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authorDave Chinner <dchinner@redhat.com>2010-12-16 17:08:41 +1100
committerDave Chinner <david@fromorbit.com>2010-12-16 17:08:41 +1100
commit1a427ab0c1b205d1bda8da0b77ea9d295ac23c57 (patch)
treedc0fffd22282d0da29da43b3ebdeed7c3f5fac1d /fs/xfs/xfs_ag.h
parent1a3e8f3da09c7082d25b512a0ffe569391e4c09a (diff)
xfs: convert pag_ici_lock to a spin lock
now that we are using RCU protection for the inode cache lookups, the lock is only needed on the modification side. Hence it is not necessary for the lock to be a rwlock as there are no read side holders anymore. Convert it to a spin lock to reflect it's exclusive nature. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Alex Elder <aelder@sgi.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/xfs_ag.h')
-rw-r--r--fs/xfs/xfs_ag.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 63c7a1a6c022..58632cc17f2d 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -227,7 +227,7 @@ typedef struct xfs_perag {
atomic_t pagf_fstrms; /* # of filestreams active in this AG */
- rwlock_t pag_ici_lock; /* incore inode lock */
+ spinlock_t pag_ici_lock; /* incore inode cache lock */
struct radix_tree_root pag_ici_root; /* incore inode cache root */
int pag_ici_reclaimable; /* reclaimable inodes */
struct mutex pag_ici_reclaim_lock; /* serialisation point */