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dm/core: Rename kcopyd_job.rw into kcopyd.op 

The member name 'rw' suggests that this member either has the value 'READ'
or 'WRITE' and no other values. Since that member also can have the value
REQ_OP_WRITE_ZEROES, rename 'rw' into 'op'. This patch does not change any
functionality since REQ_OP_READ = READ = 0 and REQ_OP_WRITE = WRITE = 1.

Cc: Alasdair Kergon <agk@redhat.com>
Cc: Mike Snitzer <snitzer@kernel.org>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20220714180729.1065367-23-bvanassche@acm.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bart Van Assche 2022-07-14 11:06:48 -07:00 коммит произвёл Jens Axboe
Родитель 581075e4f6
Коммит 71f7113d20
1 изменённых файлов: 13 добавлений и 12 удалений
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25
drivers/md/dm-kcopyd.c
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@ -350,9 +350,9 @@ struct kcopyd_job {
unsigned long write_err;
/*
* Either READ or WRITE
* REQ_OP_READ, REQ_OP_WRITE or REQ_OP_WRITE_ZEROES.
*/
int rw;
enum req_op op;
struct dm_io_region source;
/*
@ -418,7 +418,8 @@ static struct kcopyd_job *pop_io_job(struct list_head *jobs,
* constraint and sequential writes that are at the right position.
*/
list_for_each_entry(job, jobs, list) {
if (job->rw == READ || !(job->flags & BIT(DM_KCOPYD_WRITE_SEQ))) {
if (job->op == REQ_OP_READ ||
!(job->flags & BIT(DM_KCOPYD_WRITE_SEQ))) {
list_del(&job->list);
return job;
}
@ -518,7 +519,7 @@ static void complete_io(unsigned long error, void *context)
io_job_finish(kc->throttle);
if (error) {
if (op_is_write(job->rw))
if (op_is_write(job->op))
job->write_err |= error;
else
job->read_err = 1;
@ -530,11 +531,11 @@ static void complete_io(unsigned long error, void *context)
}
}
if (op_is_write(job->rw))
if (op_is_write(job->op))
push(&kc->complete_jobs, job);
else {
job->rw = WRITE;
job->op = REQ_OP_WRITE;
push(&kc->io_jobs, job);
}
@ -549,7 +550,7 @@ static int run_io_job(struct kcopyd_job *job)
{
int r;
struct dm_io_request io_req = {
.bi_opf = job->rw,
.bi_opf = job->op,
.mem.type = DM_IO_PAGE_LIST,
.mem.ptr.pl = job->pages,
.mem.offset = 0,
@ -570,7 +571,7 @@ static int run_io_job(struct kcopyd_job *job)
io_job_start(job->kc->throttle);
if (job->rw == READ)
if (job->op == REQ_OP_READ)
r = dm_io(&io_req, 1, &job->source, NULL);
else
r = dm_io(&io_req, job->num_dests, job->dests, NULL);
@ -613,7 +614,7 @@ static int process_jobs(struct list_head *jobs, struct dm_kcopyd_client *kc,
if (r < 0) {
/* error this rogue job */
if (op_is_write(job->rw))
if (op_is_write(job->op))
job->write_err = (unsigned long) -1L;
else
job->read_err = 1;
@ -816,7 +817,7 @@ void dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from,
if (from) {
job->source = *from;
job->pages = NULL;
job->rw = READ;
job->op = REQ_OP_READ;
} else {
memset(&job->source, 0, sizeof job->source);
job->source.count = job->dests[0].count;
@ -825,10 +826,10 @@ void dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from,
/*
* Use WRITE ZEROES to optimize zeroing if all dests support it.
*/
job->rw = REQ_OP_WRITE_ZEROES;
job->op = REQ_OP_WRITE_ZEROES;
for (i = 0; i < job->num_dests; i++)
if (!bdev_write_zeroes_sectors(job->dests[i].bdev)) {
job->rw = WRITE;
job->op = REQ_OP_WRITE;
break;
}
}