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ceph: Do not do invalidate if the filesystem is mounted nofsc

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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>
This commit is contained in:
Milosz Tanski 2013-09-05 18:29:03 +00:00
parent d4d3aa38d6
commit e81568eb18
1 changed files with 4 additions and 0 deletions
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4
fs/ceph/cache.c
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@ -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,