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Liu Bo 4cb13e5d6e Btrfs: fix recursive defragment with autodefrag option 
$ mkfs.btrfs disk
$ mount disk /mnt -o autodefrag
$ dd if=/dev/zero of=/mnt/foobar bs=4k count=10 2>/dev/null && sync
$ for i in `seq 9 -2 0`; do dd if=/dev/zero of=/mnt/foobar bs=4k count=1 \
  seek=$i conv=notrunc 2> /dev/null; done && sync

then we'll get to defrag "foobar" again and again.
So does option "-o autodefrag,compress".

Reasons:
When the cleaner kthread gets to fetch inodes from the defrag tree and defrag
them, it will dirty pages and submit them, this will comes to another DATA COW
where the processing inode will be inserted to the defrag tree again.

This patch sets a rule for COW code, i.e. insert an inode when we're really
going to make some defragments.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2012-03-29 09:57:45 -04:00
..
9p
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
2012-01-10 15:09:01 -08:00
adfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
affs
affs: propagate umode_t
2012-01-03 22:55:04 -05:00
afs
afs: Remote abort can cause BUG in rxrpc code
2012-03-16 17:01:41 -07:00
autofs4
autofs: work around unhappy compat problem on x86-64
2012-02-25 12:10:27 -08:00
befs
vfs: fix the stupidity with i_dentry in inode destructors
2012-01-03 22:52:40 -05:00
bfs
switch ->create() to umode_t
2012-01-03 22:54:53 -05:00
btrfs
Btrfs: fix recursive defragment with autodefrag option
2012-03-29 09:57:45 -04:00
cachefiles
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2012-02-02 15:47:33 -08:00
cifs
CIFS: Do not kmalloc under the flocks spinlock
2012-03-06 21:50:15 -06:00
coda
coda: switch coda_cnode_make() to sane API as well, clean coda_lookup()
2012-01-10 11:13:16 -05:00
configfs
configfs: convert to umode_t
2012-01-03 22:54:57 -05:00
cramfs
Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z
2012-01-06 23:15:54 -05:00
debugfs
kernel-doc: fix new warnings in debugfs
2012-01-24 10:47:41 -08:00
devpts
devpts: fix double-free on mount failure
2012-01-08 20:19:03 -05:00
dlm
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm
2012-01-10 14:55:55 -08:00
ecryptfs
ecryptfs: fix printk format warning for size_t
2012-02-28 16:55:30 -08:00
efs
vfs: fix the stupidity with i_dentry in inode destructors
2012-01-03 22:52:40 -05:00
exofs
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
2012-01-09 12:51:01 -08:00
exportfs
…
ext2
ext2: protect inode changes in the SETVERSION and SETFLAGS ioctls
2012-01-11 13:39:02 +01:00
ext3
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2012-01-09 12:51:21 -08:00
ext4
Merge branch 'for_linus' into for_linus_merged
2012-01-10 11:54:07 -05:00
fat
Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2012-01-09 12:09:47 -08:00
freevxfs
fs: propagate umode_t, misc bits
2012-01-03 22:55:10 -05:00
fscache
FS-Cache: Fix __fscache_uncache_all_inode_pages()'s outer loop
2011-07-21 10:59:16 -07:00
fuse
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
2012-01-12 12:39:21 -08:00
gfs2
GFS2: Read resource groups on mount
2012-02-28 09:52:39 +00:00
hfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
hfsplus
hfsplus: creation of hidden dir on mount can fail
2012-01-10 17:48:52 -05:00
hostfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
hpfs
switch ->mknod() to umode_t
2012-01-03 22:54:54 -05:00
hppfs
vfs: for usbfs, etc. internal vfsmounts ->mnt_sb->s_root == ->mnt_root
2012-01-03 22:52:41 -05:00
hugetlbfs
mm: compaction: introduce sync-light migration for use by compaction
2012-01-12 20:13:09 -08:00
isofs
isofs: inode leak on mount failure
2012-01-09 10:48:11 -05:00
jbd
jbd: Issue cache flush after checkpointing
2012-01-11 13:36:57 +01:00
jbd2
Merge branch 'for_linus' into for_linus_merged
2012-01-10 11:54:07 -05:00
jffs2
jffs2: do not initialize variable unnecessarily
2012-01-11 09:53:51 +00:00
jfs
Merge branch 'pm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2012-01-08 13:10:57 -08:00
lockd
module_param: make bool parameters really bool (drivers & misc)
2012-01-13 09:32:20 +10:30
logfs
mtd: fix merge conflict resolution breakage
2012-02-01 11:10:24 -08:00
minix
Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-01-08 12:19:57 -08:00
ncpfs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
nfs
NFSv4: fix server_scope memory leak
2012-02-17 17:34:03 -05:00
nfs_common
…
nfsd
Merge branch 'for-3.3' of git://linux-nfs.org/~bfields/linux
2012-01-14 12:26:41 -08:00
nilfs2
nilfs2: fix NULL pointer dereference in nilfs_load_super_block()
2012-03-16 17:14:44 -07:00
nls
NLS: raname "maxlen" to "maxout" in UTF conversion routines
2011-11-26 19:58:47 -08:00
notify
fsnotify: don't BUG in fsnotify_destroy_mark()
2012-01-14 18:01:42 -08:00
ntfs
NTFS: Correct two spelling errors "dealocate" to "deallocate" in mft.c.
2012-02-24 09:17:09 +00:00
ocfs2
ocfs2: deal with wraparounds of i_nlink in ocfs2_rename()
2012-02-13 20:45:39 -05:00
omfs
omfs: propagate umode_t
2012-01-03 22:55:01 -05:00
openpromfs
vfs: fix the stupidity with i_dentry in inode destructors
2012-01-03 22:52:40 -05:00
proc
Fix race in process_vm_rw_core
2012-02-02 12:55:17 -08:00
pstore
pstore: gracefully handle NULL pstore_info functions
2011-11-18 13:49:00 -08:00
qnx4
qnx4: don't leak ->BitMap on late failure exits
2012-01-19 13:54:36 -05:00
quota
quota: Fix deadlock with suspend and quotas
2012-02-13 20:45:39 -05:00
ramfs
pohmelfs: propagate umode_t
2012-01-03 22:55:07 -05:00
reiserfs
reiserfs: don't lock root inode searching
2012-01-10 16:30:54 -08:00
romfs
MTD pull for 3.3
2012-01-10 13:45:22 -08:00
squashfs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-next
2012-01-13 10:34:57 -08:00
sysfs
sysfs: Complain bitterly about attempts to remove files from nonexistent directories.
2012-01-24 12:12:32 -08:00
sysv
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
2012-01-06 23:16:53 -05:00
ubifs
UBIFS: fix non-debug configuration build
2012-01-15 13:46:02 +02:00
udf
udf: Fix deadlock in udf_release_file()
2012-03-10 16:05:38 -05:00
ufs
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
xfs
xfs: make inode quota check more general
2012-02-21 10:12:43 -06:00
aio.c
aio: fix the "too late munmap()" race
2012-03-09 18:59:59 -08:00
anon_inodes.c
vfs: dont chain pipe/anon/socket on superblock s_inodes list
2011-07-26 12:57:09 -04:00
attr.c
switch is_sxid() to umode_t
2012-01-03 22:55:11 -05:00
bad_inode.c
switch ->mknod() to umode_t
2012-01-03 22:54:54 -05:00
binfmt_aout.c
aout: move setup_arg_pages() prior to reading/mapping the binary
2012-03-05 13:51:32 -08:00
binfmt_elf_fdpic.c
consolidate BINPRM_FLAGS_ENFORCE_NONDUMP handling
2011-07-20 01:43:10 -04:00
binfmt_elf.c
regset: Prevent null pointer reference on readonly regsets
2012-03-02 11:38:15 -08:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
2012-01-06 23:16:53 -05:00
binfmt_script.c
…
binfmt_som.c
…
bio-integrity.c
fs: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros
2011-10-31 19:30:31 -04:00
bio.c
bio: don't overflow in bio_get_nr_vecs()
2012-02-08 22:07:18 +01:00
block_dev.c
block: Fix NULL pointer dereference in sd_revalidate_disk
2012-03-02 10:38:33 +01:00
buffer.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
char_dev.c
char_dev.c: fix up some whitespace errors
2011-12-13 11:18:17 -08:00
compat_binfmt_elf.c
…
compat_ioctl.c
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
2012-01-15 12:49:56 -08:00
compat.c
vfs: fix compat_sys_stat() handling of overflows in st_nlink
2012-02-13 20:45:39 -05:00
dcache.c
vfs: move dentry_cmp from <linux/dcache.h> to fs/dcache.c
2012-03-04 15:51:42 -08:00
dcookies.c
…
direct-io.c
Restore direct_io / truncate locking API
2012-02-23 15:56:21 -08:00
drop_caches.c
…
eventfd.c
…
eventpoll.c
Don't limit non-nested epoll paths
2012-03-18 12:25:04 -07:00
exec.c
coredump_wait: don't call complete_vfork_done()
2012-03-05 15:49:42 -08:00
fcntl.c
…
fhandle.c
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
2012-01-06 23:16:53 -05:00
fifo.c
…
file_table.c
vfs: prevent remount read-only if pending removes
2012-01-06 23:20:13 -05:00
file.c
…
filesystems.c
vfs: convert fs_supers to hlist
2012-01-03 22:52:39 -05:00
fs_struct.c
…
fs-writeback.c
writeback: fix NULL bdi->dev in trace writeback_single_inode
2012-02-01 16:53:40 +08:00
generic_acl.c
switch posix_acl_equiv_mode() to umode_t *
2011-08-01 02:10:06 -04:00
inode.c
restore smp_mb() in unlock_new_inode()
2012-03-10 17:07:28 -05:00
internal.h
vfs: protect remounting superblock read-only
2012-01-06 23:20:12 -05:00
ioctl.c
vfs: fix up ENOIOCTLCMD error handling
2012-01-05 15:40:12 -08:00
ioprio.c
block: strip out locking optimization in put_io_context()
2012-02-07 07:51:30 +01:00
Kconfig
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
2012-01-09 12:51:01 -08:00
Kconfig.binfmt
fs: binfmt_elf: create Kconfig variable for PIE randomization
2012-01-10 16:30:51 -08:00
libfs.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
locks.c
vfs: fix handling of lock allocation failure in lease-break case
2011-12-26 10:25:26 -08:00
Makefile
Merge branches 'vfsmount-guts', 'umode_t' and 'partitions' into Z
2012-01-06 23:15:54 -05:00
mbcache.c
…
mount.h
vfs: keep list of mounts for each superblock
2012-01-06 23:20:12 -05:00
mpage.c
fs: remove unneeded plug in mpage_readpages()
2012-01-12 09:19:54 +01:00
namei.c
vfs: fix return value from do_last()
2012-03-10 17:05:30 -05:00
namespace.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-01-08 13:21:22 -08:00
no-block.c
…
open.c
switch security_path_chmod() to struct path *
2012-01-06 23:16:53 -05:00
pipe.c
pipe: fail cleanly when root tries F_SETPIPE_SZ with big size
2012-01-12 20:13:04 -08:00
pnode.c
vfs: switch pnode.h macros to struct mount *
2012-01-03 22:57:11 -05:00
pnode.h
vfs: switch pnode.h macros to struct mount *
2012-01-03 22:57:11 -05:00
posix_acl.c
vfs: pass all mask flags check_acl and posix_acl_permission
2011-10-28 14:58:54 +02:00
proc_namespace.c
vfs: switch ->show_options() to struct dentry *
2012-01-06 23:19:54 -05:00
read_write.c
Cross Memory Attach
2011-10-31 17:30:44 -07:00
read_write.h
…
readdir.c
…
select.c
sys_poll: fix incorrect type for 'timeout' parameter
2012-02-21 17:24:20 -08:00
seq_file.c
constify seq_file stuff
2012-01-03 22:52:40 -05:00
signalfd.c
epoll: ep_unregister_pollwait() can use the freed pwq->whead
2012-02-24 11:42:50 -08:00
splice.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
stack.c
filesystems: add set_nlink()
2011-11-02 12:53:43 +01:00
stat.c
readlinkat: ensure we return ENOENT for the empty pathname for normal lookups
2011-11-02 12:53:42 +01:00
statfs.c
vfs: new helper - vfs_ustat()
2012-01-03 22:53:07 -05:00
super.c
vfs: Provide function to get superblock and wait for it to thaw
2012-02-13 20:45:38 -05:00
sync.c
fs: move code out of buffer.c
2012-01-03 22:54:07 -05:00
timerfd.c
…
utimes.c
…
xattr_acl.c
…
xattr.c
vfs: mnt_drop_write_file()
2012-01-03 22:52:40 -05:00