Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-22 12:11:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

dm: use bio op accessors

Browse Source 
Separate the op from the rq_flag_bits and have dm
set/get the bio using bio_set_op_attrs/bio_op.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Mike Christie 2016-06-05 14:32:04 -05:00 committed by Jens Axboe
parent 528ec5abe6
commit e6047149db
14 changed files with 99 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/md/dm-bufio.c
View File

@ -574,7 +574,8 @@ static void use_dmio(struct dm_buffer *b, int rw, sector_t block,
{
int r;
struct dm_io_request io_req = {
.bi_rw = rw,
.bi_op = rw,
.bi_op_flags = 0,
.notify.fn = dmio_complete,
.notify.context = b,
.client = b->c->dm_io,
@ -634,7 +635,7 @@ static void use_inline_bio(struct dm_buffer *b, int rw, sector_t block,
* the dm_buffer's inline bio is local to bufio.
*/
b->bio.bi_private = end_io;
b->bio.bi_rw = rw;
bio_set_op_attrs(&b->bio, rw, 0);
/*
* We assume that if len >= PAGE_SIZE ptr is page-aligned.
@ -1327,7 +1328,8 @@ EXPORT_SYMBOL_GPL(dm_bufio_write_dirty_buffers);
int dm_bufio_issue_flush(struct dm_bufio_client *c)
{
struct dm_io_request io_req = {
.bi_rw = WRITE_FLUSH,
.bi_op = REQ_OP_WRITE,
.bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = c->dm_io,

10
drivers/md/dm-cache-target.c
View File

@ -788,7 +788,8 @@ static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio)
spin_lock_irqsave(&cache->lock, flags);
if (cache->need_tick_bio &&
!(bio->bi_rw & (REQ_FUA | REQ_FLUSH | REQ_DISCARD))) {
!(bio->bi_rw & (REQ_FUA | REQ_FLUSH)) &&
bio_op(bio) != REQ_OP_DISCARD) {
pb->tick = true;
cache->need_tick_bio = false;
}
@ -851,7 +852,7 @@ static void inc_ds(struct cache *cache, struct bio *bio,
static bool accountable_bio(struct cache *cache, struct bio *bio)
{
return ((bio->bi_bdev == cache->origin_dev->bdev) &&
!(bio->bi_rw & REQ_DISCARD));
bio_op(bio) != REQ_OP_DISCARD);
}
static void accounted_begin(struct cache *cache, struct bio *bio)
@ -1067,7 +1068,8 @@ static void dec_io_migrations(struct cache *cache)
static bool discard_or_flush(struct bio *bio)
{
return bio->bi_rw & (REQ_FLUSH | REQ_FUA | REQ_DISCARD);
return bio_op(bio) == REQ_OP_DISCARD ||
bio->bi_rw & (REQ_FLUSH | REQ_FUA);
}
static void __cell_defer(struct cache *cache, struct dm_bio_prison_cell *cell)
@ -1980,7 +1982,7 @@ static void process_deferred_bios(struct cache *cache)
if (bio->bi_rw & REQ_FLUSH)
process_flush_bio(cache, bio);
else if (bio->bi_rw & REQ_DISCARD)
else if (bio_op(bio) == REQ_OP_DISCARD)
process_discard_bio(cache, &structs, bio);
else
process_bio(cache, &structs, bio);

8
drivers/md/dm-crypt.c
View File

@ -1136,7 +1136,7 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
clone->bi_private = io;
clone->bi_end_io = crypt_endio;
clone->bi_bdev = cc->dev->bdev;
clone->bi_rw = io->base_bio->bi_rw;
bio_set_op_attrs(clone, bio_op(io->base_bio), io->base_bio->bi_rw);
}
static int kcryptd_io_read(struct dm_crypt_io *io, gfp_t gfp)
@ -1911,11 +1911,11 @@ static int crypt_map(struct dm_target *ti, struct bio *bio)
struct crypt_config *cc = ti->private;
/*
* If bio is REQ_FLUSH or REQ_DISCARD, just bypass crypt queues.
* If bio is REQ_FLUSH or REQ_OP_DISCARD, just bypass crypt queues.
* - for REQ_FLUSH device-mapper core ensures that no IO is in-flight
* - for REQ_DISCARD caller must use flush if IO ordering matters
* - for REQ_OP_DISCARD caller must use flush if IO ordering matters
*/
if (unlikely(bio->bi_rw & (REQ_FLUSH | REQ_DISCARD))) {
if (unlikely(bio->bi_rw & REQ_FLUSH || bio_op(bio) == REQ_OP_DISCARD)) {
bio->bi_bdev = cc->dev->bdev;
if (bio_sectors(bio))
bio->bi_iter.bi_sector = cc->start +

56
drivers/md/dm-io.c
View File

@ -278,8 +278,9 @@ static void km_dp_init(struct dpages *dp, void *data)
/*-----------------------------------------------------------------
* IO routines that accept a list of pages.
*---------------------------------------------------------------*/
static void do_region(int rw, unsigned region, struct dm_io_region *where,
struct dpages *dp, struct io *io)
static void do_region(int op, int op_flags, unsigned region,
struct dm_io_region *where, struct dpages *dp,
struct io *io)
{
struct bio *bio;
struct page *page;
@ -295,24 +296,25 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
/*
* Reject unsupported discard and write same requests.
*/
if (rw & REQ_DISCARD)
if (op == REQ_OP_DISCARD)
special_cmd_max_sectors = q->limits.max_discard_sectors;
else if (rw & REQ_WRITE_SAME)
else if (op == REQ_OP_WRITE_SAME)
special_cmd_max_sectors = q->limits.max_write_same_sectors;
if ((rw & (REQ_DISCARD | REQ_WRITE_SAME)) && special_cmd_max_sectors == 0) {
if ((op == REQ_OP_DISCARD || op == REQ_OP_WRITE_SAME) &&
special_cmd_max_sectors == 0) {
dec_count(io, region, -EOPNOTSUPP);
return;
}
/*
* where->count may be zero if rw holds a flush and we need to
* where->count may be zero if op holds a flush and we need to
* send a zero-sized flush.
*/
do {
/*
* Allocate a suitably sized-bio.
*/
if ((rw & REQ_DISCARD) || (rw & REQ_WRITE_SAME))
if ((op == REQ_OP_DISCARD) || (op == REQ_OP_WRITE_SAME))
num_bvecs = 1;
else
num_bvecs = min_t(int, BIO_MAX_PAGES,
@ -322,14 +324,14 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
bio->bi_iter.bi_sector = where->sector + (where->count - remaining);
bio->bi_bdev = where->bdev;
bio->bi_end_io = endio;
bio->bi_rw = rw;
bio_set_op_attrs(bio, op, op_flags);
store_io_and_region_in_bio(bio, io, region);
if (rw & REQ_DISCARD) {
if (op == REQ_OP_DISCARD) {
num_sectors = min_t(sector_t, special_cmd_max_sectors, remaining);
bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;
remaining -= num_sectors;
} else if (rw & REQ_WRITE_SAME) {
} else if (op == REQ_OP_WRITE_SAME) {
/*
* WRITE SAME only uses a single page.
*/
@ -360,7 +362,7 @@ static void do_region(int rw, unsigned region, struct dm_io_region *where,
} while (remaining);
}
static void dispatch_io(int rw, unsigned int num_regions,
static void dispatch_io(int op, int op_flags, unsigned int num_regions,
struct dm_io_region *where, struct dpages *dp,
struct io *io, int sync)
{
@ -370,7 +372,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
BUG_ON(num_regions > DM_IO_MAX_REGIONS);
if (sync)
rw |= REQ_SYNC;
op_flags |= REQ_SYNC;
/*
* For multiple regions we need to be careful to rewind
@ -378,8 +380,8 @@ static void dispatch_io(int rw, unsigned int num_regions,
*/
for (i = 0; i < num_regions; i++) {
*dp = old_pages;
if (where[i].count || (rw & REQ_FLUSH))
do_region(rw, i, where + i, dp, io);
if (where[i].count || (op_flags & REQ_FLUSH))
do_region(op, op_flags, i, where + i, dp, io);
}
/*
@ -403,13 +405,13 @@ static void sync_io_complete(unsigned long error, void *context)
}
static int sync_io(struct dm_io_client *client, unsigned int num_regions,
struct dm_io_region *where, int rw, struct dpages *dp,
unsigned long *error_bits)
struct dm_io_region *where, int op, int op_flags,
struct dpages *dp, unsigned long *error_bits)
{
struct io *io;
struct sync_io sio;
if (num_regions > 1 && !op_is_write(rw)) {
if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
return -EIO;
}
@ -426,7 +428,7 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
dispatch_io(rw, num_regions, where, dp, io, 1);
dispatch_io(op, op_flags, num_regions, where, dp, io, 1);
wait_for_completion_io(&sio.wait);
@ -437,12 +439,12 @@ static int sync_io(struct dm_io_client *client, unsigned int num_regions,
}
static int async_io(struct dm_io_client *client, unsigned int num_regions,
struct dm_io_region *where, int rw, struct dpages *dp,
io_notify_fn fn, void *context)
struct dm_io_region *where, int op, int op_flags,
struct dpages *dp, io_notify_fn fn, void *context)
{
struct io *io;
if (num_regions > 1 && !op_is_write(rw)) {
if (num_regions > 1 && !op_is_write(op)) {
WARN_ON(1);
fn(1, context);
return -EIO;
@ -458,7 +460,7 @@ static int async_io(struct dm_io_client *client, unsigned int num_regions,
io->vma_invalidate_address = dp->vma_invalidate_address;
io->vma_invalidate_size = dp->vma_invalidate_size;
dispatch_io(rw, num_regions, where, dp, io, 0);
dispatch_io(op, op_flags, num_regions, where, dp, io, 0);
return 0;
}
@ -481,7 +483,7 @@ static int dp_init(struct dm_io_request *io_req, struct dpages *dp,
case DM_IO_VMA:
flush_kernel_vmap_range(io_req->mem.ptr.vma, size);
if ((io_req->bi_rw & RW_MASK) == READ) {
if (io_req->bi_op == REQ_OP_READ) {
dp->vma_invalidate_address = io_req->mem.ptr.vma;
dp->vma_invalidate_size = size;
}
@ -519,10 +521,12 @@ int dm_io(struct dm_io_request *io_req, unsigned num_regions,
if (!io_req->notify.fn)
return sync_io(io_req->client, num_regions, where,
io_req->bi_rw, &dp, sync_error_bits);
io_req->bi_op, io_req->bi_op_flags, &dp,
sync_error_bits);
return async_io(io_req->client, num_regions, where, io_req->bi_rw,
&dp, io_req->notify.fn, io_req->notify.context);
return async_io(io_req->client, num_regions, where, io_req->bi_op,
io_req->bi_op_flags, &dp, io_req->notify.fn,
io_req->notify.context);
}
EXPORT_SYMBOL(dm_io);

5
drivers/md/dm-kcopyd.c
View File

@ -496,7 +496,8 @@ static int run_io_job(struct kcopyd_job *job)
{
int r;
struct dm_io_request io_req = {
.bi_rw = job->rw,
.bi_op = job->rw,
.bi_op_flags = 0,
.mem.type = DM_IO_PAGE_LIST,
.mem.ptr.pl = job->pages,
.mem.offset = 0,
@ -734,7 +735,7 @@ int dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from,
/*
* Use WRITE SAME to optimize zeroing if all dests support it.
*/
job->rw = WRITE | REQ_WRITE_SAME;
job->rw = REQ_OP_WRITE_SAME;
for (i = 0; i < job->num_dests; i++)
if (!bdev_write_same(job->dests[i].bdev)) {
job->rw = WRITE;

8
drivers/md/dm-log-writes.c
View File

@ -205,7 +205,7 @@ static int write_metadata(struct log_writes_c *lc, void *entry,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
bio->bi_rw = WRITE;
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
page = alloc_page(GFP_KERNEL);
if (!page) {
@ -270,7 +270,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
bio->bi_rw = WRITE;
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
for (i = 0; i < block->vec_cnt; i++) {
/*
@ -292,7 +292,7 @@ static int log_one_block(struct log_writes_c *lc,
bio->bi_bdev = lc->logdev->bdev;
bio->bi_end_io = log_end_io;
bio->bi_private = lc;
bio->bi_rw = WRITE;
bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
ret = bio_add_page(bio, block->vecs[i].bv_page,
block->vecs[i].bv_len, 0);
@ -557,7 +557,7 @@ static int log_writes_map(struct dm_target *ti, struct bio *bio)
int i = 0;
bool flush_bio = (bio->bi_rw & REQ_FLUSH);
bool fua_bio = (bio->bi_rw & REQ_FUA);
bool discard_bio = (bio->bi_rw & REQ_DISCARD);
bool discard_bio = (bio_op(bio) == REQ_OP_DISCARD);
pb->block = NULL;

5
drivers/md/dm-log.c
View File

@ -293,7 +293,7 @@ static void header_from_disk(struct log_header_core *core, struct log_header_dis
static int rw_header(struct log_c *lc, int rw)
{
lc->io_req.bi_rw = rw;
lc->io_req.bi_op = rw;
return dm_io(&lc->io_req, 1, &lc->header_location, NULL);
}
@ -306,7 +306,8 @@ static int flush_header(struct log_c *lc)
.count = 0,
};
lc->io_req.bi_rw = WRITE_FLUSH;
lc->io_req.bi_op = REQ_OP_WRITE;
lc->io_req.bi_op_flags = WRITE_FLUSH;
return dm_io(&lc->io_req, 1, &null_location, NULL);
}

19
drivers/md/dm-raid1.c
View File

@ -260,7 +260,8 @@ static int mirror_flush(struct dm_target *ti)
struct dm_io_region io[ms->nr_mirrors];
struct mirror *m;
struct dm_io_request io_req = {
.bi_rw = WRITE_FLUSH,
.bi_op = REQ_OP_WRITE,
.bi_op_flags = WRITE_FLUSH,
.mem.type = DM_IO_KMEM,
.mem.ptr.addr = NULL,
.client = ms->io_client,
@ -541,7 +542,8 @@ static void read_async_bio(struct mirror *m, struct bio *bio)
{
struct dm_io_region io;
struct dm_io_request io_req = {
.bi_rw = READ,
.bi_op = REQ_OP_READ,
.bi_op_flags = 0,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = read_callback,
@ -624,7 +626,7 @@ static void write_callback(unsigned long error, void *context)
* If the bio is discard, return an error, but do not
* degrade the array.
*/
if (bio->bi_rw & REQ_DISCARD) {
if (bio_op(bio) == REQ_OP_DISCARD) {
bio->bi_error = -EOPNOTSUPP;
bio_endio(bio);
return;
@ -654,7 +656,8 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
struct dm_io_region io[ms->nr_mirrors], *dest = io;
struct mirror *m;
struct dm_io_request io_req = {
.bi_rw = WRITE | (bio->bi_rw & WRITE_FLUSH_FUA),
.bi_op = REQ_OP_WRITE,
.bi_op_flags = bio->bi_rw & WRITE_FLUSH_FUA,
.mem.type = DM_IO_BIO,
.mem.ptr.bio = bio,
.notify.fn = write_callback,
@ -662,8 +665,8 @@ static void do_write(struct mirror_set *ms, struct bio *bio)
.client = ms->io_client,
};
if (bio->bi_rw & REQ_DISCARD) {
io_req.bi_rw |= REQ_DISCARD;
if (bio_op(bio) == REQ_OP_DISCARD) {
io_req.bi_op = REQ_OP_DISCARD;
io_req.mem.type = DM_IO_KMEM;
io_req.mem.ptr.addr = NULL;
}
@ -702,7 +705,7 @@ static void do_writes(struct mirror_set *ms, struct bio_list *writes)
while ((bio = bio_list_pop(writes))) {
if ((bio->bi_rw & REQ_FLUSH) ||
(bio->bi_rw & REQ_DISCARD)) {
(bio_op(bio) == REQ_OP_DISCARD)) {
bio_list_add(&sync, bio);
continue;
}
@ -1250,7 +1253,7 @@ static int mirror_end_io(struct dm_target *ti, struct bio *bio, int error)
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
if (!(bio->bi_rw & (REQ_FLUSH | REQ_DISCARD)))
if (!(bio->bi_rw & REQ_FLUSH) && bio_op(bio) != REQ_OP_DISCARD)
dm_rh_dec(ms->rh, bio_record->write_region);
return error;
}

4
drivers/md/dm-region-hash.c
View File

@ -403,7 +403,7 @@ void dm_rh_mark_nosync(struct dm_region_hash *rh, struct bio *bio)
return;
}
if (bio->bi_rw & REQ_DISCARD)
if (bio_op(bio) == REQ_OP_DISCARD)
return;
/* We must inform the log that the sync count has changed. */
@ -526,7 +526,7 @@ void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios)
struct bio *bio;
for (bio = bios->head; bio; bio = bio->bi_next) {
if (bio->bi_rw & (REQ_FLUSH | REQ_DISCARD))
if (bio->bi_rw & REQ_FLUSH || bio_op(bio) == REQ_OP_DISCARD)
continue;
rh_inc(rh, dm_rh_bio_to_region(rh, bio));
}

24
drivers/md/dm-snap-persistent.c
View File

@ -226,8 +226,8 @@ static void do_metadata(struct work_struct *work)
/*
* Read or write a chunk aligned and sized block of data from a device.
*/
static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
int metadata)
static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int op,
int op_flags, int metadata)
{
struct dm_io_region where = {
.bdev = dm_snap_cow(ps->store->snap)->bdev,
@ -235,7 +235,8 @@ static int chunk_io(struct pstore *ps, void *area, chunk_t chunk, int rw,
.count = ps->store->chunk_size,
};
struct dm_io_request io_req = {
.bi_rw = rw,
.bi_op = op,
.bi_op_flags = op_flags,
.mem.type = DM_IO_VMA,
.mem.ptr.vma = area,
.client = ps->io_client,
@ -281,14 +282,14 @@ static void skip_metadata(struct pstore *ps)
* Read or write a metadata area. Remembering to skip the first
* chunk which holds the header.
*/
static int area_io(struct pstore *ps, int rw)
static int area_io(struct pstore *ps, int op, int op_flags)
{
int r;
chunk_t chunk;
chunk = area_location(ps, ps->current_area);
r = chunk_io(ps, ps->area, chunk, rw, 0);
r = chunk_io(ps, ps->area, chunk, op, op_flags, 0);
if (r)
return r;
@ -302,7 +303,8 @@ static void zero_memory_area(struct pstore *ps)
static int zero_disk_area(struct pstore *ps, chunk_t area)
{
return chunk_io(ps, ps->zero_area, area_location(ps, area), WRITE, 0);
return chunk_io(ps, ps->zero_area, area_location(ps, area),
REQ_OP_WRITE, 0, 0);
}
static int read_header(struct pstore *ps, int *new_snapshot)
@ -334,7 +336,7 @@ static int read_header(struct pstore *ps, int *new_snapshot)
if (r)
return r;
r = chunk_io(ps, ps->header_area, 0, READ, 1);
r = chunk_io(ps, ps->header_area, 0, REQ_OP_READ, 0, 1);
if (r)
goto bad;
@ -395,7 +397,7 @@ static int write_header(struct pstore *ps)
dh->version = cpu_to_le32(ps->version);
dh->chunk_size = cpu_to_le32(ps->store->chunk_size);
return chunk_io(ps, ps->header_area, 0, WRITE, 1);
return chunk_io(ps, ps->header_area, 0, REQ_OP_WRITE, 0, 1);
}
/*
@ -739,7 +741,7 @@ static void persistent_commit_exception(struct dm_exception_store *store,
/*
* Commit exceptions to disk.
*/
if (ps->valid && area_io(ps, WRITE_FLUSH_FUA))
if (ps->valid && area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA))
ps->valid = 0;
/*
@ -779,7 +781,7 @@ static int persistent_prepare_merge(struct dm_exception_store *store,
return 0;
ps->current_area--;
r = area_io(ps, READ);
r = area_io(ps, REQ_OP_READ, 0);
if (r < 0)
return r;
ps->current_committed = ps->exceptions_per_area;
@ -816,7 +818,7 @@ static int persistent_commit_merge(struct dm_exception_store *store,
for (i = 0; i < nr_merged; i++)
clear_exception(ps, ps->current_committed - 1 - i);
r = area_io(ps, WRITE_FLUSH_FUA);
r = area_io(ps, REQ_OP_WRITE, WRITE_FLUSH_FUA);
if (r < 0)
return r;

4
drivers/md/dm-stripe.c
View File

@ -292,8 +292,8 @@ static int stripe_map(struct dm_target *ti, struct bio *bio)
bio->bi_bdev = sc->stripe[target_bio_nr].dev->bdev;
return DM_MAPIO_REMAPPED;
}
if (unlikely(bio->bi_rw & REQ_DISCARD) ||
unlikely(bio->bi_rw & REQ_WRITE_SAME)) {
if (unlikely(bio_op(bio) == REQ_OP_DISCARD) ||
unlikely(bio_op(bio) == REQ_OP_WRITE_SAME)) {
target_bio_nr = dm_bio_get_target_bio_nr(bio);
BUG_ON(target_bio_nr >= sc->stripes);
return stripe_map_range(sc, bio, target_bio_nr);

17
drivers/md/dm-thin.c
View File

@ -371,7 +371,7 @@ static void end_discard(struct discard_op *op, int r)
* need to wait for the chain to complete.
*/
bio_chain(op->bio, op->parent_bio);
op->bio->bi_rw = REQ_WRITE | REQ_DISCARD;
bio_set_op_attrs(op->bio, REQ_OP_DISCARD, 0);
submit_bio(op->bio);
}
@ -705,7 +705,7 @@ static void inc_all_io_entry(struct pool *pool, struct bio *bio)
{
struct dm_thin_endio_hook *h;
if (bio->bi_rw & REQ_DISCARD)
if (bio_op(bio) == REQ_OP_DISCARD)
return;
h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));
@ -868,7 +868,8 @@ static void __inc_remap_and_issue_cell(void *context,
struct bio *bio;
while ((bio = bio_list_pop(&cell->bios))) {
if (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA))
if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
bio_op(bio) == REQ_OP_DISCARD)
bio_list_add(&info->defer_bios, bio);
else {
inc_all_io_entry(info->tc->pool, bio);
@ -1640,7 +1641,8 @@ static void __remap_and_issue_shared_cell(void *context,
while ((bio = bio_list_pop(&cell->bios))) {
if ((bio_data_dir(bio) == WRITE) ||
(bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA)))
(bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
bio_op(bio) == REQ_OP_DISCARD))
bio_list_add(&info->defer_bios, bio);
else {
struct dm_thin_endio_hook *h = dm_per_bio_data(bio, sizeof(struct dm_thin_endio_hook));;
@ -2029,7 +2031,7 @@ static void process_thin_deferred_bios(struct thin_c *tc)
break;
}
if (bio->bi_rw & REQ_DISCARD)
if (bio_op(bio) == REQ_OP_DISCARD)
pool->process_discard(tc, bio);
else
pool->process_bio(tc, bio);
@ -2116,7 +2118,7 @@ static void process_thin_deferred_cells(struct thin_c *tc)
return;
}
if (cell->holder->bi_rw & REQ_DISCARD)
if (bio_op(cell->holder) == REQ_OP_DISCARD)
pool->process_discard_cell(tc, cell);
else
pool->process_cell(tc, cell);
@ -2554,7 +2556,8 @@ static int thin_bio_map(struct dm_target *ti, struct bio *bio)
return DM_MAPIO_SUBMITTED;
}
if (bio->bi_rw & (REQ_DISCARD | REQ_FLUSH | REQ_FUA)) {
if (bio->bi_rw & (REQ_FLUSH | REQ_FUA) ||
bio_op(bio) == REQ_OP_DISCARD) {
thin_defer_bio_with_throttle(tc, bio);
return DM_MAPIO_SUBMITTED;
}

8
drivers/md/dm.c
View File

@ -1053,7 +1053,7 @@ static void clone_endio(struct bio *bio)
}
}
if (unlikely(r == -EREMOTEIO && (bio->bi_rw & REQ_WRITE_SAME) &&
if (unlikely(r == -EREMOTEIO && (bio_op(bio) == REQ_OP_WRITE_SAME) &&
!bdev_get_queue(bio->bi_bdev)->limits.max_write_same_sectors))
disable_write_same(md);
@ -1748,9 +1748,9 @@ static int __split_and_process_non_flush(struct clone_info *ci)
unsigned len;
int r;
if (unlikely(bio->bi_rw & REQ_DISCARD))
if (unlikely(bio_op(bio) == REQ_OP_DISCARD))
return __send_discard(ci);
else if (unlikely(bio->bi_rw & REQ_WRITE_SAME))
else if (unlikely(bio_op(bio) == REQ_OP_WRITE_SAME))
return __send_write_same(ci);
ti = dm_table_find_target(ci->map, ci->sector);
@ -2415,7 +2415,7 @@ static struct mapped_device *alloc_dev(int minor)
bio_init(&md->flush_bio);
md->flush_bio.bi_bdev = md->bdev;
md->flush_bio.bi_rw = WRITE_FLUSH;
bio_set_op_attrs(&md->flush_bio, REQ_OP_WRITE, WRITE_FLUSH);
dm_stats_init(&md->stats);

3
include/linux/dm-io.h
View File

@ -57,7 +57,8 @@ struct dm_io_notify {
*/
struct dm_io_client;
struct dm_io_request {
int bi_rw; /* READ|WRITE - not READA */
int bi_op; /* REQ_OP */
int bi_op_flags; /* rq_flag_bits */
struct dm_io_memory mem; /* Memory to use for io */
struct dm_io_notify notify; /* Synchronous if notify.fn is NULL */
struct dm_io_client *client; /* Client memory handler */