f2fs: Update to proper 3.4 support
http://git.kernel.org/cgit/linux/kernel/git/jaegeuk/f2fs.git/log/?h=linux-3.4
Change-Id: Ica17871e847d4807c7ef24ea77dd4bff5451f5c7
Conflicts:
fs/f2fs/f2fs.h
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index ada9e02..96c1af2 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -51,6 +51,7 @@
Opt_disable_ext_identify,
Opt_inline_xattr,
Opt_inline_data,
+ Opt_flush_merge,
Opt_err,
};
@@ -67,6 +68,7 @@
{Opt_disable_ext_identify, "disable_ext_identify"},
{Opt_inline_xattr, "inline_xattr"},
{Opt_inline_data, "inline_data"},
+ {Opt_flush_merge, "flush_merge"},
{Opt_err, NULL},
};
@@ -334,6 +336,9 @@
case Opt_inline_data:
set_opt(sbi, INLINE_DATA);
break;
+ case Opt_flush_merge:
+ set_opt(sbi, FLUSH_MERGE);
+ break;
default:
f2fs_msg(sb, KERN_ERR,
"Unrecognized mount option \"%s\" or missing value",
@@ -354,7 +359,7 @@
init_once((void *) fi);
- /* Initilize f2fs-specific inode info */
+ /* Initialize f2fs-specific inode info */
fi->vfs_inode.i_version = 1;
atomic_set(&fi->dirty_dents, 0);
fi->i_current_depth = 1;
@@ -461,6 +466,22 @@
return 0;
}
+static int f2fs_freeze(struct super_block *sb)
+{
+ int err;
+
+ if (f2fs_readonly(sb))
+ return 0;
+
+ err = f2fs_sync_fs(sb, 1);
+ return err;
+}
+
+static int f2fs_unfreeze(struct super_block *sb)
+{
+ return 0;
+}
+
static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
@@ -493,7 +514,7 @@
{
struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
- if (!(root->d_sb->s_flags & MS_RDONLY) && test_opt(sbi, BG_GC))
+ if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC))
seq_printf(seq, ",background_gc=%s", "on");
else
seq_printf(seq, ",background_gc=%s", "off");
@@ -521,6 +542,8 @@
seq_puts(seq, ",disable_ext_identify");
if (test_opt(sbi, INLINE_DATA))
seq_puts(seq, ",inline_data");
+ if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE))
+ seq_puts(seq, ",flush_merge");
seq_printf(seq, ",active_logs=%u", sbi->active_logs);
return 0;
@@ -571,6 +594,10 @@
struct f2fs_sb_info *sbi = F2FS_SB(sb);
struct f2fs_mount_info org_mount_opt;
int err, active_logs;
+ bool need_restart_gc = false;
+ bool need_stop_gc = false;
+
+ sync_filesystem(sb);
/*
* Save the old mount options in case we
@@ -586,9 +613,9 @@
/*
* Previous and new state of filesystem is RO,
- * so no point in checking GC conditions.
+ * so skip checking GC and FLUSH_MERGE conditions.
*/
- if ((sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY))
+ if (f2fs_readonly(sb) && (*flags & MS_RDONLY))
goto skip;
/*
@@ -600,18 +627,39 @@
if (sbi->gc_thread) {
stop_gc_thread(sbi);
f2fs_sync_fs(sb, 1);
+ need_restart_gc = true;
}
} else if (test_opt(sbi, BG_GC) && !sbi->gc_thread) {
err = start_gc_thread(sbi);
if (err)
goto restore_opts;
+ need_stop_gc = true;
+ }
+
+ /*
+ * We stop issue flush thread if FS is mounted as RO
+ * or if flush_merge is not passed in mount option.
+ */
+ if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) {
+ destroy_flush_cmd_control(sbi);
+ } else if (test_opt(sbi, FLUSH_MERGE) && !SM_I(sbi)->cmd_control_info) {
+ err = create_flush_cmd_control(sbi);
+ if (err)
+ goto restore_gc;
}
skip:
/* Update the POSIXACL Flag */
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
(test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0);
return 0;
-
+restore_gc:
+ if (need_restart_gc) {
+ if (start_gc_thread(sbi))
+ f2fs_msg(sbi->sb, KERN_WARNING,
+ "background gc thread is stop");
+ } else if (need_stop_gc) {
+ stop_gc_thread(sbi);
+ }
restore_opts:
sbi->mount_opt = org_mount_opt;
sbi->active_logs = active_logs;
@@ -628,6 +676,8 @@
.evict_inode = f2fs_evict_inode,
.put_super = f2fs_put_super,
.sync_fs = f2fs_sync_fs,
+ .freeze_fs = f2fs_freeze,
+ .unfreeze_fs = f2fs_unfreeze,
.statfs = f2fs_statfs,
.remount_fs = f2fs_remount,
};
@@ -900,11 +950,11 @@
sbi->por_doing = false;
spin_lock_init(&sbi->stat_lock);
- mutex_init(&sbi->read_io.io_mutex);
+ init_rwsem(&sbi->read_io.io_rwsem);
sbi->read_io.sbi = sbi;
sbi->read_io.bio = NULL;
for (i = 0; i < NR_PAGE_TYPE; i++) {
- mutex_init(&sbi->write_io[i].io_mutex);
+ init_rwsem(&sbi->write_io[i].io_rwsem);
sbi->write_io[i].sbi = sbi;
sbi->write_io[i].bio = NULL;
}
@@ -1031,7 +1081,7 @@
* If filesystem is not mounted as read-only then
* do start the gc_thread.
*/
- if (!(sb->s_flags & MS_RDONLY)) {
+ if (!f2fs_readonly(sb)) {
/* After POR, we can run background GC thread.*/
err = start_gc_thread(sbi);
if (err)