From: chuguangqing <chuguangqing@inspur.com>
Date: Wed, 6 Aug 2025 02:28:49 +0000 (+0800)
Subject: fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=1534f72dc2a11ded38b0e0268fbcc0ca24e9fd4a;p=users%2Fhch%2Fmisc.git

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@inspur.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
---

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;