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authorYan, Zheng <zyan@redhat.com>2017-11-23 17:59:13 +0800
committerIlya Dryomov <idryomov@gmail.com>2018-01-29 18:36:04 +0100
commitd19a0b540182a742338d88f6501e4f29a30d7541 (patch)
treef0f5357777c4bc0bdab32701e891000522a610c6 /fs/ceph
parent222b7f90ba3825728fd27e9105aeee7af9576819 (diff)
downloadlinux-d19a0b540182a742338d88f6501e4f29a30d7541.tar.bz2
ceph: voluntarily drop Lx cap for link/rename requests
MDS need to xlock inode's linklock when handling link/rename requests. Voluntarily dropping CEPH_CAP_AUTH_EXCL avoids a cap revoke message. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/dir.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 3a60d113aa4e..aa2618f12cb7 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -983,7 +983,7 @@ static int ceph_link(struct dentry *old_dentry, struct inode *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;
+ req->r_old_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
err = ceph_mdsc_do_request(mdsc, dir, req);
if (err) {
d_drop(dentry);
@@ -1096,7 +1096,7 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
req->r_dentry_drop = CEPH_CAP_FILE_SHARED;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
/* release LINK_RDCACHE on source inode (mds will lock it) */
- req->r_old_inode_drop = CEPH_CAP_LINK_SHARED;
+ req->r_old_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL;
if (d_really_is_positive(new_dentry))
req->r_inode_drop = drop_caps_for_unlink(d_inode(new_dentry));
err = ceph_mdsc_do_request(mdsc, old_dir, req);