[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH 14/27] block: add a bdev_stable_writes helper
Add a helper to check the stable writes flag based on the block_device instead of having to poke into the block layer internal request_queue. Signed-off-by: Christoph Hellwig <hch@xxxxxx> Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> --- drivers/md/dm-table.c | 4 +--- fs/super.c | 2 +- include/linux/blkdev.h | 6 ++++++ mm/swapfile.c | 2 +- 4 files changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 5e38d0dd009d5..d46839faa0ca5 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1950,9 +1950,7 @@ static int device_requires_stable_pages(struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data) { - struct request_queue *q = bdev_get_queue(dev->bdev); - - return blk_queue_stable_writes(q); + return bdev_stable_writes(dev->bdev); } int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, diff --git a/fs/super.c b/fs/super.c index f1d4a193602d6..60f57c7bc0a69 100644 --- a/fs/super.c +++ b/fs/super.c @@ -1204,7 +1204,7 @@ static int set_bdev_super(struct super_block *s, void *data) s->s_dev = s->s_bdev->bd_dev; s->s_bdi = bdi_get(s->s_bdev->bd_disk->bdi); - if (blk_queue_stable_writes(s->s_bdev->bd_disk->queue)) + if (bdev_stable_writes(s->s_bdev)) s->s_iflags |= SB_I_STABLE_WRITES; return 0; } diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 075b16d4560e7..a433798c3343e 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1330,6 +1330,12 @@ static inline bool bdev_nonrot(struct block_device *bdev) return blk_queue_nonrot(bdev_get_queue(bdev)); } +static inline bool bdev_stable_writes(struct block_device *bdev) +{ + return test_bit(QUEUE_FLAG_STABLE_WRITES, + &bdev_get_queue(bdev)->queue_flags); +} + static inline bool bdev_write_cache(struct block_device *bdev) { return test_bit(QUEUE_FLAG_WC, &bdev_get_queue(bdev)->queue_flags); diff --git a/mm/swapfile.c b/mm/swapfile.c index d5ab7ec4d92ca..4069f17a82c8e 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3065,7 +3065,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) goto bad_swap_unlock_inode; } - if (p->bdev && blk_queue_stable_writes(p->bdev->bd_disk->queue)) + if (p->bdev && bdev_stable_writes(p->bdev)) p->flags |= SWP_STABLE_WRITES; if (p->bdev && p->bdev->bd_disk->fops->rw_page) -- 2.30.2
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