "time": "Thu May 10 22:23:06 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Fri May 11 08:29:36 2007 -0700"
      },
      "message": "Fix some coding-style errors in autofs\n\nFix coding style errors (extra spaces, long lines) in autofs and autofs4 files\nbeing modified for container/pidspace issues.\n\nSigned-off-by: Sukadev Bhattiprolu \u003csukadev@us.ibm.com\u003e\nCc: Cedric Le Goater \u003cclg@fr.ibm.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: Serge Hallyn \u003cserue@us.ibm.com\u003e\nCc: \u003ccontainers@lists.osdl.org\u003e\nCc: Eric W. Biederman \u003cebiederm@xmission.com\u003e\nCc: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "e63340ae6b6205fef26b40a75673d1c9c0c8bb90",
      "tree": "8d3212705515edec73c3936bb9e23c71d34a7b41",
      "parents": [
        "04c9167f91e309c9c4ea982992aa08e83b2eb42e"
      ],
      "author": {
        "name": "Randy Dunlap",
        "email": "randy.dunlap@oracle.com",
        "time": "Tue May 08 00:28:08 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue May 08 11:15:07 2007 -0700"
      },
      "message": "header cleaning: don\u0027t include smp_lock.h when not used\n\nRemove includes of \u003clinux/smp_lock.h\u003e where it is not used/needed.\nSuggested by Al Viro.\n\nBuilds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,\nsparc64, and arm (all 59 defconfigs).\n\nSigned-off-by: 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": "c3724b129b5a1a1789a2dc5348685a236ae02479",
      "tree": "d664a2d672b62c9bde71992cdd8e1b7904f5e3d0",
      "parents": [
        "6d205f120547043de663315698dcf5f0eaa31b5c"
      ],
      "author": {
        "name": "Jeff Mahoney",
        "email": "jeffm@suse.com",
        "time": "Wed Apr 11 23:28:46 2007 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Thu Apr 12 15:31:42 2007 -0700"
      },
      "message": "[PATCH] autofs4: fix race in unhashed dentry code\n\nCommit f50b6f8691cae2e0064c499dd3ef3f31142987f0 introduced a race in\nautofs4 between autofs_lookup_unhashed() and autofs_dentry_release().\n\nautofs_dentry_release() ends up clearing the -\u003edentry and -\u003einode members\nof autofs_info before removing it from the rehash list.  The list is\nprotected by the rehash lock in both functions, but since\nautofs_dentry_release() starts tearing the autofs_info struct down before\nremoving it from the list, autofs_lookup_unhashed() can get a autofs_info\nwith a NULL dentry.\n\nThis patch moves the clearing of -\u003edentry and -\u003einode after the removal\nfrom the rehash list.\n\nSigned-off-by: Jeff Mahoney \u003cjeffm@suse.com\u003e\nAcked-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "c9ffec48487849bc277de662a6c29aad64653b99",
      "tree": "42f848ada18ac6d241a952e55c765305b4278e90",
      "parents": [
        "f50b6f8691cae2e0064c499dd3ef3f31142987f0"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Feb 20 13:58:10 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 20 17:10:15 2007 -0800"
      },
      "message": "[PATCH] autofs4: check for directory re-create in lookup\n\nThis problem was identified and fixed some time ago by Jeff Moyer but it fell\nthrough the cracks somehow.\n\nIt is possible that a user space application could remove and re-create a\ndirectory during a request.  To avoid returning a failure from lookup\nincorrectly when our current dentry is unhashed we need to check if another\npositive, hashed dentry matching this one exists and if so return it instead\nof a fail.\n\nSigned-off-by: Jeff Moyer \u003cjmoyer@redhat.com\u003e\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n"
    },
    {
      "commit": "f50b6f8691cae2e0064c499dd3ef3f31142987f0",
      "tree": "56c449af977772a42939afde5230c4809a057ffe",
      "parents": [
        "e8514478f63b95548a49576ba96b47edeb8596e0"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Tue Feb 20 13:58:10 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Tue Feb 20 17:10:15 2007 -0800"
      },
      "message": "[PATCH] autofs4: fix another race between mount and expire\n\nJeff Moyer has identified a race between mount and expire.\n\nWhat happens is that during an expire the situation can arise that a directory\nis removed and another lookup is done before the expire issues a completion\nstatus to the kernel module.  In this case, since the the lookup gets a new\ndentry, it doesn\u0027t know that there is an expire in progress and when it posts\nits mount request, matches the existing expire request and waits for its\ncompletion.  ENOENT is then returned to user space from lookup (as the dentry\npassed in is now unhashed) without having performed the mount request.\n\nThe solution used here is to keep track of dentrys in this unhashed state and\nreuse them, if possible, in order to preserve the flags.  Additionally, this\ninfrastructure will provide the framework for the reintroduction of caching of\nmount fails removed earlier in development.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nAcked-by: Jeff Moyer \u003cjmoyer@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": "754661f143e70d66eae6c48532ca245aa05dec0e",
      "tree": "c3ed0f7f96061931e497ed92d2b21294756b4831",
      "parents": [
        "9c2e08c592cd357a8330c34def1e8ecfdcf53275"
      ],
      "author": {
        "name": "Arjan van de Ven",
        "email": "arjan@linux.intel.com",
        "time": "Mon Feb 12 00:55:38 2007 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.linux-foundation.org",
        "time": "Mon Feb 12 09:48:46 2007 -0800"
      },
      "message": "[PATCH] mark struct inode_operations const 1\n\nMany struct inode_operations in the kernel can be \"const\".  Marking them const\nmoves these to the .rodata section, which avoids false sharing with potential\ndirty data.  In addition it\u0027ll catch accidental writes at compile time to\nthese shared resources.\n\nSigned-off-by: Arjan van de Ven \u003carjan@linux.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": "a4669ed8ed982dab494c5d4f2b32921e5a6531d8",
      "tree": "08104d07393d7301a59f1f82c93c63475899139b",
      "parents": [
        "81ed19b076f518e793283ccbd004fd0888877201"
      ],
      "author": {
        "name": "Josef \"Jeff\" Sipek",
        "email": "jsipek@cs.sunysb.edu",
        "time": "Fri Dec 08 02:36:46 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@woody.osdl.org",
        "time": "Fri Dec 08 08:28:43 2006 -0800"
      },
      "message": "[PATCH] autofs4: change uses of f_{dentry, vfsmnt} to use f_path\n\nChange all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the autofs4\nfilesystem.\n\nSigned-off-by: Josef \"Jeff\" Sipek \u003cjsipek@cs.sunysb.edu\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "ce71ec36840368b877fb63bd14c8e67ab62d08b1",
      "tree": "55ea3caaa339881dfd66d787b3dbbb964825d07a",
      "parents": [
        "17ff785691503f63ec648df82a7fdaece7695561"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Sep 30 23:29:06 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Oct 01 00:39:30 2006 -0700"
      },
      "message": "[PATCH] r/o bind mounts: monitor zeroing of i_nlink\n\nSome filesystems, instead of simply decrementing i_nlink, simply zero it\nduring an unlink operation.  We need to catch these in addition to the\ndecrement operations.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d8c76e6f45c111c32a4b3e50a2adc9210737b0d8",
      "tree": "25521b59d48c6d8c9aec1af54dbe5008ad4b215b",
      "parents": [
        "9a53c3a783c2fa9b969628e65695c11c3e51e673"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Sep 30 23:29:04 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Oct 01 00:39:30 2006 -0700"
      },
      "message": "[PATCH] r/o bind mount prepwork: inc_nlink() helper\n\nThis is mostly included for parity with dec_nlink(), where we will have some\nmore hooks.  This one should stay pretty darn straightforward for now.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "9a53c3a783c2fa9b969628e65695c11c3e51e673",
      "tree": "5a6115e18ee105246d46e3db3d5b07749d232f5b",
      "parents": [
        "aab520e2f6c80160cabd187a8d0292d1cec8ff68"
      ],
      "author": {
        "name": "Dave Hansen",
        "email": "haveblue@us.ibm.com",
        "time": "Sat Sep 30 23:29:03 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Oct 01 00:39:30 2006 -0700"
      },
      "message": "[PATCH] r/o bind mounts: unlink: monitor i_nlink\n\nWhen a filesystem decrements i_nlink to zero, it means that a write must be\nperformed in order to drop the inode from the filesystem.\n\nWe\u0027re shortly going to have keep filesystems from being remounted r/o between\nthe time that this i_nlink decrement and that write occurs.\n\nSo, add a little helper function to do the decrements.  We\u0027ll tie into it in a\nbit to note when i_nlink hits zero.\n\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nAcked-by: Christoph Hellwig \u003chch@lst.de\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "44938af6e08580514abce8bea23ae1c034ea0b1d",
      "tree": "98b23773af1a0a8482a09eb60f5dc4a732484d58",
      "parents": [
        "be3ca7fecb1a9903c6253f49aec0af2a0f3a04e4"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Sep 29 02:00:54 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 29 09:18:18 2006 -0700"
      },
      "message": "[PATCH] autofs4: pending flag not cleared on mount fail\n\nDuring testing I\u0027ve found that the mount pending flag can be left set at\nexit from autofs4_lookup after a failed mount request.  This shouldn\u0027t be\nallowed to happen and causes incorrect error returns.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "be3ca7fecb1a9903c6253f49aec0af2a0f3a04e4",
      "tree": "128cc5b9e66dbd426f7200c67eae325ab13cfd5c",
      "parents": [
        "5b160f5ecd2f1b6df2e0015dc1f319c8ef803d62"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Fri Sep 29 02:00:53 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Sep 29 09:18:18 2006 -0700"
      },
      "message": "[PATCH] autofs4: autofs4_follow_link false negative fix\n\nThe check for an empty directory in the autofs4_follow_link method fails\noccassionally due to old dentrys.  We had the same problem\nautofs4_revalidate ages ago.  I thought we wouldn\u0027t need this in\nautofs4_follow_link, silly me.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "bcdc5e019d9f525a9f181a7de642d3a9c27c7610",
      "tree": "c2a93b8456095b260bee2be6e169c116f4b0be84",
      "parents": [
        "1183dc943cae8b0fddca0b310c26052b2355e04b"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Wed Sep 27 01:50:44 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Sep 27 08:26:17 2006 -0700"
      },
      "message": "[PATCH] autofs4 needs to force fail return revalidate\n\nFor a long time now I have had a problem with not being able to return a\nlookup failure on an existsing directory.  In autofs this corresponds to a\nmount failure on a autofs managed mount entry that is browsable (and so the\nmount point directory exists).\n\nWhile this problem has been present for a long time I\u0027ve avoided resolving\nit because it was not very visible.  But now that autofs v5 has \"mount and\nexpire on demand\" of nested multiple mounts, such as is found when mounting\nan export list from a server, solving the problem cannot be avoided any\nlonger.\n\nI\u0027ve tried very hard to find a way to do this entirely within the autofs4\nmodule but have not been able to find a satisfactory way to achieve it.\n\nSo, I need to propose a change to the VFS.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "a5370553952a9a414860d878b67c49eff11313bd",
      "tree": "8a893bd5e6519fbb7e1b46506096607be7093a50",
      "parents": [
        "6aff5cb8ec270db569800b1bb59bd20003a76f07"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon May 15 09:43:51 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon May 15 11:20:54 2006 -0700"
      },
      "message": "[PATCH] autofs4: NFY_NONE wait race fix\n\nThis patch fixes two problems.\n\nFirst, the comparison of entries in the waitq.c was incorrect.\n\nSecond, the NFY_NONE check was incorrect. The test of whether the dentry\nis mounted if ineffective, for example, if an expire fails then we could\nwait forever on a non existant expire. The bug was identified by Jeff\nMoyer.\n\nThe patch changes autofs4 to wait on expires only as this is all that\u0027s\nneeded.  If there is no existing wait when autofs4_wait is call with a type\nof NFY_NONE it delays until either a wait appears or the the expire flag is\ncleared.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "4b6f5d20b04dcbc3d888555522b90ba6d36c4106",
      "tree": "420f271eaef7d3def7d4433b151c3cb6d7a54770",
      "parents": [
        "99ac48f54a91d02140c497edc31dc57d4bc5c85d"
      ],
      "author": {
        "name": "Arjan van de Ven",
        "email": "arjan@infradead.org",
        "time": "Tue Mar 28 01:56:42 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Mar 28 09:16:06 2006 -0800"
      },
      "message": "[PATCH] Make most file operations structs in fs/ const\n\nThis is a conversion to make the various file_operations structs in fs/\nconst.  Basically a regexp job, with a few manual fixups\n\nThe goal is both to increase correctness (harder to accidentally write to\nshared datastructures) and reducing the false sharing of cachelines with\nthings that get dirty in .data (while .rodata is nicely read only and thus\ncache clean)\n\nSigned-off-by: Arjan van de Ven \u003carjan@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "871f94344cea36b2ce91231f442f9f9298529712",
      "tree": "951865804407af1afcd7e84f1c152236302bb7f4",
      "parents": [
        "3370c74b2e147169d5bba6665e03d3281f5795ed"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:58 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:41 2006 -0800"
      },
      "message": "[PATCH] autofs4: follow_link missing functionality\n\nThis functionality is also need for operation of autofs v5 direct mounts.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "34ca959cfc15cf09ad4da4f31ab034691e51af78",
      "tree": "83bbe0a2b94ca58f39c65b1e605f44d421b9564b",
      "parents": [
        "051d381259eb57d6074d02a6ba6e90e744f1a29f"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:54 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:40 2006 -0800"
      },
      "message": "[PATCH] autofs4: add v5 follow_link mount trigger method\n\nThis patch adds a follow_link inode method for the root of an autofs direct\nmount trigger.  It also adds the corresponding mount options and updates the\nshow_mount method.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nCc: Al Viro \u003cviro@ftp.linux.org.uk\u003e\nCc: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e3474a8eb38e48dea6690d1fabd75f3c7fd2f93f",
      "tree": "0eb85dea5d7ae7bab9e22b139f5757c67294402e",
      "parents": [
        "90a59c7cf5dd68b41ffab61dd30eba1ef5746e66"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:51 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:40 2006 -0800"
      },
      "message": "[PATCH] autofs4: change may_umount* functions to boolean\n\nChange the functions may_umount and may_umount_tree to boolean functions to\naid code readability.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "90a59c7cf5dd68b41ffab61dd30eba1ef5746e66",
      "tree": "d8ba682efbeaf2153aea6484a822a0ce433880ed",
      "parents": [
        "e77fbddf77c071a5735a4bc63a30649bd64baf14"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:50 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:40 2006 -0800"
      },
      "message": "[PATCH] autofs4: rename simple_empty_nolock function\n\nRename the function simple_empty_nolock to __simple_empty in line with kernel\nnaming conventions.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "862b110f0132401e422783bf68521ade3dc67578",
      "tree": "4cdf38bfb51fb6abba7ab99dc9d406325f0fb35d",
      "parents": [
        "e0a7aae94030b878601eb67686b696de4a3764f0"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:48 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:39 2006 -0800"
      },
      "message": "[PATCH] autofs4: remove update_atime unused function\n\nRemove the update of i_atime from autofs4 in favour of having VFS update it.\ni_atime is never used for expire in autofs4.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e0a7aae94030b878601eb67686b696de4a3764f0",
      "tree": "721a08b9c124e5e9efe36bec1b501f7999657793",
      "parents": [
        "1aff3c8b0511b5bb54acf7859e0c6ec9ae7287a9"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:47 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:39 2006 -0800"
      },
      "message": "[PATCH] autofs4: expire mounts that hold no (extra) references only\n\nAlter the expire semantics that define how \"busyness\" is determined.\nCurrently a last_used counter is updated on every revalidate from processes\nother than the mount owner process group.\n\nThis patch changes that so that an expire candidate is busy only if it has a\nreference count greater than the expected minimum, such as when there is an\nopen file or working directory in use.\n\nThis method is the only way that busyness can be established for direct mounts\nwithin the new implementation.  For consistency the expire semantic is made\nthe same for all mounts.\n\nA side effect of the patch is that mounts which remain mounted unessessarily\nin the presence of some GUI programs that scan the filesystem should now\nexpire.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1aff3c8b0511b5bb54acf7859e0c6ec9ae7287a9",
      "tree": "be50f4c89a14240b568010da1b0ce3c182352afc",
      "parents": [
        "1ce12bad85863478619688c0c7363f93a9e5edb8"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:46 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:39 2006 -0800"
      },
      "message": "[PATCH] autofs4: fix false negative return from expire\n\nFix the case where an expire returns busy on a tree mount when it is in fact\nnot busy.  This case was overlooked when the patch to prevent the expiring\naway of \"scaffolding\" directories for tree mounts was applied.\n\nThe problem arises when a tree of mounts is a member of a map with other keys.\n The current logic will not expire the tree if any other mount in the map is\nbusy.  The solution is to maintain a \"minimum\" use count for each autofs\ndentry and compare this to the actual dentry usage count during expire.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "2d753e62b87ab2fc72bb4ff5153791d32ff9c08e",
      "tree": "d10660a7ad08973679c3cfa66cd2b8eedae5afaa",
      "parents": [
        "f360ce3be466d50de153b001b24561ca7593042b"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:44 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:39 2006 -0800"
      },
      "message": "[PATCH] autofs4: can\u0027t mount due to mount point dir not empty\n\nAddresse a problem where stale dentrys stop mounts from happening.\n\nWhen a mount point directory is pre-created and a non-existent entry within it\nis requested a dentry ends up being created within the mount point directory\nwhich stops future mounts.  The problem is solved by ignoring negative,\nunhashed dentrys in the mount point d_subdirs list.\n\nAdditionally the apparent cacheing of -ENOENT returns from requests is\nremoved.  The test on d_time is a tautology and d_time is not initialised and\nhas an unexpected value.  In short it doesn\u0027t do what it\u0027s meant to.\n\nThe cacheing of failed requests to the daemon is important and will be\nfollowed up later.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "f360ce3be466d50de153b001b24561ca7593042b",
      "tree": "cad660d0143e02d3e949cd7c9483ea59da41b0ca",
      "parents": [
        "718c604a28e35848754a65b839e4877ec34b2fca"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:43 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:39 2006 -0800"
      },
      "message": "[PATCH] autofs4: use libfs routines for readdir\n\nChange readdir routines to use the cursor based routines in libfs.c.  This\nremoves reliance on old readdir code from 2.4 and should improve efficiency of\nreaddir in autofs4.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "718c604a28e35848754a65b839e4877ec34b2fca",
      "tree": "df5a73b89f7e081d646d0c8df8a6aa6be89e1e76",
      "parents": [
        "86c79cbcee7d617c5aaf9b4f7e6cc093397d3451"
      ],
      "author": {
        "name": "Ian Kent",
        "email": "raven@themaw.net",
        "time": "Mon Mar 27 01:14:42 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon Mar 27 08:44:39 2006 -0800"
      },
      "message": "[PATCH] autofs4: lookup white space cleanup\n\nWhitespace and formating changes to lookup code.\n\nSigned-off-by: Ian Kent \u003craven@themaw.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    }
  ],
  "next": "faf3a98918aa5f14a29e0d246e194be58b9357f0"
}