diff options
| author | Yan, Zheng <zyan@redhat.com> | 2019-07-25 20:16:45 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2019-09-16 12:06:24 +0200 |
| commit | ff5d913dfc7142974eb1694d5fd6284658e46bc6 (patch) | |
| tree | e32766142b247cb0ce44bfc35421d84fad567bb3 /fs/ceph/locks.c | |
| parent | d468e729b74eafdfc8306ca8f77e1f26478d67da (diff) | |
ceph: return -EIO if read/write against filp that lost file locks
After mds evicts session, file locks get lost sliently. It's not safe to
let programs continue to do read/write.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/locks.c')
| -rw-r--r-- | fs/ceph/locks.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 5083e238ad15..544e9e85b120 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -32,14 +32,18 @@ void __init ceph_flock_init(void) static void ceph_fl_copy_lock(struct file_lock *dst, struct file_lock *src) { - struct inode *inode = file_inode(src->fl_file); + struct ceph_file_info *fi = dst->fl_file->private_data; + struct inode *inode = file_inode(dst->fl_file); atomic_inc(&ceph_inode(inode)->i_filelock_ref); + atomic_inc(&fi->num_locks); } static void ceph_fl_release_lock(struct file_lock *fl) { + struct ceph_file_info *fi = fl->fl_file->private_data; struct inode *inode = file_inode(fl->fl_file); struct ceph_inode_info *ci = ceph_inode(inode); + atomic_dec(&fi->num_locks); if (atomic_dec_and_test(&ci->i_filelock_ref)) { /* clear error when all locks are released */ spin_lock(&ci->i_ceph_lock); @@ -73,7 +77,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct inode *inode, * window. Caller function will decrease the counter. */ fl->fl_ops = &ceph_fl_lock_ops; - atomic_inc(&ceph_inode(inode)->i_filelock_ref); + fl->fl_ops->fl_copy_lock(fl, NULL); } if (operation != CEPH_MDS_OP_SETFILELOCK || cmd == CEPH_LOCK_UNLOCK) |