ceph: voluntarily drop Lx cap for link/rename requests
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Web: https://git.kernel.org/torvalds/c/d19a0b540182a742338d88f6501e4f29a30d7541 Commit: d19a0b540182a742338d88f6501e4f29a30d7541 Parent: 222b7f90ba3825728fd27e9105aeee7af9576819 Refname: refs/heads/master Author: Yan, Zheng <[email protected]> AuthorDate: Thu Nov 23 17:59:13 2017 +0800 Committer: Ilya Dryomov <[email protected]> CommitDate: Mon Jan 29 18:36:04 2018 +0100 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" <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]> --- fs/ceph/dir.c | 4 ++-- 1 file 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); -- To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html