linux-kernel - [PATCH v2] f2fs: zone: fix to don't trigger OPU on pinfile for direct IO

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: Windows password security audit tool. GUI, reports in PDF.

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

Date: Sun, 28 Apr 2024 09:12:36 +0800
From: Chao Yu <chao@...nel.org>
To: jaegeuk@...nel.org
Cc: linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Chao Yu <chao@...nel.org>,
	Daeho Jeong <daeho43@...il.com>
Subject: [PATCH v2] f2fs: zone: fix to don't trigger OPU on pinfile for direct IO

Otherwise, it breaks pinfile's sematics.

Cc: Daeho Jeong <daeho43@...il.com>
Signed-off-by: Chao Yu <chao@...nel.org>
---
v2:
- fix to disallow OPU on pinfile no matter what device type f2fs uses.
 fs/f2fs/data.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index d8e4434e8801..56600dd43834 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1595,8 +1595,9 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, int flag)
 	}
 
 	/* use out-place-update for direct IO under LFS mode */
-	if (map->m_may_create &&
-	    (is_hole || (f2fs_lfs_mode(sbi) && flag == F2FS_GET_BLOCK_DIO))) {
+	if (map->m_may_create && (is_hole ||
+		(flag == F2FS_GET_BLOCK_DIO && f2fs_lfs_mode(sbi) &&
+		!f2fs_is_pinned_file(inode)))) {
 		if (unlikely(f2fs_cp_error(sbi))) {
 			err = -EIO;
 			goto sync_out;
-- 
2.40.1