ceph: fix freeing inode vs removing session caps race
remove_session_caps() uses iterate_session_caps() to remove caps,
but iterate_session_caps() skips inodes that are being deleted.
So session->s_nr_caps can be non-zero after iterate_session_caps()
return.
We can fix the issue by waiting until deletions are complete.
__wait_on_freeing_inode() is designed for the job, but it is not
exported, so we use lookup inode function to access it.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 55aaddb..3b0abed 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -61,6 +61,14 @@
return inode;
}
+struct inode *ceph_lookup_inode(struct super_block *sb, struct ceph_vino vino)
+{
+ struct inode *inode;
+ ino_t t = ceph_vino_to_ino(vino);
+ inode = ilookup5_nowait(sb, t, ceph_ino_compare, &vino);
+ return inode;
+}
+
/*
* get/constuct snapdir inode for a given directory
*/