[PATCH 08/32] target: prepare for bi_rw split
From: Mike Christie
This patch prepares lio's submit_bio use for the next
patches that split bi_rw into a operation and flags field.
Instead of passing in a bitmap with both the operation and
flags mixed in, the callers will now pass them in seperately.
This patch modifies the code related to the submit_bio calls
so the flags and operation are seperated. When this is done
for all code, one of the later patches in the series will
the actual submit_bio call, so the patches are bisectable.
Signed-off-by: Mike Christie
---
drivers/target/target_core_iblock.c | 32 ++--
1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/drivers/target/target_core_iblock.c
b/drivers/target/target_core_iblock.c
index 0f19e11..25f75ab 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -354,14 +354,14 @@ iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32
sg_num)
return bio;
}
-static void iblock_submit_bios(struct bio_list *list, int rw)
+static void iblock_submit_bios(struct bio_list *list, int op, int op_flags)
{
struct blk_plug plug;
struct bio *bio;
blk_start_plug(&plug);
while ((bio = bio_list_pop(list)))
- submit_bio(rw, bio);
+ submit_bio(op | op_flags, bio);
blk_finish_plug(&plug);
}
@@ -480,7 +480,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
sectors -= 1;
}
- iblock_submit_bios(&list, WRITE);
+ iblock_submit_bios(&list, REQ_OP_WRITE, 0);
return 0;
fail_put_bios:
@@ -653,7 +653,8 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
u32 sg_num = sgl_nents;
sector_t block_lba;
unsigned bio_cnt;
- int rw = 0;
+ int op_flags = 0;
+ int op = 0;
int i;
if (data_direction == DMA_TO_DEVICE) {
@@ -664,17 +665,20 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
* is not enabled, or if initiator set the Force Unit Access
bit.
*/
if (q->flush_flags & REQ_FUA) {
- if (cmd->se_cmd_flags & SCF_FUA)
- rw = WRITE_FUA;
- else if (!(q->flush_flags & REQ_FLUSH))
- rw = WRITE_FUA;
- else
- rw = WRITE;
+ if (cmd->se_cmd_flags & SCF_FUA) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else if (!(q->flush_flags & REQ_FLUSH)) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else {
+ op = REQ_OP_WRITE;
+ }
} else {
- rw = WRITE;
+ op = REQ_OP_WRITE;
}
} else {
- rw = READ;
+ op = REQ_OP_READ;
}
/*
@@ -726,7 +730,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
while (bio_add_page(bio, sg_page(sg), sg->length, sg->offset)
!= sg->length) {
if (bio_cnt >= IBLOCK_MAX_BIO_PER_TASK) {
- iblock_submit_bios(&list, rw);
+ iblock_submit_bios(&list, op, op_flags);
bio_cnt = 0;
}
@@ -750,7 +754,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
goto fail_put_bios;
}
- iblock_submit_bios(&list, rw);
+ iblock_submit_bios(&list, op, op_flags);
iblock_complete_cmd(cmd);
return 0;
--
1.8.3.1
--
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[PATCH 08/32] target: prepare for bi_rw split
From: Mike Christie
This patch prepares lio's submit_bio use for the next
patches that split bi_rw into a operation and flags field.
Instead of passing in a bitmap with both the operation and
flags mixed in, the callers will now pass them in seperately.
This patch modifies the code related to the submit_bio calls
so the flags and operation are seperated. When this is done
for all code, one of the later patches in the series will
the actual submit_bio call, so the patches are bisectable.
Signed-off-by: Mike Christie
---
drivers/target/target_core_iblock.c | 32 ++--
1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/drivers/target/target_core_iblock.c
b/drivers/target/target_core_iblock.c
index 0f19e11..25f75ab 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -354,14 +354,14 @@ iblock_get_bio(struct se_cmd *cmd, sector_t lba, u32
sg_num)
return bio;
}
-static void iblock_submit_bios(struct bio_list *list, int rw)
+static void iblock_submit_bios(struct bio_list *list, int op, int op_flags)
{
struct blk_plug plug;
struct bio *bio;
blk_start_plug(&plug);
while ((bio = bio_list_pop(list)))
- submit_bio(rw, bio);
+ submit_bio(op | op_flags, bio);
blk_finish_plug(&plug);
}
@@ -480,7 +480,7 @@ iblock_execute_write_same(struct se_cmd *cmd)
sectors -= 1;
}
- iblock_submit_bios(&list, WRITE);
+ iblock_submit_bios(&list, REQ_OP_WRITE, 0);
return 0;
fail_put_bios:
@@ -653,7 +653,8 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
u32 sg_num = sgl_nents;
sector_t block_lba;
unsigned bio_cnt;
- int rw = 0;
+ int op_flags = 0;
+ int op = 0;
int i;
if (data_direction == DMA_TO_DEVICE) {
@@ -664,17 +665,20 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
* is not enabled, or if initiator set the Force Unit Access
bit.
*/
if (q->flush_flags & REQ_FUA) {
- if (cmd->se_cmd_flags & SCF_FUA)
- rw = WRITE_FUA;
- else if (!(q->flush_flags & REQ_FLUSH))
- rw = WRITE_FUA;
- else
- rw = WRITE;
+ if (cmd->se_cmd_flags & SCF_FUA) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else if (!(q->flush_flags & REQ_FLUSH)) {
+ op = REQ_OP_WRITE;
+ op_flags = WRITE_FUA;
+ } else {
+ op = REQ_OP_WRITE;
+ }
} else {
- rw = WRITE;
+ op = REQ_OP_WRITE;
}
} else {
- rw = READ;
+ op = REQ_OP_READ;
}
/*
@@ -726,7 +730,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
while (bio_add_page(bio, sg_page(sg), sg->length, sg->offset)
!= sg->length) {
if (bio_cnt >= IBLOCK_MAX_BIO_PER_TASK) {
- iblock_submit_bios(&list, rw);
+ iblock_submit_bios(&list, op, op_flags);
bio_cnt = 0;
}
@@ -750,7 +754,7 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist
*sgl, u32 sgl_nents,
goto fail_put_bios;
}
- iblock_submit_bios(&list, rw);
+ iblock_submit_bios(&list, op, op_flags);
iblock_complete_cmd(cmd);
return 0;
--
1.8.3.1
--
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