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block: kill off q->flush_flags

Browse source 
Now that we converted everything to the newer block write cache
interface, kill off the queue flush_flags and queueable flush
entries.

Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2016-04-13 13:33:19 -06:00
commit c888a8f95a
8 changed files with 32 additions and 28 deletions
Download patch file Download diff file Expand all files Collapse all files

12
drivers/md/dm-table.c
View file

@ -1348,13 +1348,13 @@ static void dm_table_verify_integrity(struct dm_table *t)
static int device_flush_capable(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
unsigned flush = (*(unsigned *)data);
unsigned long flush = (unsigned long) data;
struct request_queue *q = bdev_get_queue(dev->bdev);
return q && (q->flush_flags & flush);
return q && (q->queue_flags & flush);
}
static bool dm_table_supports_flush(struct dm_table *t, unsigned flush)
static bool dm_table_supports_flush(struct dm_table *t, unsigned long flush)
{
struct dm_target *ti;
unsigned i = 0;
@ -1375,7 +1375,7 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned flush)
return true;
if (ti->type->iterate_devices &&
ti->type->iterate_devices(ti, device_flush_capable, &flush))
ti->type->iterate_devices(ti, device_flush_capable, (void *) flush))
return true;
}
@ -1518,9 +1518,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
else
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q);
if (dm_table_supports_flush(t, REQ_FLUSH)) {
if (dm_table_supports_flush(t, (1UL << QUEUE_FLAG_WC))) {
wc = true;
if (dm_table_supports_flush(t, REQ_FUA))
if (dm_table_supports_flush(t, (1UL << QUEUE_FLAG_FUA)))
fua = true;
}
blk_queue_write_cache(q, wc, fua);

3
drivers/md/raid5-cache.c
View file

@ -1188,6 +1188,7 @@ ioerr:
int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
{
struct request_queue *q = bdev_get_queue(rdev->bdev);
struct r5l_log *log;
if (PAGE_SIZE != 4096)
@ -1197,7 +1198,7 @@ int r5l_init_log(struct r5conf *conf, struct md_rdev *rdev)
return -ENOMEM;
log->rdev = rdev;
log->need_cache_flush = (rdev->bdev->bd_disk->queue->flush_flags != 0);
log->need_cache_flush = test_bit(QUEUE_FLAG_WC, &q->queue_flags) != 0;
log->uuid_checksum = crc32c_le(~0, rdev->mddev->uuid,
sizeof(rdev->mddev->uuid));