diff options
| author | David Howells <dhowells@redhat.com> | 2015-02-19 23:47:31 +0000 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2015-02-24 10:05:27 +0000 |
| commit | 182d919b84902eece162c63ed3d476c8016b4197 (patch) | |
| tree | c2f02f26cdcaa4718121c94e8b050a598fab5f8c /include | |
| parent | b2b89ebfc0f0287e20516a5443d93af309b800cf (diff) | |
| download | linux-182d919b84902eece162c63ed3d476c8016b4197.tar.gz linux-182d919b84902eece162c63ed3d476c8016b4197.tar.bz2 linux-182d919b84902eece162c63ed3d476c8016b4197.zip | |
FS-Cache: Count culled objects and objects rejected due to lack of space
Count the number of objects that get culled by the cache backend and the
number of objects that the cache backend declines to instantiate due to lack
of space in the cache.
These numbers are made available through /proc/fs/fscache/stats
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Steve Dickson <steved@redhat.com>
Acked-by: Jeff Layton <jeff.layton@primarydata.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fscache-cache.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h index 771484993ca7..c9dafdaf3347 100644 --- a/include/linux/fscache-cache.h +++ b/include/linux/fscache-cache.h @@ -371,6 +371,7 @@ struct fscache_object { #define FSCACHE_OBJECT_IS_LOOKED_UP 4 /* T if object has been looked up */ #define FSCACHE_OBJECT_IS_AVAILABLE 5 /* T if object has become active */ #define FSCACHE_OBJECT_RETIRED 6 /* T if object was retired on relinquishment */ +#define FSCACHE_OBJECT_KILLED_BY_CACHE 7 /* T if object was killed by the cache */ struct list_head cache_link; /* link in cache->object_list */ struct hlist_node cookie_link; /* link in cookie->backing_objects */ @@ -551,4 +552,15 @@ extern enum fscache_checkaux fscache_check_aux(struct fscache_object *object, const void *data, uint16_t datalen); +extern void fscache_object_retrying_stale(struct fscache_object *object); + +enum fscache_why_object_killed { + FSCACHE_OBJECT_IS_STALE, + FSCACHE_OBJECT_NO_SPACE, + FSCACHE_OBJECT_WAS_RETIRED, + FSCACHE_OBJECT_WAS_CULLED, +}; +extern void fscache_object_mark_killed(struct fscache_object *object, + enum fscache_why_object_killed why); + #endif /* _LINUX_FSCACHE_CACHE_H */ |