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ceph: add flock/fcntl lock support

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Implement flock inode operation to support advisory file locking.  All
lock/unlock operations are synchronous with the MDS.  Lock state is
sent when reconnecting to a recovering MDS to restore the shared lock
state.

Signed-off-by: Greg Farnum <gregf@hq.newdream.net>
Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Greg Farnum 2010-08-02 15:34:23 -07:00 • committed by Sage Weil
parent fbaad9797a
commit 40819f6fb2
5 changed files with 284 additions and 2 deletions
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2
fs/ceph/file.c
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@ -938,6 +938,8 @@ const struct file_operations ceph_file_fops = {
.aio_write = ceph_aio_write,
.mmap = ceph_mmap,
.fsync = ceph_fsync,
.lock = ceph_lock,
.flock = ceph_flock,
.splice_read = generic_file_splice_read,
.splice_write = generic_file_splice_write,
.unlocked_ioctl = ceph_ioctl,