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| author | Yan, Zheng <zyan@redhat.com> | 2015-03-26 19:06:00 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2015-04-20 18:55:40 +0300 |
| commit | 32ec4397756d072873ee778cbf41b9f6a335b953 (patch) | |
| tree | 62676c063034560d0967b64676a2d6e63ea3fbe2 /fs | |
| parent | 9571eb4f9617e89b3f979a3856b1296eba277bb1 (diff) | |
| download | linux-32ec4397756d072873ee778cbf41b9f6a335b953.tar.bz2 | |
ceph: hold on to exclusive caps on complete directories
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.
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ceph/caps.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 37a42353b983..11631c4c7d14 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -1561,7 +1561,19 @@ retry_locked: if (!mdsc->stopping && inode->i_nlink > 0) { if (want) { retain |= CEPH_CAP_ANY; /* be greedy */ + } else if (S_ISDIR(inode->i_mode) && + (issued & CEPH_CAP_FILE_SHARED) && + __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; + retain |= want; } else { + retain |= CEPH_CAP_ANY_SHARED; /* * keep RD only if we didn't have the file open RW, |