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authorJeff Layton <jlayton@redhat.com>2009-01-21 11:34:50 -0500
committerDavid Teigland <teigland@redhat.com>2009-01-21 15:28:45 -0600
commit20d5a39929232a715f29e6cb7e3f0d0c790f41eb (patch)
tree6662d2a65f470526a8d6ec591b8429a2ca6024fb
parent24179f488092267c9a033d7e25ce7a58af50ff79 (diff)
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 <jlayton@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>
-rw-r--r--fs/dlm/plock.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c
index 502b1ea5ef6..894a32d438d 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;