From: Christoph Hellwig hch@lst.de
stable inclusion from stable-v6.6.10 commit b5f63f5e8a6820a6093b6caf35bb0f7c946c7d72 bugzilla: https://gitee.com/openeuler/kernel/issues/I99TJK
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 02d374f3418df577c850f0cd45c3da9245ead547 ]
For the QUEUE_FLAG_HW_WC to actually work, it needs to have a separate number from QUEUE_FLAG_FUA, doh.
Fixes: 43c9835b144c ("block: don't allow enabling a cache on devices that don't support it") Signed-off-by: Christoph Hellwig hch@lst.de Link: https://lore.kernel.org/r/20231226081524.180289-1-hch@lst.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: ZhangPeng zhangpeng362@huawei.com --- include/linux/blkdev.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 85881cff0bd2..26ddce79dd8b 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -584,7 +584,7 @@ struct request_queue { #define QUEUE_FLAG_ADD_RANDOM 10 /* Contributes to random pool */ #define QUEUE_FLAG_SYNCHRONOUS 11 /* always completes in submit context */ #define QUEUE_FLAG_SAME_FORCE 12 /* force complete on same CPU */ -#define QUEUE_FLAG_HW_WC 18 /* Write back caching supported */ +#define QUEUE_FLAG_HW_WC 13 /* Write back caching supported */ #define QUEUE_FLAG_INIT_DONE 14 /* queue is initialized */ #define QUEUE_FLAG_STABLE_WRITES 15 /* don't modify blks until WB is done */ #define QUEUE_FLAG_POLL 16 /* IO polling enabled if set */