cifs: move file_lock off stack in cifs_push_posix_locks
struct file_lock is pretty large, so we really don't want that on the
stack in a potentially long call chain. Reorganize the arguments to
CIFSSMBPosixLock to eliminate the need for that.
Eliminate the get_flag and simply use a non-NULL pLockInfo to indicate
that this is a "get" operation. In order to do that, need to add a new
loff_t argument for the start_offset.
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index dd28caa..e9a8ac0 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1039,12 +1039,10 @@
unlock_flocks();
list_for_each_entry_safe(lck, tmp, &locks_to_send, llist) {
- struct file_lock tmp_lock;
int stored_rc;
- tmp_lock.fl_start = lck->offset;
stored_rc = CIFSSMBPosixLock(xid, tcon, lck->netfid, lck->pid,
- 0, lck->length, &tmp_lock,
+ lck->offset, lck->length, NULL,
lck->type, 0);
if (stored_rc)
rc = stored_rc;
@@ -1159,7 +1157,7 @@
else
posix_lock_type = CIFS_WRLCK;
rc = CIFSSMBPosixLock(xid, tcon, netfid, current->tgid,
- 1 /* get */, length, flock,
+ flock->fl_start, length, flock,
posix_lock_type, wait_flag);
return rc;
}
@@ -1353,7 +1351,7 @@
posix_lock_type = CIFS_UNLCK;
rc = CIFSSMBPosixLock(xid, tcon, netfid, current->tgid,
- 0 /* set */, length, flock,
+ flock->fl_start, length, NULL,
posix_lock_type, wait_flag);
goto out;
}