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Commit a0dff78d authored by Sage Weil's avatar Sage Weil
Browse files

ceph: avoid dcache readdir for snapdir 



We should always go to the MDS for readdir on the hidden snapdir.  The
set of snapshots can change at any time; the client can't trust its cache
for that.

Signed-off-by: default avatarSage Weil <sage@newdream.net>
parent b37fa16e

fs/ceph/dir.c

+1 −0
Original line number Diff line number Diff line
@@ -266,6 +266,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir) 
	spin_lock(&inode->i_lock);

	if ((filp->f_pos == 2 || fi->dentry) &&

	    !ceph_test_opt(client, NOASYNCREADDIR) &&

	    ceph_snap(inode) != CEPH_SNAPDIR &&

	    (ci->i_ceph_flags & CEPH_I_COMPLETE) &&

	    __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) {

		err = __dcache_readdir(filp, dirent, filldir);