diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2014-03-30 10:20:01 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-03 12:02:34 -0700 |
| commit | da49d7d6349af87e838f881f593337c9459d883a (patch) | |
| tree | c2ef671c6d42003951bda13712b40d480bcc2f2e /tools/perf/scripts/python/syscall-counts.py | |
| parent | 536663583285f2dccf5bdb1e997d25268772a4eb (diff) | |
ext4: atomically set inode->i_flags in ext4_set_inode_flags()
commit 00a1a053ebe5febcfc2ec498bd894f035ad2aa06 upstream.
Use cmpxchg() to atomically set i_flags instead of clearing out the
S_IMMUTABLE, S_APPEND, etc. flags and then setting them from the
EXT4_IMMUTABLE_FL, EXT4_APPEND_FL flags, since this opens up a race
where an immutable file has the immutable flag cleared for a brief
window of time.
Reported-by: John Sullivan <jsrhbz@kanargh.force9.co.uk>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions