diff options
| author | Christoph Hellwig <hch@lst.de> | 2025-05-05 10:11:25 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-05-05 13:22:39 -0600 |
| commit | eeadd68e2a5f6bfe0bf1038ec49e3a8d99eb5fe8 (patch) | |
| tree | 4db0814241216dff26f4175195a6a5971cd1ef65 /include | |
| parent | a9437f6a1d8d0b3787fe6ff03d9aab4d3fe9b940 (diff) | |
block: remove bounce buffering support
The block layer bounce buffering support is unused now, remove it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20250505081138.3435992-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blk_types.h | 1 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 5 | ||||
| -rw-r--r-- | include/trace/events/block.h | 15 | ||||
| -rw-r--r-- | include/uapi/linux/blktrace_api.h | 2 |
4 files changed, 2 insertions, 21 deletions
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index dce7615c35e7..5a46067e85b1 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -286,7 +286,6 @@ struct bio { enum { BIO_PAGE_PINNED, /* Unpin pages in bio_release_pages() */ BIO_CLONED, /* doesn't own data */ - BIO_BOUNCED, /* bio is a bounce bio */ BIO_QUIET, /* Make BIO Quiet */ BIO_CHAIN, /* chained bio, ->bi_remaining in effect */ BIO_REFFED, /* bio has elevated ->bi_cnt */ diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index f3d74f9dae8e..5ccb961ee2ae 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -331,9 +331,6 @@ typedef unsigned int __bitwise blk_features_t; /* skip this queue in blk_mq_(un)quiesce_tagset */ #define BLK_FEAT_SKIP_TAGSET_QUIESCE ((__force blk_features_t)(1u << 13)) -/* bounce all highmem pages */ -#define BLK_FEAT_BOUNCE_HIGH ((__force blk_features_t)(1u << 14)) - /* undocumented magic for bcache */ #define BLK_FEAT_RAID_PARTIAL_STRIPES_EXPENSIVE \ ((__force blk_features_t)(1u << 15)) @@ -347,7 +344,7 @@ typedef unsigned int __bitwise blk_features_t; */ #define BLK_FEAT_INHERIT_MASK \ (BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA | BLK_FEAT_ROTATIONAL | \ - BLK_FEAT_STABLE_WRITES | BLK_FEAT_ZONED | BLK_FEAT_BOUNCE_HIGH | \ + BLK_FEAT_STABLE_WRITES | BLK_FEAT_ZONED | \ BLK_FEAT_RAID_PARTIAL_STRIPES_EXPENSIVE) /* internal flags in queue_limits.flags */ diff --git a/include/trace/events/block.h b/include/trace/events/block.h index bd0ea07338eb..ad36e73b8579 100644 --- a/include/trace/events/block.h +++ b/include/trace/events/block.h @@ -361,21 +361,6 @@ DECLARE_EVENT_CLASS(block_bio, ); /** - * block_bio_bounce - used bounce buffer when processing block operation - * @bio: block operation - * - * A bounce buffer was used to handle the block operation @bio in @q. - * This occurs when hardware limitations prevent a direct transfer of - * data between the @bio data memory area and the IO device. Use of a - * bounce buffer requires extra copying of data and decreases - * performance. - */ -DEFINE_EVENT(block_bio, block_bio_bounce, - TP_PROTO(struct bio *bio), - TP_ARGS(bio) -); - -/** * block_bio_backmerge - merging block operation to the end of an existing operation * @bio: new block operation to merge * diff --git a/include/uapi/linux/blktrace_api.h b/include/uapi/linux/blktrace_api.h index 690621b610e5..1bfb635e309b 100644 --- a/include/uapi/linux/blktrace_api.h +++ b/include/uapi/linux/blktrace_api.h @@ -49,7 +49,7 @@ enum blktrace_act { __BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */ __BLK_TA_INSERT, /* insert request */ __BLK_TA_SPLIT, /* bio was split */ - __BLK_TA_BOUNCE, /* bio was bounced */ + __BLK_TA_BOUNCE, /* unused, was: bio was bounced */ __BLK_TA_REMAP, /* bio was remapped */ __BLK_TA_ABORT, /* request aborted */ __BLK_TA_DRV_DATA, /* driver-specific binary data */ |