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| author | Nick Piggin <npiggin@suse.de> | 2008-02-06 01:37:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 10:41:06 -0800 |
| commit | d599e36a9ea85432587f4550acc113cd7549d12a (patch) | |
| tree | 2baec196271ccafac682b4bdbef3690cca686221 /Documentation/unaligned-memory-access.txt | |
| parent | eea63e0e8a60d00485b47fb6e75d9aa2566b989b (diff) | |
| download | linux-d599e36a9ea85432587f4550acc113cd7549d12a.tar.gz linux-d599e36a9ea85432587f4550acc113cd7549d12a.tar.bz2 linux-d599e36a9ea85432587f4550acc113cd7549d12a.zip | |
inotify: fix race
There is a race between setting an inode's children's "parent watched" flag
when placing the first watch on a parent, and instantiating new children of
that parent: a child could miss having its flags set by
set_dentry_child_flags, but then inotify_d_instantiate might still see
!inotify_inode_watched.
The solution is to set_dentry_child_flags after adding the watch. Locking is
taken care of, because both set_dentry_child_flags and inotify_d_instantiate
hold dcache_lock and child->d_locks.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Robert Love <rlove@google.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Jan Kara <jack@ucw.cz>
Cc: Yan Zheng <yanzheng@21cn.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/unaligned-memory-access.txt')
0 files changed, 0 insertions, 0 deletions