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FS-Cache: Make kAFS use FS-Cache

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The attached patch makes the kAFS filesystem in fs/afs/ use FS-Cache, and
through it any attached caches.  The kAFS filesystem will use caching
automatically if it's available.

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>
This commit is contained in:
David Howells
2009-04-03 16:42:41 +01:00
parent 9ae326a690
commit 9b3f26c911
13 changed files with 606 additions and 382 deletions
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25
fs/afs/vlocation.c
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@@ -281,9 +281,8 @@ static void afs_vlocation_apply_update(struct afs_vlocation *vl,
vl->vldb = *vldb;
#ifdef AFS_CACHING_SUPPORT
/* update volume entry in local cache */
cachefs_update_cookie(vl->cache);
#ifdef CONFIG_AFS_FSCACHE
fscache_update_cookie(vl->cache);
#endif
}
@@ -304,11 +303,9 @@ static int afs_vlocation_fill_in_record(struct afs_vlocation *vl,
memset(&vldb, 0, sizeof(vldb));
/* see if we have an in-cache copy (will set vl->valid if there is) */
#ifdef AFS_CACHING_SUPPORT
cachefs_acquire_cookie(cell->cache,
&afs_volume_cache_index_def,
vlocation,
&vl->cache);
#ifdef CONFIG_AFS_FSCACHE
vl->cache = fscache_acquire_cookie(vl->cell->cache,
&afs_vlocation_cache_index_def, vl);
#endif
if (vl->valid) {
@@ -420,6 +417,11 @@ fill_in_record:
spin_unlock(&vl->lock);
wake_up(&vl->waitq);
/* update volume entry in local cache */
#ifdef CONFIG_AFS_FSCACHE
fscache_update_cookie(vl->cache);
#endif
/* schedule for regular updates */
afs_vlocation_queue_for_updates(vl);
goto success;
@@ -465,7 +467,7 @@ found_in_memory:
spin_unlock(&vl->lock);
success:
_leave(" = %p",vl);
_leave(" = %p", vl);
return vl;
error_abandon:
@@ -523,10 +525,9 @@ static void afs_vlocation_destroy(struct afs_vlocation *vl)
{
_enter("%p", vl);
#ifdef AFS_CACHING_SUPPORT
cachefs_relinquish_cookie(vl->cache, 0);
#ifdef CONFIG_AFS_FSCACHE
fscache_relinquish_cookie(vl->cache, 0);
#endif
afs_put_cell(vl->cell);
kfree(vl);
}