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block, drivers, fs: rename REQ_FLUSH to REQ_PREFLUSH

Sfoglia il codice sorgente 
To avoid confusion between REQ_OP_FLUSH, which is handled by
request_fn drivers, and upper layers requesting the block layer
perform a flush sequence along with possibly a WRITE, this patch
renames REQ_FLUSH to REQ_PREFLUSH.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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 14:32:25 -05:00
committato da Jens Axboe
parent a418090aa8
commit 28a8f0d317
39 ha cambiato i file con 102 aggiunte e 98 eliminazioni
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12
drivers/md/dm.c
Vedi File

@@ -1003,12 +1003,12 @@ static void dec_pending(struct dm_io *io, int error)
if (io_error == DM_ENDIO_REQUEUE)
return;
if ((bio->bi_rw & REQ_FLUSH) && bio->bi_iter.bi_size) {
if ((bio->bi_rw & REQ_PREFLUSH) && bio->bi_iter.bi_size) {
/*
* Preflush done for flush with data, reissue
* without REQ_FLUSH.
* without REQ_PREFLUSH.
*/
bio->bi_rw &= ~REQ_FLUSH;
bio->bi_rw &= ~REQ_PREFLUSH;
queue_io(md, bio);
} else {
/* done with normal IO or empty flush */
@@ -1477,7 +1477,7 @@ EXPORT_SYMBOL_GPL(dm_set_target_max_io_len);
/*
* A target may call dm_accept_partial_bio only from the map routine. It is
* allowed for all bio types except REQ_FLUSH.
* allowed for all bio types except REQ_PREFLUSH.
*
* dm_accept_partial_bio informs the dm that the target only wants to process
* additional n_sectors sectors of the bio and the rest of the data should be
@@ -1507,7 +1507,7 @@ void dm_accept_partial_bio(struct bio *bio, unsigned n_sectors)
{
struct dm_target_io *tio = container_of(bio, struct dm_target_io, clone);
unsigned bi_size = bio->bi_iter.bi_size >> SECTOR_SHIFT;
BUG_ON(bio->bi_rw & REQ_FLUSH);
BUG_ON(bio->bi_rw & REQ_PREFLUSH);
BUG_ON(bi_size > *tio->len_ptr);
BUG_ON(n_sectors > bi_size);
*tio->len_ptr -= bi_size - n_sectors;
@@ -1795,7 +1795,7 @@ static void __split_and_process_bio(struct mapped_device *md,
start_io_acct(ci.io);
if (bio->bi_rw & REQ_FLUSH) {
if (bio->bi_rw & REQ_PREFLUSH) {
ci.bio = &ci.md->flush_bio;
ci.sector_count = 0;
error = __send_empty_flush(&ci);