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authorJ. Bruce Fields <bfields@fieldses.org>2007-05-10 18:38:43 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-10 20:25:59 -0700
commit129a84de2347002f09721cda3155ccfd19fade40 (patch)
tree11dabc5695dbcd0eb814935b2c02ddeb01442932 /arch/sparc64
parenta9deecba19b8f384d97f82c75379da48bccb2588 (diff)
downloadlinux-2.6.34-ux500-129a84de2347002f09721cda3155ccfd19fade40.tar.gz
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 'arch/sparc64')
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