linux-kernel - [PATCH 1/1] fs: ext4: change GFP_KERNEL to GFP

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Message-ID: <20250806022849.1415-2-chuguangqing@inspur.com>
Date: Wed, 6 Aug 2025 10:28:49 +0800
From: chuguangqing <chuguangqing@...pur.com>
To: <tytso@....edu>, <adilger.kernel@...ger.ca>
CC: <linux-ext4@...r.kernel.org>, <linux-kernel@...r.kernel.org>, chuguangqing
	<chuguangqing@...pur.com>
Subject: [PATCH 1/1] fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock

The parent function ext4_xattr_inode_lookup_create already uses GFP_NOFS for memory alloction, so the function ext4_xattr_inode_cache_find should use same gfp_flag.

Signed-off-by: chuguangqing <chuguangqing@...pur.com>
---
 fs/ext4/xattr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 5a6fe1513fd2..7743d81b2f21 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1530,7 +1530,7 @@ ext4_xattr_inode_cache_find(struct inode *inode, const void *value,
 	WARN_ON_ONCE(ext4_handle_valid(journal_current_handle()) &&
 		     !(current->flags & PF_MEMALLOC_NOFS));
 
-	ea_data = kvmalloc(value_len, GFP_KERNEL);
+	ea_data = kvmalloc(value_len, GFP_NOFS);
 	if (!ea_data) {
 		mb_cache_entry_put(ea_inode_cache, ce);
 		return NULL;
-- 
2.43.5