From: Jan Kara <jack@suse.cz>
Date: Tue, 9 Jan 2024 11:15:43 +0000 (+0100)
Subject: ext2: Drop GFP_NOFS use in ext2_get_blocks()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=36975616ea5837955ce9bbe84095680c940fe025;p=linux.git

ext2: Drop GFP_NOFS use in ext2_get_blocks()

ext2_get_blocks() calls sb_issue_zeroout() with GFP_NOFS flag. However
the call is performed under inode->i_rwsem and
EXT2_I(inode)->i_truncate_mutex neither of which is acquired during
direct fs reclaim. So it is safe to change the gfp mask to GFP_KERNEL.

Signed-off-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 5a4272b2c6b0a..f3d570a9302b0 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -754,7 +754,7 @@ static int ext2_get_blocks(struct inode *inode,
 		 */
 		err = sb_issue_zeroout(inode->i_sb,
 				le32_to_cpu(chain[depth-1].key), count,
-				GFP_NOFS);
+				GFP_KERNEL);
 		if (err) {
 			mutex_unlock(&ei->truncate_mutex);
 			goto cleanup;