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authorJens Axboe <axboe@kernel.dk>2018-08-14 19:52:40 +0300
committerJens Axboe <axboe@kernel.dk>2018-08-14 19:52:40 +0300
commitb089cfd95d32638335c551651a8e00fd2c4edb0b (patch)
tree5e48ee9470ecab0bd4525fcb93ab97a9f6b583d0
parenteb2b3d034511f7f5f5fa781b9354ea4d5dbd4fc5 (diff)
downloadlinux-b089cfd95d32638335c551651a8e00fd2c4edb0b.tar.xz
block: don't warn for flush on read-only device
Don't warn for a flush issued to a read-only device. It's not strictly a writable command, as it doesn't change any on-media data by itself. Reported-by: Stefan Agner <stefan@agner.ch> Fixes: 721c7fc701c7 ("block: fail op_is_write() requests to read-only partitions") Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/blk-core.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 49af34bf2119..7aeef19704f2 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -2162,7 +2162,9 @@ static inline bool should_fail_request(struct hd_struct *part,
static inline bool bio_check_ro(struct bio *bio, struct hd_struct *part)
{
- if (part->policy && op_is_write(bio_op(bio))) {
+ const int op = bio_op(bio);
+
+ if (part->policy && (op_is_write(op) && !op_is_flush(op))) {
char b[BDEVNAME_SIZE];
printk(KERN_ERR