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| author | Zhi Zhang <willzzhang@tencent.com> | 2019-03-22 14:16:33 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2019-05-07 19:22:36 +0200 |
| commit | 1b52931ca9b5b87e237c591f99201b6254c00809 (patch) | |
| tree | f5c5638dd718a54547c5fd19759496d806d418a4 /fs/ceph/locks.c | |
| parent | e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd (diff) | |
| download | linux-1b52931ca9b5b87e237c591f99201b6254c00809.tar.bz2 | |
ceph: remove duplicated filelock ref increase
Inode i_filelock_ref is increased in ceph_lock or ceph_flock, but it is
increased again in ceph_lock_message. This results in this ref won't
become zero. If CEPH_I_ERROR_FILELOCK flag is set in
remove_session_caps once, this flag can't be cleared even if client is
back to normal. So further file lock will return EIO.
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/locks.c')
| -rw-r--r-- | fs/ceph/locks.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 9dae2ec7e1fa..ac9b53b89365 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -237,15 +237,6 @@ int ceph_lock(struct file *file, int cmd, struct file_lock *fl) spin_lock(&ci->i_ceph_lock); if (ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) { err = -EIO; - } else if (op == CEPH_MDS_OP_SETFILELOCK) { - /* - * increasing i_filelock_ref closes race window between - * handling request reply and adding file_lock struct to - * inode. Otherwise, i_auth_cap may get trimmed in the - * window. Caller function will decrease the counter. - */ - fl->fl_ops = &ceph_fl_lock_ops; - atomic_inc(&ci->i_filelock_ref); } spin_unlock(&ci->i_ceph_lock); if (err < 0) { @@ -299,10 +290,6 @@ int ceph_flock(struct file *file, int cmd, struct file_lock *fl) spin_lock(&ci->i_ceph_lock); if (ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) { err = -EIO; - } else { - /* see comment in ceph_lock */ - fl->fl_ops = &ceph_fl_lock_ops; - atomic_inc(&ci->i_filelock_ref); } spin_unlock(&ci->i_ceph_lock); if (err < 0) { |