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0393afea31
linux/fs/ocfs2
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Xiaowei.Hu 0393afea31 ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2 
With indexed_dir enabled, ocfs2 maintains a list of dirblocks having
space.

The credit calculation in ocfs2_link_credits() did not correctly account
for adding an entry that exactly fills a dirblock that triggers removing
that dirblock by changing the pointer in the previous block in the list.
The credit calculation did not account for that previous block.

To expose, do:

mkfs.ocfs2 -b 512 -M local /dev/sdX
mount /dev/sdX /ocfs2
mkdir /ocfs2/linkdir
touch /ocfs2/linkdir/file1
for i in `seq 1 29` ; do link /ocfs2/linkdir/file1
/ocfs2/linkdir/linklinklinklinklinklink$i; done
rm -f /ocfs2/linkdir/linklinklinklinklinklink10
sleep 8
link /ocfs2/linkdir/file1
/ocfs2/linkdir/linklinklinklinklinklinkaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Note:
The link names have been crafted for a 512 byte blocksize. Reproducing
with a larger blocksize will require longer (or more) links. The sleep
is important. We want jbd2 to commit the transaction so that the missing
block does not piggy back on account of the previous transaction.

Signed-off-by: XiaoweiHu <xiaowei.hu at oracle.com>
Reviewed-by: WengangWang <wen.gang.wang at oracle.com>
Reviewed-by: Sunil.Mushran <sunil.mushran at oracle.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
2011-11-17 01:46:48 -08:00
..
cluster ocfs2/cluster: Add new function o2net_fill_node_map() 2011-07-24 10:32:54 -07:00
dlm fs/ocfs2/dlm/dlmlock.c: free kmem_cache_zalloc'd data using kmem_cache_free 2011-11-17 01:46:46 -08:00
dlmfs ocfs2: change incorrect 'extern' keyword to 'static' in dlmfs 2011-05-23 23:59:40 -07:00
acl.c ->permission() sanitizing: don't pass flags to ->check_acl() 2011-07-20 01:43:21 -04:00
acl.h ->permission() sanitizing: don't pass flags to ->check_acl() 2011-07-20 01:43:21 -04:00
alloc.c ocfs2: Commit transactions in error cases -v2 2011-11-17 01:46:47 -08:00
alloc.h ocfs2: Add ocfs2_trim_fs for SSD trim support. 2011-05-23 23:37:18 -07:00
aops.c Merge branch 'mw-3.1-jul25' of git://oss.oracle.com/git/smushran/linux-2.6 into ocfs2-fixes 2011-08-21 21:02:57 -07:00
aops.h ocfs2: serialize unaligned aio 2011-07-28 02:07:16 -07:00
blockcheck.c ocfs2: Fix metaecc error messages 2010-09-08 14:25:53 +08:00
blockcheck.h
buffer_head_io.c ocfs2: Remove masklog ML_UPTODATE. 2011-02-24 16:22:20 +08:00
buffer_head_io.h ocfs2: Take the inode out of the metadata read/write paths. 2009-09-04 16:07:48 -07:00
dcache.c ocfs2: fix d_revalidate oopsen on NFS exports 2011-03-10 03:45:07 -05:00
dcache.h Track negative entries v3 2010-09-10 09:18:15 -07:00
dir.c ocfs2: make direntry invalid when deleting it 2011-11-17 01:46:46 -08:00
dir.h
dlmglue.c ocfs2: Bugfix for hard readonly mount 2011-05-31 19:03:44 -07:00
dlmglue.h ocfs2: Fix lockdep warning in reflink. 2010-09-10 09:19:06 -07:00
export.c exportfs: Return the minimum required handle size 2011-03-14 09:15:28 -04:00
export.h
extent_map.c ocfs2: Implement llseek() 2011-07-25 14:58:15 -07:00
extent_map.h ocfs2: Implement llseek() 2011-07-25 14:58:15 -07:00
file.c Merge branch 'mw-3.1-jul25' of git://oss.oracle.com/git/smushran/linux-2.6 into ocfs2-fixes 2011-08-21 21:02:57 -07:00
file.h ->permission() sanitizing: don't pass flags to ->permission() 2011-07-20 01:43:24 -04:00
heartbeat.c ocfs2: Remove mlog(0) from fs/ocfs2/heartbeat.c 2011-02-23 21:17:39 +08:00
heartbeat.h
inode.c Fix common misspellings 2011-03-31 11:26:23 -03:00
inode.h ocfs2: serialize unaligned aio 2011-07-28 02:07:16 -07:00
ioctl.c ocfs2: Commit transactions in error cases -v2 2011-11-17 01:46:47 -08:00
ioctl.h Ocfs2: Move ocfs2 ioctl definitions from ocfs2_fs.h to newly added ocfs2_ioctl.h 2010-03-02 14:10:20 -08:00
journal.c ocfs2: Add comment about orphan scanning 2011-07-24 10:35:54 -07:00
journal.h ocfs2: Add a missing journal credit in ocfs2_link_credits() -v2 2011-11-17 01:46:48 -08:00
Kconfig ocfs2: Make OCFS2_FS depend on CONFIGFS_FS 2011-01-16 21:22:40 +00:00
localalloc.c ocfs2: Remove EXIT from masklog. 2011-03-07 16:43:21 +08:00
localalloc.h ocfs2: increase the default size of local alloc windows 2010-05-05 18:18:07 -07:00
locks.c ocfs2: remove INODE from unused files. 2011-02-21 11:18:23 +08:00
locks.h
Makefile Ocfs2/move_extents: Add basic framework and source files for extent moving. 2011-05-25 15:17:08 +08:00
mmap.c ocfs2: Fix ocfs2_page_mkwrite() 2011-07-24 10:36:54 -07:00
mmap.h
move_extents.c ocfs2: checking the wrong variable in ocfs2_move_extent() 2011-05-31 19:03:44 -07:00
move_extents.h Ocfs2/move_extents: move/defrag extents within a certain range. 2011-05-25 15:17:12 +08:00
namei.c kill check_acl callback of generic_permission() 2011-07-20 01:43:16 -04:00
namei.h ocfs2: Create reflinked file in orphan dir. 2009-09-22 20:09:48 -07:00
ocfs1_fs_compat.h
ocfs2_fs.h Revert wrong fixes for common misspellings 2011-04-26 23:31:11 -07:00
ocfs2_ioctl.h Ocfs2/move_extents: Adding new ioctl code 'OCFS2_IOC_MOVE_EXT' to ocfs2. 2011-05-25 15:17:08 +08:00
ocfs2_lockid.h ocfs2: Add new refcount tree lock resource in dlmglue. 2009-09-22 20:09:28 -07:00
ocfs2_lockingver.h ocfs2_dlmfs: Enable the use of user cluster stacks. 2010-02-26 15:41:18 -08:00
ocfs2_trace.h ocfs2: Add trace event for trim. 2011-05-23 23:37:20 -07:00
ocfs2.h ocfs2: use proper little-endian bitops 2011-05-31 19:03:45 -07:00
quota_global.c Fix common misspellings 2011-03-31 11:26:23 -03:00
quota_local.c ocfs2: Clean up messages in the fs 2011-07-24 10:34:54 -07:00
quota.h ocfs2: use system_wq instead of ocfs2_quota_wq 2011-02-01 11:42:42 +01:00
refcounttree.c new helpers: kern_path_create/user_path_create 2011-07-20 01:44:05 -04:00
refcounttree.h Ocfs2/refcounttree: Publicize couple of funcs from refcounttree.c 2011-05-25 15:17:08 +08:00
reservations.c ocfs2: Remove masklog ML_RESERVATIONS. 2011-02-23 22:10:56 +08:00
reservations.h Fix common misspellings 2011-03-31 11:26:23 -03:00
resize.c ocfs2: Remove mlog(0) from fs/ocfs2/suballoc.c 2011-02-22 08:24:01 +08:00
resize.h
slot_map.c ocfs2: Clean up messages in the fs 2011-07-24 10:34:54 -07:00
slot_map.h
stack_o2cb.c ocfs2/cluster: Cluster up now includes network connections too 2011-07-24 10:33:54 -07:00
stack_user.c ocfs2_connection_find() returns pointer to bad structure 2010-11-18 15:41:41 -08:00
stackglue.c ocfs2_dlmfs: Enable the use of user cluster stacks. 2010-02-26 15:41:18 -08:00
stackglue.h Fix common misspellings 2011-03-31 11:26:23 -03:00
suballoc.c Fix common misspellings 2011-03-31 11:26:23 -03:00
suballoc.h ocfs2: allow return of new inode block location before allocation of the inode 2010-09-08 14:25:59 +08:00
super.c ocfs2: send correct UUID to cleancache initialization 2011-11-17 01:46:48 -08:00
super.h ocfs2: Wrap signal blocking in void functions. 2010-05-10 11:50:10 -07:00
symlink.c ocfs2: Remove EXIT from masklog. 2011-03-07 16:43:21 +08:00
symlink.h
sysfile.c ocfs2: Remove mlog(0) from fs/ocfs2/file.c 2011-02-22 22:14:41 +08:00
sysfile.h
uptodate.c ocfs2: Remove masklog ML_UPTODATE. 2011-02-24 16:22:20 +08:00
uptodate.h ocfs2: Pass struct ocfs2_caching_info to the journal functions. 2009-09-04 16:07:50 -07:00
ver.c
ver.h
xattr.c ocfs2: Commit transactions in error cases -v2 2011-11-17 01:46:47 -08:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00