iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NFSD: Streamline the rare "found" case

Browse Source 
[ Upstream commit add1511c38166cf1036765f8c4aa939f0275a799 ]

Move a rarely called function call site out of the hot path.

This is an exceptionally small improvement because the compiler
inlines most of the functions that nfsd_cache_lookup() calls.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chuck Lever 2021-09-28 11:40:59 -04:00 committed by Greg Kroah-Hartman
parent 3304d16c24
commit 194071d46c
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
fs/nfsd/nfscache.c
View File

@ -448,11 +448,8 @@ int nfsd_cache_lookup(struct svc_rqst *rqstp)
b = nfsd_cache_bucket_find(rqstp->rq_xid, nn);
spin_lock(&b->cache_lock);
found = nfsd_cache_insert(b, rp, nn);
if (found != rp) {
nfsd_reply_cache_free_locked(NULL, rp, nn);
rp = found;
if (found != rp)
goto found_entry;
}
nfsd_stats_rc_misses_inc();
rqstp->rq_cacherep = rp;
@ -470,8 +467,10 @@ out:
found_entry:
/* We found a matching entry which is either in progress or done. */
nfsd_reply_cache_free_locked(NULL, rp, nn);
nfsd_stats_rc_hits_inc();
rtn = RC_DROPIT;
rp = found;
/* Request being processed */
if (rp->c_state == RC_INPROG)