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ceph: don't request excl caps when mount is readonly

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Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2018-12-05 11:29:35 +08:00 committed by Ilya Dryomov
parent 3c1392d4c4
commit 8a2ac3a8e9
1 changed files with 5 additions and 2 deletions
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7
fs/ceph/caps.c
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@ -1855,14 +1855,17 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
retain |= CEPH_CAP_ANY; /* be greedy */
} else if (S_ISDIR(inode->i_mode) &&
(issued & CEPH_CAP_FILE_SHARED) &&
__ceph_dir_is_complete(ci)) {
__ceph_dir_is_complete(ci)) {
/*
* If a directory is complete, we want to keep
* the exclusive cap. So that MDS does not end up
* revoking the shared cap on every create/unlink
* operation.
*/
want = CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_EXCL;
if (IS_RDONLY(inode))
want = CEPH_CAP_ANY_SHARED;
else
want = CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_EXCL;
retain |= want;
} else {