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| author | Chuck Lever <chuck.lever@oracle.com> | 2022-07-08 14:23:52 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-07-29 20:09:21 -0400 |
| commit | 0fd244c115f0321fc5e34ad2291f2a572508e3f7 (patch) | |
| tree | d50820a05f567734d3e0ccc73ee2cea215e7b471 /fs/nfsd/filecache.c | |
| parent | ca3f9acb6d3faf78da2b63324f7c737dbddf7f69 (diff) | |
| download | lwn-0fd244c115f0321fc5e34ad2291f2a572508e3f7.tar.gz lwn-0fd244c115f0321fc5e34ad2291f2a572508e3f7.zip | |
NFSD: Report filecache LRU size
Surface the NFSD filecache's LRU list length to help field
troubleshooters monitor filecache issues.
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd/filecache.c')
| -rw-r--r-- | fs/nfsd/filecache.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index e1f98d32cee1..c61c1cf32346 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -1048,7 +1048,7 @@ nfsd_file_create(struct svc_rqst *rqstp, struct svc_fh *fhp, static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) { unsigned int i, count = 0, longest = 0; - unsigned long hits = 0; + unsigned long lru = 0, hits = 0; /* * No need for spinlocks here since we're not terribly interested in @@ -1061,6 +1061,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) count += nfsd_file_hashtbl[i].nfb_count; longest = max(longest, nfsd_file_hashtbl[i].nfb_count); } + lru = list_lru_count(&nfsd_file_lru); } mutex_unlock(&nfsd_mutex); @@ -1069,6 +1070,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v) seq_printf(m, "total entries: %u\n", count); seq_printf(m, "longest chain: %u\n", longest); + seq_printf(m, "lru entries: %lu\n", lru); seq_printf(m, "cache hits: %lu\n", hits); return 0; } |