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ceph: don't include used caps in cap_wanted

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when copying files to cephfs, file data may stay in page cache after
corresponding file is closed. Cached data use Fc capability. If we
include Fc capability in cap_wanted, MDS will treat files with cached
data as open files, and journal them in an EOpen event when trimming
log segment.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2015-05-25 17:36:42 +08:00 committed by Ilya Dryomov
parent 3e0708b990
commit 41445999ae
1 changed files with 3 additions and 3 deletions
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6
fs/ceph/caps.c
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@ -1525,13 +1525,13 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
retry_locked:
file_wanted = __ceph_caps_file_wanted(ci);
used = __ceph_caps_used(ci);
want = file_wanted | used;
issued = __ceph_caps_issued(ci, &implemented);
revoking = implemented & ~issued;
retain = want | CEPH_CAP_PIN;
want = file_wanted;
retain = file_wanted | used | CEPH_CAP_PIN;
if (!mdsc->stopping && inode->i_nlink > 0) {
if (want) {
if (file_wanted) {
retain |= CEPH_CAP_ANY; /* be greedy */
} else if (S_ISDIR(inode->i_mode) &&
(issued & CEPH_CAP_FILE_SHARED) &&