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NFS: Use delegations to optimise ACCESS calls
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Trond Myklebust authored and Trond Myklebust committed Dec 23, 2008
1 parent 15860ab commit 7a50c60
Showing 1 changed file with 2 additions and 1 deletion.
3 changes: 2 additions & 1 deletion fs/nfs/dir.c
Original file line number Diff line number Diff line change
Expand Up @@ -1797,7 +1797,8 @@ static int nfs_access_get_cached(struct inode *inode, struct rpc_cred *cred, str
cache = nfs_access_search_rbtree(inode, cred);
if (cache == NULL)
goto out;
if (!time_in_range(jiffies, cache->jiffies, cache->jiffies + nfsi->attrtimeo))
if (!nfs_have_delegation(inode, FMODE_READ) &&
!time_in_range(jiffies, cache->jiffies, cache->jiffies + nfsi->attrtimeo))
goto out_stale;
res->jiffies = cache->jiffies;
res->cred = cache->cred;
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