linux-kernel - [PATCH 4/6] f2fs: should avoid recursive filesystem ops

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Message-Id: <20191209222345.1078-4-jaegeuk@kernel.org>
Date:   Mon,  9 Dec 2019 14:23:43 -0800
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Cc:     Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 4/6] f2fs: should avoid recursive filesystem ops

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

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/file.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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;
-- 
2.19.0.605.g01d371f741-goog