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authorMilosz Tanski <milosz@adfin.com>2013-09-05 18:29:03 +0000
committerMilosz Tanski <milosz@adfin.com>2013-09-06 16:50:12 +0000
commite81568eb1819af1391ac27ab28ac851410315a9f (patch)
tree1131da4ce41231d7f2563519ec24cef7fd18657f
parentd4d3aa38d66d0313401534bff2e4647df0a6d538 (diff)
downloadop-kernel-dev-e81568eb1819af1391ac27ab28ac851410315a9f.zip
op-kernel-dev-e81568eb1819af1391ac27ab28ac851410315a9f.tar.gz
ceph: Do not do invalidate if the filesystem is mounted nofsc
Previously we would always try to enqueue work even if the filesystem is not mounted with fscache enabled (or the file has no cookie). In the case of the filesystem mouned nofsc (but with fscache compiled in) this would lead to a crash. Signed-off-by: Milosz Tanski <milosz@adfin.com>
-rw-r--r--fs/ceph/cache.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c
index c737ae9..d3b88c7 100644
--- a/fs/ceph/cache.c
+++ b/fs/ceph/cache.c
@@ -374,8 +374,12 @@ out:
void ceph_queue_revalidate(struct inode *inode)
{
+ struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb);
struct ceph_inode_info *ci = ceph_inode(inode);
+ if (fsc->revalidate_wq == NULL || ci->fscache == NULL)
+ return;
+
ihold(inode);
if (queue_work(ceph_sb_to_client(inode->i_sb)->revalidate_wq,
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