From: Jaegeuk Kim <jaegeuk@kernel.org>
Date: Sat, 14 Sep 2024 21:44:10 +0000 (+0000)
Subject: f2fs: allow F2FS_IPU_NOCACHE for pinned file
X-Git-Tag: v6.12-rc1~59^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ae87b9c2dc9800e6ab52febd09341140599ff8e3;p=thirdparty%2Fkernel%2Flinux.git

f2fs: allow F2FS_IPU_NOCACHE for pinned file

This patch allows f2fs to submit bios of in-place writes on pinned file.

Reviewed-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index d18931b7b0945..c56e8c8739352 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -792,7 +792,8 @@ out:
 	if (!strcmp(a->attr.name, "ipu_policy")) {
 		if (t >= BIT(F2FS_IPU_MAX))
 			return -EINVAL;
-		if (t && f2fs_lfs_mode(sbi))
+		/* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */
+		if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE)))
 			return -EINVAL;
 		SM_I(sbi)->ipu_policy = (unsigned int)t;
 		return count;