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| author |   Curt Wohlgemuth <curtw@google.com> | 2009-07-13 09:07:20 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2009-07-13 09:07:20 -0400 |
| commit | e6b5d30104db5f34110678ecab14988f1f1eff63 (patch) | |
| tree | 922408d70d388925f0113998649d56da475deff4 /arch/x86/mm/fault.c | |
| parent | ext4: Move __ext4_journalled_writepage() to avoid forward declaration (diff) | |
| download | linux-dev-e6b5d30104db5f34110678ecab14988f1f1eff63.tar.xz linux-dev-e6b5d30104db5f34110678ecab14988f1f1eff63.zip | |
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>
Diffstat (limited to 'arch/x86/mm/fault.c')
0 files changed, 0 insertions, 0 deletions