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authorJeff Layton <jlayton@redhat.com>2013-03-15 09:16:29 -0400
committerJ. Bruce Fields <bfields@redhat.com>2013-03-18 17:21:30 -0400
commitac534ff2d5508bdff1358a55d88053da729ff46b (patch)
treedb11b9341feb5b90305fa3594549a86e0ea89448 /fs
parenta517b608fa3d9b65930ef53ffe4a2f9800e10f7d (diff)
downloadlinux-ac534ff2d5508bdff1358a55d88053da729ff46b.tar.gz
nfsd: fix startup order in nfsd_reply_cache_init
If we end up doing "goto out_nomem" in this function, we'll call nfsd_reply_cache_shutdown. That will attempt to walk the LRU list and free entries, but that list may not be initialized yet if the server is starting up for the first time. It's also possible for the shrinker to kick in before we've initialized the LRU list. Rearrange the initialization so that the LRU list_head and cache size are initialized before doing any of the allocations that might fail. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfsd/nfscache.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 18509bd6f58..ca05f6dc354 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -119,6 +119,10 @@ nfsd_reply_cache_free(struct svc_cacherep *rp)
int nfsd_reply_cache_init(void)
{
+ INIT_LIST_HEAD(&lru_head);
+ max_drc_entries = nfsd_cache_size_limit();
+ num_drc_entries = 0;
+
register_shrinker(&nfsd_reply_cache_shrinker);
drc_slab = kmem_cache_create("nfsd_drc", sizeof(struct svc_cacherep),
0, 0, NULL);
@@ -129,10 +133,6 @@ int nfsd_reply_cache_init(void)
if (!cache_hash)
goto out_nomem;
- INIT_LIST_HEAD(&lru_head);
- max_drc_entries = nfsd_cache_size_limit();
- num_drc_entries = 0;
-
return 0;
out_nomem:
printk(KERN_ERR "nfsd: failed to allocate reply cache\n");