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dm writecache: remove needless dereferences in __writecache_writeback_pmem() 

bio is already available so there is no need to access it in terms of
the wb pointer.

Signed-off-by: Huaisheng Ye <yehs1@lenovo.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Huaisheng Ye 2019-04-12 11:27:18 -04:00 committed by Mike Snitzer
parent 3f1637f210
commit 09f2d65630
1 changed files with 6 additions and 6 deletions
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12
drivers/md/dm-writecache.c
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@ -1478,9 +1478,9 @@ static void __writecache_writeback_pmem(struct dm_writecache *wc, struct writeba
bio = bio_alloc_bioset(GFP_NOIO, max_pages, &wc->bio_set);
wb = container_of(bio, struct writeback_struct, bio);
wb->wc = wc;
wb->bio.bi_end_io = writecache_writeback_endio;
bio_set_dev(&wb->bio, wc->dev->bdev);
wb->bio.bi_iter.bi_sector = read_original_sector(wc, e);
bio->bi_end_io = writecache_writeback_endio;
bio_set_dev(bio, wc->dev->bdev);
bio->bi_iter.bi_sector = read_original_sector(wc, e);
wb->page_offset = PAGE_SIZE;
if (max_pages <= WB_LIST_INLINE ||
unlikely(!(wb->wc_list = kmalloc_array(max_pages, sizeof(struct wc_entry *),
@ -1507,12 +1507,12 @@ static void __writecache_writeback_pmem(struct dm_writecache *wc, struct writeba
wb->wc_list[wb->wc_list_n++] = f;
e = f;
}
bio_set_op_attrs(&wb->bio, REQ_OP_WRITE, WC_MODE_FUA(wc) * REQ_FUA);
bio_set_op_attrs(bio, REQ_OP_WRITE, WC_MODE_FUA(wc) * REQ_FUA);
if (writecache_has_error(wc)) {
bio->bi_status = BLK_STS_IOERR;
bio_endio(&wb->bio);
bio_endio(bio);
} else {
submit_bio(&wb->bio);
submit_bio(bio);
}
__writeback_throttle(wc, wbl);