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e15f742ce8
linux/fs/ext4
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Theodore Ts'o e15f742ce8 ext4: make the extent_status code more robust against ENOMEM failures 
Some callers of ext4_es_remove_extent() and ext4_es_insert_extent()
may not be completely robust against ENOMEM failures (or the
consequences of reflecting ENOMEM back up to userspace may lead to
xfstest or user application failure).

To mitigate against this, when trying to insert an entry in the extent
status tree, try to shrink the inode's extent status tree before
returning ENOMEM.  If there are entries which don't record information
about extents under delayed allocations, freeing one of them is
preferable to returning ENOMEM.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
2013-07-15 00:12:14 -04:00
..
acl.c ext4: fix the number of credits needed for acl ops with inline data 2013-02-09 15:23:03 -05:00
acl.h fs: take the ACL checks to common code 2011-07-25 14:30:23 -04:00
balloc.c ext4: fix ext4_get_group_number() 2013-07-05 23:11:16 -04:00
bitmap.c ext4: Checksum the block bitmap properly with bigalloc enabled 2012-10-22 00:34:32 -04:00
block_validity.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
dir.c ext4: fix readdir error in the case of inline_data+dir_index 2013-04-19 17:53:09 -04:00
ext4_extents.h ext4: mext_insert_extents should update extent block checksum 2013-04-19 14:04:12 -04:00
ext4_jbd2.c ext4: provide wrappers for transaction reservation calls 2013-06-04 12:37:50 -04:00
ext4_jbd2.h ext4: use transaction reservation for extent conversion in ext4_end_io 2013-06-04 13:21:11 -04:00
ext4.h ext4: pass inode pointer instead of file pointer to punch hole 2013-07-01 08:12:38 -04:00
extents_status.c ext4: make the extent_status code more robust against ENOMEM failures 2013-07-15 00:12:14 -04:00
extents_status.h ext4: improve extent cache shrink mechanism to avoid to burn CPU time 2013-07-01 08:12:37 -04:00
extents.c ext4: simplify calculation of blocks to free on error 2013-07-15 00:09:37 -04:00
file.c ext4: fix overflows in SEEK_HOLE, SEEK_DATA implementations 2013-05-31 19:37:56 -04:00
fsync.c ext4: Fix fsync error handling after filesystem abort 2013-06-12 22:38:04 -04:00
hash.c ext4: reduce one "if" comparison in ext4_dirhash() 2013-02-01 22:33:21 -05:00
ialloc.c ext4: provide wrappers for transaction reservation calls 2013-06-04 12:37:50 -04:00
indirect.c ext4: translate flag bits to strings in tracepoints 2013-07-01 08:12:40 -04:00
inline.c ext4: improve free space calculation for inline_data 2013-07-01 08:12:37 -04:00
inode.c ext4: fix spelling errors and a comment in extent_status tree 2013-07-13 00:40:31 -04:00
ioctl.c ext4: fix usless declarations 2013-04-09 22:48:36 -04:00
Kconfig ext4: fix Kconfig documentation for CONFIG_EXT4_DEBUG 2013-04-21 20:32:03 -04:00
Makefile ext4: Remove CONFIG_EXT4_FS_XATTR 2012-12-10 16:30:43 -05:00
mballoc.c ext4: don't allow ext4_free_blocks() to fail due to ENOMEM 2013-07-13 00:40:35 -04:00
mballoc.h ext4: use module parameters instead of debugfs for mballoc_debug 2013-02-09 16:28:20 -05:00
migrate.c ext4: do not convert to indirect with bigalloc enabled 2013-04-11 10:54:46 -04:00
mmp.c ext4: mark all metadata I/O with REQ_META 2013-04-20 15:46:17 -04:00
move_extent.c ext4: delete unused variables 2013-06-17 08:56:26 -04:00
namei.c ext3,ext4: don't mess with dir_file->f_pos in htree_dirblock_to_tree() 2013-07-01 08:12:38 -04:00
page-io.c ext4: rate limit printk in buffer_io_error() 2013-07-11 22:42:42 -04:00
resize.c ext4: fix corruption when online resizing a fs with 1K block size 2013-07-01 08:12:08 -04:00
super.c ext4: don't show usrquota/grpquota twice in /proc/mounts 2013-07-11 18:54:37 -04:00
symlink.c ext4: Remove CONFIG_EXT4_FS_XATTR 2012-12-10 16:30:43 -05:00
truncate.h ext4: move common truncate functions to header file 2011-06-27 19:16:04 -04:00
xattr_security.c Merge branch 'for_linus' into for_linus_merged 2012-01-10 11:54:07 -05:00
xattr_trusted.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr_user.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr.c ext4: fix miscellaneous big endian warnings 2013-04-09 23:59:55 -04:00
xattr.h ext4: reserve xattr index for Rich ACL support 2013-04-18 14:53:15 -04:00