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authorMike Christie <mchristi@redhat.com>2016-08-04 14:23:34 -0600
committerJens Axboe <axboe@fb.com>2016-08-04 14:25:33 -0600
commitabf545484d31b68777a85c5c8f5b4bcde08283eb (patch)
treeee91e0a9e679e13cff54ede6b6b489627d72c1b1 /drivers/block/zram
parentc1c87c2ba9ec06d8ba9e8a26c18c67a2ba9cd9c1 (diff)
downloadlinux-abf545484d31b68777a85c5c8f5b4bcde08283eb.tar.bz2
mm/block: convert rw_page users to bio op use
The rw_page users were not converted to use bio/req ops. As a result bdev_write_page is not passing down REQ_OP_WRITE and the IOs will be sent down as reads. Signed-off-by: Mike Christie <mchristi@redhat.com> Fixes: 4e1b2d52a80d ("block, fs, drivers: remove REQ_OP compat defs and related code") Modified by me to: 1) Drop op_flags passing into ->rw_page(), as we don't use it. 2) Make op_is_write() and friends safe to use for !CONFIG_BLOCK Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/zram')
-rw-r--r--drivers/block/zram/zram_drv.c28
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 7454cf188c8e..ca29649c4b08 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -843,15 +843,15 @@ static void zram_bio_discard(struct zram *zram, u32 index,
}
static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
- int offset, int rw)
+ int offset, int op)
{
unsigned long start_time = jiffies;
int ret;
- generic_start_io_acct(rw, bvec->bv_len >> SECTOR_SHIFT,
+ generic_start_io_acct(op, bvec->bv_len >> SECTOR_SHIFT,
&zram->disk->part0);
- if (rw == READ) {
+ if (!op_is_write(op)) {
atomic64_inc(&zram->stats.num_reads);
ret = zram_bvec_read(zram, bvec, index, offset);
} else {
@@ -859,10 +859,10 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
ret = zram_bvec_write(zram, bvec, index, offset);
}
- generic_end_io_acct(rw, &zram->disk->part0, start_time);
+ generic_end_io_acct(op, &zram->disk->part0, start_time);
if (unlikely(ret)) {
- if (rw == READ)
+ if (!op_is_write(op))
atomic64_inc(&zram->stats.failed_reads);
else
atomic64_inc(&zram->stats.failed_writes);
@@ -873,7 +873,7 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
static void __zram_make_request(struct zram *zram, struct bio *bio)
{
- int offset, rw;
+ int offset;
u32 index;
struct bio_vec bvec;
struct bvec_iter iter;
@@ -888,7 +888,6 @@ static void __zram_make_request(struct zram *zram, struct bio *bio)
return;
}
- rw = bio_data_dir(bio);
bio_for_each_segment(bvec, bio, iter) {
int max_transfer_size = PAGE_SIZE - offset;
@@ -903,15 +902,18 @@ static void __zram_make_request(struct zram *zram, struct bio *bio)
bv.bv_len = max_transfer_size;
bv.bv_offset = bvec.bv_offset;
- if (zram_bvec_rw(zram, &bv, index, offset, rw) < 0)
+ if (zram_bvec_rw(zram, &bv, index, offset,
+ bio_op(bio)) < 0)
goto out;
bv.bv_len = bvec.bv_len - max_transfer_size;
bv.bv_offset += max_transfer_size;
- if (zram_bvec_rw(zram, &bv, index + 1, 0, rw) < 0)
+ if (zram_bvec_rw(zram, &bv, index + 1, 0,
+ bio_op(bio)) < 0)
goto out;
} else
- if (zram_bvec_rw(zram, &bvec, index, offset, rw) < 0)
+ if (zram_bvec_rw(zram, &bvec, index, offset,
+ bio_op(bio)) < 0)
goto out;
update_position(&index, &offset, &bvec);
@@ -968,7 +970,7 @@ static void zram_slot_free_notify(struct block_device *bdev,
}
static int zram_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, int op)
{
int offset, err = -EIO;
u32 index;
@@ -992,7 +994,7 @@ static int zram_rw_page(struct block_device *bdev, sector_t sector,
bv.bv_len = PAGE_SIZE;
bv.bv_offset = 0;
- err = zram_bvec_rw(zram, &bv, index, offset, rw);
+ err = zram_bvec_rw(zram, &bv, index, offset, op);
put_zram:
zram_meta_put(zram);
out:
@@ -1005,7 +1007,7 @@ out:
* (e.g., SetPageError, set_page_dirty and extra works).
*/
if (err == 0)
- page_endio(page, rw, 0);
+ page_endio(page, op, 0);
return err;
}