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zram: don't pass a bvec to __zram_bvec_write

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__zram_bvec_write only extracts the page from __zram_bvec_write and always
expects a full page of input.  Pass the page directly instead of the bvec
and rename the function to zram_write_page.

Link: https://lkml.kernel.org/r/20230411171459.567614-13-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Christoph Hellwig 2023-04-11 19:14:54 +02:00 committed by Andrew Morton
parent 889ae9169b
commit 6aa4b839e7
1 changed files with 4 additions and 10 deletions
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14
drivers/block/zram/zram_drv.c
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@ -1443,8 +1443,7 @@ static int zram_bvec_read(struct zram *zram, struct bio_vec *bvec,
return zram_read_page(zram, bvec->bv_page, index, bio, false);
}
static int __zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
u32 index, struct bio *bio)
static int zram_write_page(struct zram *zram, struct page *page, u32 index)
{
int ret = 0;
unsigned long alloced_pages;
@ -1452,7 +1451,6 @@ static int __zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
unsigned int comp_len = 0;
void *src, *dst, *mem;
struct zcomp_strm *zstrm;
struct page *page = bvec->bv_page;
unsigned long element = 0;
enum zram_pageflags flags = 0;
@ -1573,11 +1571,9 @@ out:
static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
u32 index, int offset, struct bio *bio)
{
struct page *page = bvec->bv_page;
int ret;
struct page *page = NULL;
struct bio_vec vec;
vec = *bvec;
if (is_partial_io(bvec)) {
/*
* This is a partial IO. We need to read the full page
@ -1592,11 +1588,9 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec,
goto out;
memcpy_from_bvec(page_address(page) + offset, bvec);
bvec_set_page(&vec, page, PAGE_SIZE, 0);
}
ret = __zram_bvec_write(zram, &vec, index, bio);
ret = zram_write_page(zram, page, index);
out:
if (is_partial_io(bvec))
__free_page(page);
@ -1711,7 +1705,7 @@ static int zram_recompress(struct zram *zram, u32 index, struct page *page,
/*
* No direct reclaim (slow path) for handle allocation and no
* re-compression attempt (unlike in __zram_bvec_write()) since
* re-compression attempt (unlike in zram_write_bvec()) since
* we already have stored that object in zsmalloc. If we cannot
* alloc memory for recompressed object then we bail out and
* simply keep the old (existing) object in zsmalloc.