[PATCH v12 20/24] nfsd: use GC for nfsd_file returned by nfsd_file_acquire_local

[Mike Snitzer <snitzer@kernel.org>]

Offers performance improvements if/when a file is reopened before
launderette cleans it from the filecache's LRU.

Suggested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
---
 fs/nfsd/filecache.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 56be99a3667a..447faa194166 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -1197,9 +1197,10 @@ nfsd_file_acquire(struct svc_rqst *rqstp, struct svc_fh *fhp,
  * a file.  The security implications of this should be carefully
  * considered before use.
  *
- * The nfsd_file_object returned by this API is reference-counted
- * but not garbage-collected. The object is unhashed after the
- * final nfsd_file_put().
+ * The nfsd_file object returned by this API is reference-counted
+ * and garbage-collected. The object is retained for a few
+ * seconds after the final nfsd_file_put() in case the caller
+ * wants to re-use it.
  *
  * Return values:
  *   %nfs_ok - @pnf points to an nfsd_file with its reference
@@ -1214,7 +1215,7 @@ nfsd_file_acquire_local(struct net *net, struct svc_cred *cred,
 			unsigned int may_flags, struct nfsd_file **pnf)
 {
 	return nfsd_file_do_acquire(NULL, net, cred, nfs_vers, client,
-				    fhp, may_flags, NULL, pnf, false);
+				    fhp, may_flags, NULL, pnf, true);
 }
 
 /**
-- 
2.44.0