diff options
| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2021-06-09 18:32:48 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2021-06-17 15:51:20 +0200 |
| commit | c28a61471c5898e832c6e8634b2659249761b833 (patch) | |
| tree | d4cf1a5dc7a2157d2fdb246e342feb88c156b4ba | |
| parent | 7860569ad47f9fbd7c9f93a5c2b7d2a18e4af831 (diff) | |
| download | linux-stable-c28a61471c5898e832c6e8634b2659249761b833.tar.gz linux-stable-c28a61471c5898e832c6e8634b2659249761b833.tar.bz2 linux-stable-c28a61471c5898e832c6e8634b2659249761b833.zip | |
block: export blk_next_bio()
The block layer provides emulation of zone management operations
targeting all zones of a zoned block device only for the zone reset
operation (REQ_OP_ZONE_RESET). In order to correctly implement
exporting of zoned block devices with NVMeOF, emulating zone management
operations targeting all zones of a device is also necessary for the
open, close and finish zone operations (REQ_OP_ZONE_OPEN,
REQ_OP_ZONE_CLOSE and REQ_OP_ZONE_FINISH).
Instead of duplicating the code, export the existing helper from block
layer so we can use a bio chaining pattern that is present in the block
layer for REQ_OP_ZONE RESET all emulation in the NVMeOF zoned block
device backend.
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | block/blk-lib.c | 1 | ||||
| -rw-r--r-- | include/linux/bio.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c index 7b256131b20b..9f09beadcbe3 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -21,6 +21,7 @@ struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp) return new; } +EXPORT_SYMBOL_GPL(blk_next_bio); int __blkdev_issue_discard(struct block_device *bdev, sector_t sector, sector_t nr_sects, gfp_t gfp_mask, int flags, diff --git a/include/linux/bio.h b/include/linux/bio.h index a0b4cfdf62a4..b2491ead22a0 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -822,4 +822,6 @@ static inline void bio_set_polled(struct bio *bio, struct kiocb *kiocb) bio->bi_opf |= REQ_NOWAIT; } +struct bio *blk_next_bio(struct bio *bio, unsigned int nr_pages, gfp_t gfp); + #endif /* __LINUX_BIO_H */ |