From: Jeff Layton Date: Wed, 21 Jan 2009 16:34:50 +0000 (-0500) Subject: dlm: initialize file_lock struct in GETLK before copying conflicting lock X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=20d5a39929232a715f29e6cb7e3f0d0c790f41eb;p=openwrt%2Fstaging%2Fblogic.git dlm: initialize file_lock struct in GETLK before copying conflicting lock dlm_posix_get fills out the relevant fields in the file_lock before returning when there is a lock conflict, but doesn't clean out any of the other fields in the file_lock. When nfsd does a NFSv4 lockt call, it sets the fl_lmops to nfsd_posix_mng_ops before calling the lower fs. When the lock comes back after testing a lock on GFS2, it still has that field set. This confuses nfsd into thinking that the file_lock is a nfsd4 lock. Fix this by making DLM reinitialize the file_lock before copying the fields from the conflicting lock. Signed-off-by: Jeff Layton Signed-off-by: David Teigland --- diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c index 502b1ea5ef6b..894a32d438d5 100644 --- a/fs/dlm/plock.c +++ b/fs/dlm/plock.c @@ -304,7 +304,9 @@ int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file, if (rv == -ENOENT) rv = 0; else if (rv > 0) { + locks_init_lock(fl); fl->fl_type = (op->info.ex) ? F_WRLCK : F_RDLCK; + fl->fl_flags = FL_POSIX; fl->fl_pid = op->info.pid; fl->fl_start = op->info.start; fl->fl_end = op->info.end;