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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 /include/linux/lockd
parent04266473ecf5cdca242201d9f1ed890afe070fb6 (diff)
downloadtalos-op-linux-26bcbf965f857c710adafd16cf424f043006b5dd.tar.gz
talos-op-linux-26bcbf965f857c710adafd16cf424f043006b5dd.zip
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 'include/linux/lockd')
-rw-r--r--include/linux/lockd/lockd.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 860a93f6ce6d..b0f63b6ab0d4 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -59,6 +59,8 @@ struct nlm_host {
unsigned long h_expires; /* eligible for GC */
struct list_head h_lockowners; /* Lockowners for the client */
spinlock_t h_lock;
+ struct list_head h_granted; /* Locks in GRANTED state */
+ struct list_head h_reclaim; /* Locks in RECLAIM state */
};
/*
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