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authorChristoph Hellwig <hch@lst.de>2021-10-12 14:12:24 +0300
committerJens Axboe <axboe@kernel.dk>2021-10-18 15:17:36 +0300
commit3e08773c3841e9db7a520908cc2b136a77d275ff (patch)
tree5dce4a3944899f0eb1370a92130e89134da2a714 /drivers/nvdimm/pmem.c
parent19416123ab3e1348b3532347af221d8f60838431 (diff)
downloadlinux-3e08773c3841e9db7a520908cc2b136a77d275ff.tar.xz
block: switch polling to be bio based
Replace the blk_poll interface that requires the caller to keep a queue and cookie from the submissions with polling based on the bio. Polling for the bio itself leads to a few advantages: - the cookie construction can made entirely private in blk-mq.c - the caller does not need to remember the request_queue and cookie separately and thus sidesteps their lifetime issues - keeping the device and the cookie inside the bio allows to trivially support polling BIOs remapping by stacking drivers - a lot of code to propagate the cookie back up the submission path can be removed entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Mark Wunderlich <mark.wunderlich@intel.com> Link: https://lore.kernel.org/r/20211012111226.760968-15-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvdimm/pmem.c')
-rw-r--r--drivers/nvdimm/pmem.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index ef4950f80832..a67a3ad1d413 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -190,7 +190,7 @@ static blk_status_t pmem_do_write(struct pmem_device *pmem,
return rc;
}
-static blk_qc_t pmem_submit_bio(struct bio *bio)
+static void pmem_submit_bio(struct bio *bio)
{
int ret = 0;
blk_status_t rc = 0;
@@ -229,7 +229,6 @@ static blk_qc_t pmem_submit_bio(struct bio *bio)
bio->bi_status = errno_to_blk_status(ret);
bio_endio(bio);
- return BLK_QC_T_NONE;
}
static int pmem_rw_page(struct block_device *bdev, sector_t sector,