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block: Convert .bdrv_aio_discard() to byte-based

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Another step towards byte-based interfaces everywhere.  Replace
the sector-based driver callback .bdrv_aio_discard() with a new
byte-based .bdrv_aio_pdiscard().  Only raw-posix and RBD drivers
are affected, so it was not worth splitting into multiple patches.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-9-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Eric Blake 2016-07-15 17:22:57 -06:00 • committed by Stefan Hajnoczi
parent 7bbca9e290
commit 4da444a0bb
4 changed files with 20 additions and 24 deletions
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7
block/io.c
View file

@ -2423,7 +2423,7 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs, int64_t offset,
return 0;
}
if (!bs->drv->bdrv_co_discard && !bs->drv->bdrv_aio_discard) {
if (!bs->drv->bdrv_co_discard && !bs->drv->bdrv_aio_pdiscard) {
return 0;
}
@ -2464,9 +2464,8 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs, int64_t offset,
.coroutine = qemu_coroutine_self(),
};
acb = bs->drv->bdrv_aio_discard(bs, offset >> BDRV_SECTOR_BITS,
num >> BDRV_SECTOR_BITS,
bdrv_co_io_em_complete, &co);
acb = bs->drv->bdrv_aio_pdiscard(bs, offset, num,
bdrv_co_io_em_complete, &co);
if (acb == NULL) {
ret = -EIO;
goto out;