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nfsd: fix comments on nfsd_cache_lookup

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Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Jeff Layton 2013-02-14 16:45:13 -05:00 committed by J. Bruce Fields
parent d94af6dea9
commit 1ac8362977
1 changed files with 5 additions and 2 deletions
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7
fs/nfsd/nfscache.c
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@ -302,8 +302,10 @@ nfsd_cache_search(struct svc_rqst *rqstp, __wsum csum)
/*
* Try to find an entry matching the current call in the cache. When none
* is found, we grab the oldest unlocked entry off the LRU list.
* Note that no operation within the loop may sleep.
* is found, we try to grab the oldest expired entry off the LRU list. If
* a suitable one isn't there, then drop the cache_lock and allocate a
* new one, then search again in case one got inserted while this thread
* didn't hold the lock.
*/
int
nfsd_cache_lookup(struct svc_rqst *rqstp)
@ -344,6 +346,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp)
}
}
/* Drop the lock and allocate a new entry */
spin_unlock(&cache_lock);
rp = nfsd_reply_cache_alloc();
if (!rp) {