From: Christoph Hellwig <hch@lst.de>
Date: Tue, 16 Aug 2016 22:40:18 +0000 (+1000)
Subject: iomap: remove superflous pagefault_disable from iomap_write_actor
X-Git-Tag: v4.8-rc3~8^2^2~5
X-Git-Url: http://git.cascardo.eti.br/?p=cascardo%2Flinux.git;a=commitdiff_plain;h=274c887494cb248eb05f8180bda8298942d98625

iomap: remove superflous pagefault_disable from iomap_write_actor

iov_iter_copy_from_user_atomic disables page faults internally, no need to
do it around the call.  This also brings the iomap code in line with
the original filemap version.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
---

diff --git a/fs/iomap.c b/fs/iomap.c
index f39c3181fa10..74712e25184b 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -194,9 +194,7 @@ again:
 		if (mapping_writably_mapped(inode->i_mapping))
 			flush_dcache_page(page);
 
-		pagefault_disable();
 		copied = iov_iter_copy_from_user_atomic(page, i, offset, bytes);
-		pagefault_enable();
 
 		flush_dcache_page(page);