diff options
author | J. Bruce Fields <bfields@fieldses.org> | 2007-05-10 18:38:43 -0400 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-10 20:25:59 -0700 |
commit | 129a84de2347002f09721cda3155ccfd19fade40 (patch) | |
tree | 11dabc5695dbcd0eb814935b2c02ddeb01442932 /drivers/leds/leds-ixp4xx-gpio.c | |
parent | a9deecba19b8f384d97f82c75379da48bccb2588 (diff) |
locks: fix F_GETLK regression (failure to find conflicts)
In 9d6a8c5c213e34c475e72b245a8eb709258e968c we changed posix_test_lock
to modify its single file_lock argument instead of taking separate input
and output arguments. This makes it no longer safe to set the output
lock's fl_type to F_UNLCK before looking for a conflict, since that
means searching for a conflict against a lock with type F_UNLCK.
This fixes a regression which causes F_GETLK to incorrectly report no
conflict on most filesystems (including any filesystem that doesn't do
its own locking).
Also fix posix_lock_to_flock() to copy the lock type. This isn't
strictly necessary, since the caller already does this; but it seems
less likely to cause confusion in the future.
Thanks to Doug Chapman for the bug report.
Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Acked-by: Doug Chapman <doug.chapman@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/leds/leds-ixp4xx-gpio.c')
0 files changed, 0 insertions, 0 deletions