From: Jeff Layton <jlayton@redhat.com>
Date: Fri, 21 Jun 2013 12:58:10 +0000 (-0400)
Subject: cifs: use posix_unblock_lock instead of locks_delete_block
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~42^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a9e64a7118c5ad13dd5119da18375a5bd45b330;p=pandora-kernel.git

cifs: use posix_unblock_lock instead of locks_delete_block

commit 66189be74 (CIFS: Fix VFS lock usage for oplocked files) exported
the locks_delete_block symbol. There's already an exported helper
function that provides this capability however, so make cifs use that
instead and turn locks_delete_block back into a static function.

Note that if fl->fl_next == NULL then this lock has already been through
locks_delete_block(), so we should be OK to ignore an ENOENT error here
and simply not retry the lock.

Cc: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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