The patch titled
Subject: zram: move discard handling to zram_submit_bio
has been added to the -mm mm-unstable branch. Its filename is
zram-move-discard-handling-to-zram_submit_bio.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zram-move-discard-handling-to-zram_submit_bio.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Christoph Hellwig <hch@xxxxxx>
Subject: zram: move discard handling to zram_submit_bio
Date: Thu, 6 Apr 2023 16:40:50 +0200
Switch on the bio operation in zram_submit_bio and only call into
__zram_make_request for read and write operations.
Link: https://lkml.kernel.org/r/20230406144102.149231-5-hch@xxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 23 +++++++++++++----------
1 file changed, 13 insertions(+), 10 deletions(-)
--- a/drivers/block/zram/zram_drv.c~zram-move-discard-handling-to-zram_submit_bio
+++ a/drivers/block/zram/zram_drv.c
@@ -1964,15 +1964,6 @@ static void __zram_make_request(struct z
struct bio_vec bv;
unsigned long start_time;
- switch (bio_op(bio)) {
- case REQ_OP_DISCARD:
- case REQ_OP_WRITE_ZEROES:
- zram_bio_discard(zram, bio);
- return;
- default:
- break;
- }
-
start_time = bio_start_io_acct(bio);
bio_for_each_segment(bv, bio, iter) {
u32 index = iter.bi_sector >> SECTORS_PER_PAGE_SHIFT;
@@ -1996,7 +1987,19 @@ static void zram_submit_bio(struct bio *
{
struct zram *zram = bio->bi_bdev->bd_disk->private_data;
- __zram_make_request(zram, bio);
+ switch (bio_op(bio)) {
+ case REQ_OP_READ:
+ case REQ_OP_WRITE:
+ __zram_make_request(zram, bio);
+ break;
+ case REQ_OP_DISCARD:
+ case REQ_OP_WRITE_ZEROES:
+ zram_bio_discard(zram, bio);
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ bio_endio(bio);
+ }
}
static void zram_slot_free_notify(struct block_device *bdev,
_
Patches currently in -mm which might be from hch@xxxxxx are
zram-remove-valid_io_request.patch
zram-make-zram_bio_discard-more-self-contained.patch
zram-simplify-bvec-iteration-in-__zram_make_request.patch
zram-move-discard-handling-to-zram_submit_bio.patch
zram-return-early-on-error-in-zram_bvec_rw.patch
zram-refactor-highlevel-read-and-write-handling.patch
zram-dont-use-highmem-for-the-bounce-buffer-in-zram_bvec_readwrite.patch
zram-rename-__zram_bvec_read-to-zram_read_page.patch
zram-directly-call-zram_read_page-in-writeback_store.patch
zram-refactor-zram_bdev_read.patch
zram-dont-pass-a-bvec-to-__zram_bvec_write.patch
zram-refactor-zram_bdev_write.patch
zram-pass-a-page-to-read_from_bdev.patch
zram-dont-return-errors-from-read_from_bdev_async.patch
zram-fix-synchronous-reads.patch
zram-return-errors-from-read_from_bdev_sync.patch
