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authorChristoph Hellwig <hch@lst.de>2006-03-20 13:44:40 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-03-20 13:44:40 -0500
commit26bcbf965f857c710adafd16cf424f043006b5dd (patch)
treefa3c1e4ba07ab3d1e4e61b27c7579c57fd2d5c65 /fs/locks.c
parent04266473ecf5cdca242201d9f1ed890afe070fb6 (diff)
lockd: stop abusing file_lock_list
Currently lockd directly access the file_lock_list from fs/locks.c. It does so to mark locks granted or reclaimable. This is very suboptimal, because a) lockd needs to poke into locks.c internals, and b) it needs to iterate over all locks in the system for marking locks granted or reclaimable. This patch adds lists for granted and reclaimable locks to the nlm_host structure instead, and adds locks to those. nlmclnt_lock: now adds the lock to h_granted instead of setting the NFS_LCK_GRANTED, still O(1) nlmclnt_mark_reclaim: goes away completely, replaced by a list_splice_init. Complexity reduced from O(locks in the system) to O(1) reclaimer: iterates over h_reclaim now, complexity reduced from O(locks in the system) to O(locks per nlm_host) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/locks.c')
-rw-r--r--fs/locks.c5
1 files changed, 1 insertions, 4 deletions
diff --git a/fs/locks.c b/fs/locks.c
index c83b5dbe0ed9..56f996e98bbc 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -139,10 +139,7 @@ int lease_break_time = 45;
139#define for_each_lock(inode, lockp) \ 139#define for_each_lock(inode, lockp) \
140 for (lockp = &inode->i_flock; *lockp != NULL; lockp = &(*lockp)->fl_next) 140 for (lockp = &inode->i_flock; *lockp != NULL; lockp = &(*lockp)->fl_next)
141 141
142LIST_HEAD(file_lock_list); 142static LIST_HEAD(file_lock_list);
143
144EXPORT_SYMBOL(file_lock_list);
145
146static LIST_HEAD(blocked_list); 143static LIST_HEAD(blocked_list);
147 144
148static kmem_cache_t *filelock_cache; 145static kmem_cache_t *filelock_cache;