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authorMike Christie <mchristi@redhat.com>2016-08-04 23:23:34 +0300
committerJens Axboe <axboe@fb.com>2016-08-04 23:25:33 +0300
commitabf545484d31b68777a85c5c8f5b4bcde08283eb (patch)
treeee91e0a9e679e13cff54ede6b6b489627d72c1b1 /drivers
parentc1c87c2ba9ec06d8ba9e8a26c18c67a2ba9cd9c1 (diff)
downloadlinux-abf545484d31b68777a85c5c8f5b4bcde08283eb.tar.xz
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')
-rw-r--r--drivers/block/brd.c17
-rw-r--r--drivers/block/zram/zram_drv.c28
-rw-r--r--drivers/nvdimm/btt.c18
-rw-r--r--drivers/nvdimm/pmem.c12
4 files changed, 37 insertions, 38 deletions
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 3022dad24071..3439b28cce8b 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -300,20 +300,20 @@ static void copy_from_brd(void *dst, struct brd_device *brd,
* Process a single bvec of a bio.
*/
static int brd_do_bvec(struct brd_device *brd, struct page *page,
- unsigned int len, unsigned int off, int rw,
+ unsigned int len, unsigned int off, int op,
sector_t sector)
{
void *mem;
int err = 0;
- if (rw != READ) {
+ if (op_is_write(op)) {
err = copy_to_brd_setup(brd, sector, len);
if (err)
goto out;
}
mem = kmap_atomic(page);
- if (rw == READ) {
+ if (!op_is_write(op)) {
copy_from_brd(mem + off, brd, sector, len);
flush_dcache_page(page);
} else {
@@ -330,7 +330,6 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
{
struct block_device *bdev = bio->bi_bdev;
struct brd_device *brd = bdev->bd_disk->private_data;
- int rw;
struct bio_vec bvec;
sector_t sector;
struct bvec_iter iter;
@@ -347,14 +346,12 @@ static blk_qc_t brd_make_request(struct request_queue *q, struct bio *bio)
goto out;
}
- rw = bio_data_dir(bio);
-
bio_for_each_segment(bvec, bio, iter) {
unsigned int len = bvec.bv_len;
int err;
err = brd_do_bvec(brd, bvec.bv_page, len,
- bvec.bv_offset, rw, sector);
+ bvec.bv_offset, bio_op(bio), sector);
if (err)
goto io_error;
sector += len >> SECTOR_SHIFT;
@@ -369,11 +366,11 @@ io_error:
}
static int brd_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, int op)
{
struct brd_device *brd = bdev->bd_disk->private_data;
- int err = brd_do_bvec(brd, page, PAGE_SIZE, 0, rw, sector);
- page_endio(page, rw & WRITE, err);
+ int err = brd_do_bvec(brd, page, PAGE_SIZE, 0, op, sector);
+ page_endio(page, op, err);
return err;
}
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;
}
diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c
index 9dce03f420eb..7cf3bdfaf809 100644
--- a/drivers/nvdimm/btt.c
+++ b/drivers/nvdimm/btt.c
@@ -1133,11 +1133,11 @@ static int btt_write_pg(struct btt *btt, struct bio_integrity_payload *bip,
static int btt_do_bvec(struct btt *btt, struct bio_integrity_payload *bip,
struct page *page, unsigned int len, unsigned int off,
- int rw, sector_t sector)
+ int op, sector_t sector)
{
int ret;
- if (rw == READ) {
+ if (!op_is_write(op)) {
ret = btt_read_pg(btt, bip, page, off, sector, len);
flush_dcache_page(page);
} else {
@@ -1155,7 +1155,7 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
struct bvec_iter iter;
unsigned long start;
struct bio_vec bvec;
- int err = 0, rw;
+ int err = 0;
bool do_acct;
/*
@@ -1170,7 +1170,6 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
}
do_acct = nd_iostat_start(bio, &start);
- rw = bio_data_dir(bio);
bio_for_each_segment(bvec, bio, iter) {
unsigned int len = bvec.bv_len;
@@ -1181,11 +1180,12 @@ static blk_qc_t btt_make_request(struct request_queue *q, struct bio *bio)
BUG_ON(len % btt->sector_size);
err = btt_do_bvec(btt, bip, bvec.bv_page, len, bvec.bv_offset,
- rw, iter.bi_sector);
+ bio_op(bio), iter.bi_sector);
if (err) {
dev_info(&btt->nd_btt->dev,
"io error in %s sector %lld, len %d,\n",
- (rw == READ) ? "READ" : "WRITE",
+ (op_is_write(bio_op(bio))) ? "WRITE" :
+ "READ",
(unsigned long long) iter.bi_sector, len);
bio->bi_error = err;
break;
@@ -1200,12 +1200,12 @@ out:
}
static int btt_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, int op)
{
struct btt *btt = bdev->bd_disk->private_data;
- btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, rw, sector);
- page_endio(page, rw & WRITE, 0);
+ btt_do_bvec(btt, NULL, page, PAGE_SIZE, 0, op, sector);
+ page_endio(page, op, 0);
return 0;
}
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index b511099457db..d64d92481c1d 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -67,7 +67,7 @@ static void pmem_clear_poison(struct pmem_device *pmem, phys_addr_t offset,
}
static int pmem_do_bvec(struct pmem_device *pmem, struct page *page,
- unsigned int len, unsigned int off, int rw,
+ unsigned int len, unsigned int off, int op,
sector_t sector)
{
int rc = 0;
@@ -79,7 +79,7 @@ static int pmem_do_bvec(struct pmem_device *pmem, struct page *page,
if (unlikely(is_bad_pmem(&pmem->bb, sector, len)))
bad_pmem = true;
- if (rw == READ) {
+ if (!op_is_write(op)) {
if (unlikely(bad_pmem))
rc = -EIO;
else {
@@ -134,7 +134,7 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
do_acct = nd_iostat_start(bio, &start);
bio_for_each_segment(bvec, bio, iter) {
rc = pmem_do_bvec(pmem, bvec.bv_page, bvec.bv_len,
- bvec.bv_offset, bio_data_dir(bio),
+ bvec.bv_offset, bio_op(bio),
iter.bi_sector);
if (rc) {
bio->bi_error = rc;
@@ -152,12 +152,12 @@ static blk_qc_t pmem_make_request(struct request_queue *q, struct bio *bio)
}
static int pmem_rw_page(struct block_device *bdev, sector_t sector,
- struct page *page, int rw)
+ struct page *page, int op)
{
struct pmem_device *pmem = bdev->bd_queue->queuedata;
int rc;
- rc = pmem_do_bvec(pmem, page, PAGE_SIZE, 0, rw, sector);
+ rc = pmem_do_bvec(pmem, page, PAGE_SIZE, 0, op, sector);
/*
* The ->rw_page interface is subtle and tricky. The core
@@ -166,7 +166,7 @@ static int pmem_rw_page(struct block_device *bdev, sector_t sector,
* caused by double completion.
*/
if (rc == 0)
- page_endio(page, rw & WRITE, 0);
+ page_endio(page, op, 0);
return rc;
}