5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chuck Lever <chuck.lever@xxxxxxxxxx>
[ Upstream commit d63293272abb51c02457f1017dfd61c3270d9ae3 ]
Surface the count of freed nfsd_file items.
Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfsd/filecache.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index 5a09b76ae25a8..5d31622c23040 100644
--- a/fs/nfsd/filecache.c
+++ b/fs/nfsd/filecache.c
@@ -43,6 +43,7 @@ struct nfsd_fcache_bucket {
static DEFINE_PER_CPU(unsigned long, nfsd_file_cache_hits);
static DEFINE_PER_CPU(unsigned long, nfsd_file_acquisitions);
+static DEFINE_PER_CPU(unsigned long, nfsd_file_releases);
struct nfsd_fcache_disposal {
struct work_struct work;
@@ -195,6 +196,8 @@ nfsd_file_free(struct nfsd_file *nf)
{
bool flush = false;
+ this_cpu_inc(nfsd_file_releases);
+
trace_nfsd_file_put_final(nf);
if (nf->nf_mark)
nfsd_file_mark_put(nf->nf_mark);
@@ -1049,7 +1052,7 @@ 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 long hits = 0, acquisitions = 0;
+ unsigned long hits = 0, acquisitions = 0, releases = 0;
unsigned int i, count = 0, longest = 0;
unsigned long lru = 0;
@@ -1071,6 +1074,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v)
for_each_possible_cpu(i) {
hits += per_cpu(nfsd_file_cache_hits, i);
acquisitions += per_cpu(nfsd_file_acquisitions, i);
+ releases += per_cpu(nfsd_file_releases, i);
}
seq_printf(m, "total entries: %u\n", count);
@@ -1078,6 +1082,7 @@ static int nfsd_file_cache_stats_show(struct seq_file *m, void *v)
seq_printf(m, "lru entries: %lu\n", lru);
seq_printf(m, "cache hits: %lu\n", hits);
seq_printf(m, "acquisitions: %lu\n", acquisitions);
+ seq_printf(m, "releases: %lu\n", releases);
return 0;
}
--
2.43.0
