From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Wed, 4 Dec 2019 03:02:15 +0000 (-0800)
Subject: f2fs: should avoid recursive filesystem ops
X-Git-Tag: v5.6-rc1~110^2~27
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=4f4460c08a4711dbdbd139df961e14c7a94d9590;p=linux.git

f2fs: should avoid recursive filesystem ops

We need to use GFP_NOFS, since we did f2fs_lock_op().

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 6cebc6681487..eb653f700ade 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1191,13 +1191,13 @@ static int __exchange_data_block(struct inode *src_inode,
 
 		src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
 					array_size(olen, sizeof(block_t)),
-					GFP_KERNEL);
+					GFP_NOFS);
 		if (!src_blkaddr)
 			return -ENOMEM;
 
 		do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
 					array_size(olen, sizeof(int)),
-					GFP_KERNEL);
+					GFP_NOFS);
 		if (!do_replace) {
 			kvfree(src_blkaddr);
 			return -ENOMEM;