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| author | David Howells <dhowells@redhat.com> | 2009-04-03 19:42:37 +0400 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2009-04-03 19:42:37 +0400 |
| commit | 0e04d4cefcf4d8fbbdb2c50e93ad541582933fd2 (patch) | |
| tree | 97c4cda6a2c246660e6a5c718a9272375cdb259c /fs/fscache/internal.h | |
| parent | a6891645cf2ddd4778096848a864580e7258faba (diff) | |
| download | linux-0e04d4cefcf4d8fbbdb2c50e93ad541582933fd2.tar.xz | |
FS-Cache: Add cache tag handling
Implement two features of FS-Cache:
(1) The ability to request and release cache tags - names by which a cache may
be known to a netfs, and thus selected for use.
(2) An internal function by which a cache is selected by consulting the netfs,
if the netfs wishes to be consulted.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Tested-by: Daire Byrne <Daire.Byrne@framestore.com>
Diffstat (limited to 'fs/fscache/internal.h')
| -rw-r--r-- | fs/fscache/internal.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index 4113af8d1660..0a2069afa417 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -28,6 +28,15 @@ #define FSCACHE_MAX_THREADS 32 /* + * fsc-cache.c + */ +extern struct list_head fscache_cache_list; +extern struct rw_semaphore fscache_addremove_sem; + +extern struct fscache_cache *fscache_select_cache_for_object( + struct fscache_cookie *); + +/* * fsc-fsdef.c */ extern struct fscache_cookie fscache_fsdef_index; @@ -168,6 +177,17 @@ extern const struct file_operations fscache_stats_fops; #define fscache_stat(stat) do {} while (0) #endif +/* + * raise an event on an object + * - if the event is not masked for that object, then the object is + * queued for attention by the thread pool. + */ +static inline void fscache_raise_event(struct fscache_object *object, + unsigned event) +{ + BUG(); // TODO +} + /*****************************************************************************/ /* * debug tracing |