linux-kernel - [PATCH 1/2] f2fs: prevent atomic write on pinned file

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Message-ID: <20240311235921.1832684-1-daeho43@gmail.com>
Date: Mon, 11 Mar 2024 16:59:19 -0700
From: Daeho Jeong <daeho43@...il.com>
To: linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net,
	kernel-team@...roid.com
Cc: Daeho Jeong <daehojeong@...gle.com>
Subject: [PATCH 1/2] f2fs: prevent atomic write on pinned file

From: Daeho Jeong <daehojeong@...gle.com>

Since atomic write way was changed to out-place-update, we should
prevent it on pinned files.

Signed-off-by: Daeho Jeong <daehojeong@...gle.com>
---
 fs/f2fs/file.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 1c044fb19c87..82277e95c88f 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2085,7 +2085,8 @@ static int f2fs_ioc_start_atomic_write(struct file *filp, bool truncate)
 
 	inode_lock(inode);
 
-	if (!f2fs_disable_compressed_file(inode)) {
+	if (!f2fs_disable_compressed_file(inode) ||
+			f2fs_is_pinned_file(inode)) {
 		ret = -EINVAL;
 		goto out;
 	}
-- 
2.44.0.278.ge034bb2e1d-goog