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authorMatthew Wilcox <willy@linux.intel.com>2008-05-19 16:34:27 +1000
committerNiv Sardi <xaiki@debian.org>2008-07-28 16:58:12 +1000
commitd748c62367eb630cc30b91d561a5362f597a0892 (patch)
tree551fc30d6237517822edc6729456349e1bd0ab28 /fs/xfs/xfs_attr.h
parentd729eae8933cb3eb8edf1446532c178b66b293a9 (diff)
[XFS] Convert l_flushsema to a sv_t
The l_flushsema doesn't exactly have completion semantics, nor mutex semantics. It's used as a list of tasks which are waiting to be notified that a flush has completed. It was also being used in a way that was potentially racy, depending on the semaphore implementation. By using a sv_t instead of a semaphore we avoid the need for a separate counter, since we know we just need to wake everything on the queue. Original waitqueue implementation from Matthew Wilcox. Cleanup and conversion to sv_t by Christoph Hellwig. SGI-PV: 981507 SGI-Modid: xfs-linux-melb:xfs-kern:31059a Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_attr.h')
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