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e6b5d30104
linux/fs/ext4
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Curt Wohlgemuth e6b5d30104 ext4: Fix buffer head reference leak in no-journal mode 
We found a problem with buffer head reference leaks when using an ext4
partition without a journal.  In particular, calls to ext4_forget() would
not to a brelse() on the input buffer head, which will cause pages they
belong to to not be reclaimable.

Further investigation showed that all places where ext4_journal_forget() and
ext4_journal_revoke() are called are subject to the same problem.  The patch
below changes __ext4_journal_forget/__ext4_journal_revoke to do an explicit
release of the buffer head when the journal handle isn't valid.

Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-07-13 09:07:20 -04:00
..
acl.c helpers for acl caching + switch to those 2009-06-24 08:17:07 -04:00
acl.h switch ext4 to inode->i_acl 2009-06-24 08:17:04 -04:00
balloc.c ext4: Convert ext4_lock_group to use sb_bgl_lock 2009-05-02 20:35:09 -04:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
block_validity.c ext4: Add a comprehensive block validity check to ext4_get_blocks() 2009-05-17 15:38:01 -04:00
dir.c ext4: Define a new set of flags for ext4_get_blocks() 2009-05-14 00:58:52 -04:00
ext4_extents.h ext4: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl 2009-06-17 19:24:03 -04:00
ext4_jbd2.c ext4: Fix buffer head reference leak in no-journal mode 2009-07-13 09:07:20 -04:00
ext4_jbd2.h ext4: Fix buffer head reference leak in no-journal mode 2009-07-13 09:07:20 -04:00
ext4.h ext4: naturally align struct ext4_allocation_request 2009-07-13 10:24:17 -04:00
extents.c ext4: Calculate required journal credits for inserting an extent properly 2009-07-05 23:12:04 -04:00
file.c ext4: update the s_last_mounted field in the superblock 2009-06-13 10:09:48 -04:00
fsync.c ext4: convert instrumentation from markers to tracepoints 2009-06-17 11:48:11 -04:00
hash.c ext4: Add support for non-native signed/unsigned htree hash algorithms 2008-10-28 13:21:44 -04:00
ialloc.c ext4: Fix goal inum check in the inode allocator 2009-07-05 23:45:11 -04:00
inode.c ext4: Fix buffer head reference leak in no-journal mode 2009-07-13 09:07:20 -04:00
ioctl.c ext4: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl 2009-06-17 19:24:03 -04:00
Kconfig trivial: fix typos/grammar errors in Kconfig texts 2009-03-30 15:22:01 +02:00
Makefile ext4: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl 2009-06-17 19:24:03 -04:00
mballoc.c ext4: Use rcu_barrier() on module unload. 2009-07-05 22:29:27 -04:00
mballoc.h ext4: Move fs/ext4/group.h into ext4.h 2009-05-01 19:44:44 -04:00
migrate.c ext4: teach the inode allocator to use a goal inode number 2009-06-13 11:45:35 -04:00
move_extent.c ext4: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl 2009-06-17 19:24:03 -04:00
namei.c ext4: teach the inode allocator to use a goal inode number 2009-06-13 11:45:35 -04:00
resize.c block: rename CONFIG_LBD to CONFIG_LBDAF 2009-06-19 08:08:50 +02:00
super.c switch ext4 to inode->i_acl 2009-06-24 08:17:04 -04:00
symlink.c ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00
xattr_security.c
xattr_trusted.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr_user.c ext4: remove double definitions of xattr macros 2008-07-11 19:27:31 -04:00
xattr.c ext4: Use lowercase names of quota functions 2009-03-26 02:18:36 +01:00
xattr.h ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00