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zram: change parameter from vaild_io_request()

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This patch changes parameter of valid_io_request for common usage.  The
purpose of valid_io_request() is to determine if bio request is valid or
not.

This patch use I/O start address and size instead of a BIO parameter for
common usage.

Signed-off-by: karam.lee <karam.lee@lge.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: <seungho1.park@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
karam.lee 2014-12-12 16:56:50 -08:00 committed by Linus Torvalds
parent b627cff3d3
commit 54850e73e8
1 changed files with 8 additions and 8 deletions
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16
drivers/block/zram/zram_drv.c
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@ -287,19 +287,18 @@ static inline int is_partial_io(struct bio_vec *bvec)
/*
* Check if request is within bounds and aligned on zram logical blocks.
*/
static inline int valid_io_request(struct zram *zram, struct bio *bio)
static inline int valid_io_request(struct zram *zram,
sector_t start, unsigned int size)
{
u64 start, end, bound;
u64 end, bound;
/* unaligned request */
if (unlikely(bio->bi_iter.bi_sector &
(ZRAM_SECTOR_PER_LOGICAL_BLOCK - 1)))
if (unlikely(start & (ZRAM_SECTOR_PER_LOGICAL_BLOCK - 1)))
return 0;
if (unlikely(bio->bi_iter.bi_size & (ZRAM_LOGICAL_BLOCK_SIZE - 1)))
if (unlikely(size & (ZRAM_LOGICAL_BLOCK_SIZE - 1)))
return 0;
start = bio->bi_iter.bi_sector;
end = start + (bio->bi_iter.bi_size >> SECTOR_SHIFT);
end = start + (size >> SECTOR_SHIFT);
bound = zram->disksize >> SECTOR_SHIFT;
/* out of range range */
if (unlikely(start >= bound || end > bound || start > end))
@ -915,7 +914,8 @@ static void zram_make_request(struct request_queue *queue, struct bio *bio)
if (unlikely(!init_done(zram)))
goto error;
if (!valid_io_request(zram, bio)) {
if (!valid_io_request(zram, bio->bi_iter.bi_sector,
bio->bi_iter.bi_size)) {
atomic64_inc(&zram->stats.invalid_io);
goto error;
}