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Handle all io on bio handler

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Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2021-05-17 17:02:38 +02:00
parent fbc3906576
commit 7343cb55fa
14 changed files with 374 additions and 180 deletions
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33
modules/cas_disk/exp_obj.c
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@@ -67,17 +67,9 @@ void casdsk_deinit_exp_objs(void)
}
static inline void _casdsk_exp_obj_handle_bio_att(struct casdsk_disk *dsk,
struct request_queue *q,
struct bio *bio)
{
int status = CASDSK_BIO_NOT_HANDLED;
if (likely(dsk->exp_obj->ops->make_request_fn))
status = dsk->exp_obj->ops->
make_request_fn(dsk, q, bio, dsk->private);
if (status == CASDSK_BIO_NOT_HANDLED)
cas_call_default_mk_request_fn(dsk->exp_obj->mk_rq_fn, q, bio);
dsk->exp_obj->ops->submit_bio(dsk, bio, dsk->private);
}
CAS_DECLARE_BLOCK_CALLBACK(_casdsk_exp_obj_bio_pt_io, struct bio *bio,
@@ -102,7 +94,6 @@ CAS_DECLARE_BLOCK_CALLBACK(_casdsk_exp_obj_bio_pt_io, struct bio *bio,
}
static inline void _casdsk_exp_obj_handle_bio_pt(struct casdsk_disk *dsk,
struct request_queue *q,
struct bio *bio)
{
struct bio *cloned_bio;
@@ -133,13 +124,12 @@ static inline void _casdsk_exp_obj_handle_bio_pt(struct casdsk_disk *dsk,
}
static inline void _casdsk_exp_obj_handle_bio(struct casdsk_disk *dsk,
struct request_queue *q,
struct bio *bio)
{
if (likely(casdsk_disk_is_attached(dsk)))
_casdsk_exp_obj_handle_bio_att(dsk, q, bio);
_casdsk_exp_obj_handle_bio_att(dsk, bio);
else if (casdsk_disk_is_pt(dsk))
_casdsk_exp_obj_handle_bio_pt(dsk, q, bio);
_casdsk_exp_obj_handle_bio_pt(dsk, bio);
else if (casdsk_disk_is_shutdown(dsk))
CAS_BIO_ENDIO(bio, CAS_BIO_BISIZE(bio), CAS_ERRNO_TO_BLK_STS(-EIO));
else
@@ -176,26 +166,29 @@ retry:
return cpu;
}
static MAKE_RQ_RET_TYPE _casdsk_exp_obj_make_rq_fn(struct request_queue *q,
struct bio *bio)
static MAKE_RQ_RET_TYPE _casdsk_exp_obj_submit_bio(struct bio *bio)
{
struct casdsk_disk *dsk;
unsigned int cpu;
BUG_ON(!bio);
BUG_ON(!q);
BUG_ON(!q->queuedata);
dsk = q->queuedata;
dsk = CAS_BIO_GET_GENDISK(bio)->private_data;
cpu = _casdsk_exp_obj_begin_rq(dsk);
_casdsk_exp_obj_handle_bio(dsk, q, bio);
_casdsk_exp_obj_handle_bio(dsk, bio);
_casdsk_exp_obj_end_rq(dsk, cpu);
KRETURN(0);
}
static MAKE_RQ_RET_TYPE _casdsk_exp_obj_make_rq_fn(struct request_queue *q,
struct bio *bio)
{
return _casdsk_exp_obj_submit_bio(bio);
}
static int _casdsk_get_next_part_no(struct block_device *bd)
{
int part_no = 0;
@@ -369,6 +362,7 @@ static void _casdsk_exp_obj_clear_dev_t(struct casdsk_disk *dsk)
static const struct block_device_operations _casdsk_exp_obj_ops = {
.owner = THIS_MODULE,
CAS_SET_SUBMIT_BIO(_casdsk_exp_obj_submit_bio)
};
static int casdsk_exp_obj_alloc(struct casdsk_disk *dsk)
@@ -611,7 +605,6 @@ int casdsk_exp_obj_create(struct casdsk_disk *dsk, const char *dev_name,
gd->private_data = dsk;
strlcpy(gd->disk_name, exp_obj->dev_name, sizeof(gd->disk_name));
dsk->exp_obj->mk_rq_fn = cas_get_default_mk_request_fn(queue);
cas_blk_queue_make_request(queue, _casdsk_exp_obj_make_rq_fn);
if (exp_obj->ops->set_geometry) {