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| author | Zhi Zhang <zhang.david2011@gmail.com> | 2018-01-24 16:24:33 +0300 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-02-26 18:19:16 +0300 |
| commit | 6ef0bc6ddee1f62310877a1d53b1ea1d0d8e51a2 (patch) | |
| tree | a4657907e7179ff8d0ffe81c26cae5911790bc41 /fs/ceph/caps.c | |
| parent | 4a3928c6f8a53fa1aed28ccba227742486e8ddcb (diff) | |
| download | linux-6ef0bc6ddee1f62310877a1d53b1ea1d0d8e51a2.tar.xz | |
ceph: flush dirty caps of unlinked inode ASAP
Client should release unlinked inode from its cache ASAP. But client
can't release inode with dirty caps.
Link: http://tracker.ceph.com/issues/22886
Signed-off-by: Zhi Zhang <zhang.david2011@gmail.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/caps.c')
| -rw-r--r-- | fs/ceph/caps.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 6582c4507e6c..0e5bd3e3344e 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -3965,6 +3965,32 @@ void ceph_put_fmode(struct ceph_inode_info *ci, int fmode) } /* + * For a soon-to-be unlinked file, drop the AUTH_RDCACHE caps. If it + * looks like the link count will hit 0, drop any other caps (other + * than PIN) we don't specifically want (due to the file still being + * open). + */ +int ceph_drop_caps_for_unlink(struct inode *inode) +{ + struct ceph_inode_info *ci = ceph_inode(inode); + int drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL; + + spin_lock(&ci->i_ceph_lock); + if (inode->i_nlink == 1) { + drop |= ~(__ceph_caps_wanted(ci) | CEPH_CAP_PIN); + + ci->i_ceph_flags |= CEPH_I_NODELAY; + if (__ceph_caps_dirty(ci)) { + struct ceph_mds_client *mdsc = + ceph_inode_to_client(inode)->mdsc; + __cap_delay_requeue_front(mdsc, ci); + } + } + spin_unlock(&ci->i_ceph_lock); + return drop; +} + +/* * Helpers for embedding cap and dentry lease releases into mds * requests. * |