From: Neil Brown <neilb@cse.unsw.edu.au>
Date: Sat, 16 Apr 2005 22:23:54 +0000 (-0700)
Subject: [PATCH] Avoid deadlock in sync_page_io by using GFP_NOIO
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=baaa2c512dc1c47e3afeb9d558c5323c9240bd21;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] Avoid deadlock in sync_page_io by using GFP_NOIO

..as sync_page_io can be called on the write-out path.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 04562add192..aa72c88a024 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -332,7 +332,7 @@ static int bi_complete(struct bio *bio, unsigned int bytes_done, int error)
 static int sync_page_io(struct block_device *bdev, sector_t sector, int size,
 		   struct page *page, int rw)
 {
-	struct bio *bio = bio_alloc(GFP_KERNEL, 1);
+	struct bio *bio = bio_alloc(GFP_NOIO, 1);
 	struct completion event;
 	int ret;