linux-ext4 - [PATCH v3 3/3] tmpfs: use inode_set_cached

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241120112037.822078-4-mjguzik@gmail.com>
Date: Wed, 20 Nov 2024 12:20:36 +0100
From: Mateusz Guzik <mjguzik@...il.com>
To: brauner@...nel.org
Cc: viro@...iv.linux.org.uk,
	jack@...e.cz,
	linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	hughd@...gle.com,
	linux-ext4@...r.kernel.org,
	tytso@....edu,
	linux-mm@...ck.org,
	Mateusz Guzik <mjguzik@...il.com>
Subject: [PATCH v3 3/3] tmpfs: use inode_set_cached_link()

Signed-off-by: Mateusz Guzik <mjguzik@...il.com>
---
 mm/shmem.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/mm/shmem.c b/mm/shmem.c
index c7881e16f4be..135f38eb2ff1 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -3868,6 +3868,7 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir,
 	int len;
 	struct inode *inode;
 	struct folio *folio;
+	char *link;
 
 	len = strlen(symname) + 1;
 	if (len > PAGE_SIZE)
@@ -3889,12 +3890,13 @@ static int shmem_symlink(struct mnt_idmap *idmap, struct inode *dir,
 
 	inode->i_size = len-1;
 	if (len <= SHORT_SYMLINK_LEN) {
-		inode->i_link = kmemdup(symname, len, GFP_KERNEL);
-		if (!inode->i_link) {
+		link = kmemdup(symname, len, GFP_KERNEL);
+		if (!link) {
 			error = -ENOMEM;
 			goto out_remove_offset;
 		}
 		inode->i_op = &shmem_short_symlink_operations;
+		inode_set_cached_link(inode, link, len - 1);
 	} else {
 		inode_nohighmem(inode);
 		inode->i_mapping->a_ops = &shmem_aops;
-- 
2.43.0