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authorYan, Zheng <zheng.z.yan@intel.com>2013-07-21 16:25:25 +0400
committerSage Weil <sage@inktank.com>2013-08-10 04:54:32 +0400
commitad88f23f42a9b34a0b29a5b19d37251ccb7dd776 (patch)
tree730810dccdd6eb2fff76d831356edcee8d537bed /fs/ceph
parentc338c07c51e3106711fad5eb599e375eadb6855d (diff)
downloadlinux-ad88f23f42a9b34a0b29a5b19d37251ccb7dd776.tar.xz
ceph: drop CAP_LINK_SHARED when sending "link" request to MDS
To handle "link" request, the MDS need to xlock inode's linklock, which requires revoking any CAP_LINK_SHARED. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com> Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/dir.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index f02d82b7933e..0e4da4a9c213 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -796,6 +796,8 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir,
req->r_locked_dir = dir;
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
+ /* release LINK_SHARED on source inode (mds will lock it) */
+ req->r_old_inode_drop = CEPH_CAP_LINK_SHARED;
err = ceph_mdsc_do_request(mdsc, dir, req);
if (err) {
d_drop(dentry);