diff mbox series

[2/6] fs: Block writes to mounted block devices

Message ID 20230704125702.23180-2-jack@suse.cz (mailing list archive)
State Superseded, archived
Headers show
Series block: Add config option to not allow writing to mounted devices | expand

Commit Message

Jan Kara July 4, 2023, 12:56 p.m. UTC 
Ask block layer to block writes to block devices mounted by filesystems.

Signed-off-by: Jan Kara <jack@suse.cz>
---
 include/linux/blkdev.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index ca467525e6e4..a1fb90f3887e 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1471,7 +1471,8 @@  struct blk_holder_ops {
  * as stored in sb->s_flags.
  */
 #define sb_open_mode(flags) \
-	(BLK_OPEN_READ | (((flags) & SB_RDONLY) ? 0 : BLK_OPEN_WRITE))
+	(BLK_OPEN_READ | BLK_OPEN_BLOCK_WRITES | \
+	 (((flags) & SB_RDONLY) ? 0 : BLK_OPEN_WRITE))
 
 struct bdev_handle {
 	struct block_device *bdev;