[PATCH 8/8] ceph: Do not do invalidate if the filesystem is mountednofsc

[Milosz Tanski]

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@xxxxxxxxx>
---
 fs/ceph/cache.c |    4 ++++
 1 file changed, 4 insertions(+)

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,
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/