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authorJeff Layton <jlayton@redhat.com>2013-01-28 23:41:13 +0400
committerJ. Bruce Fields <bfields@redhat.com>2013-02-04 18:16:23 +0400
commitd1a0774de6cb908f5ba7806d09aaf86bb03fa182 (patch)
treebe9d6cc9f4bd3ce0c7f3da6665ced8f91e752258 /fs/nfsd/cache.h
parent25e6b8b0e1a247747db5275b1b6b362f5acf2245 (diff)
downloadlinux-d1a0774de6cb908f5ba7806d09aaf86bb03fa182.tar.xz
nfsd: clean up and clarify the cache expiration code
Add a preprocessor constant for the expiry time of cache entries, and move the test for an expired entry into a function. Note that the current code does not test for RC_INPROG. It just assumes that it won't take more than 2 minutes to fill out an in-progress entry. I'm not sure how valid that assumption is though, so let's just ensure that we never consider an RC_INPROG entry to be expired. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/cache.h')
-rw-r--r--fs/nfsd/cache.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h
index f8c6df8649dc..9c7232b45103 100644
--- a/fs/nfsd/cache.h
+++ b/fs/nfsd/cache.h
@@ -70,6 +70,9 @@ enum {
*/
#define RC_DELAY (HZ/5)
+/* Cache entries expire after this time period */
+#define RC_EXPIRE (120 * HZ)
+
int nfsd_reply_cache_init(void);
void nfsd_reply_cache_shutdown(void);
int nfsd_cache_lookup(struct svc_rqst *);