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authorDamien Le Moal <damien.lemoal@wdc.com>2018-10-12 19:08:47 +0900
committerJens Axboe <axboe@kernel.dk>2018-10-25 11:17:40 -0600
commita2d6b3a2d39005ab4d4a83481a7db092ebf0e9d6 (patch)
treed099578f43e9d1136c792485f4231a7fe1dc71b3 /block/blk.h
parent65e4e3eee83d7a4ad7e8c5175b2a0ddfd3b5685f (diff)
downloadlinux-a2d6b3a2d39005ab4d4a83481a7db092ebf0e9d6.tar.bz2
block: Improve zone reset execution
There is no need to synchronously execute all REQ_OP_ZONE_RESET BIOs necessary to reset a range of zones. Similarly to what is done for discard BIOs in blk-lib.c, all zone reset BIOs can be chained and executed asynchronously and a synchronous call done only for the last BIO of the chain. Modify blkdev_reset_zones() to operate similarly to blkdev_issue_discard() using the next_bio() helper for chaining BIOs. To avoid code duplication of that function in blk_zoned.c, rename next_bio() into blk_next_bio() and declare it as a block internal function in blk.h. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk.h')
-rw-r--r--block/blk.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk.h b/block/blk.h
index 3d2aecba96a4..93574baaa6b8 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -488,4 +488,6 @@ extern int blk_iolatency_init(struct request_queue *q);
static inline int blk_iolatency_init(struct request_queue *q) { return 0; }
#endif
+struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp);
+
#endif /* BLK_INTERNAL_H */