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[Qemu-block] [PATCH v2 09/19] block: Add .bdrv_co_pdiscard() driver call
From: |
Eric Blake |
Subject: |
[Qemu-block] [PATCH v2 09/19] block: Add .bdrv_co_pdiscard() driver callback |
Date: |
Fri, 15 Jul 2016 17:22:58 -0600 |
There's enough drivers with a sector-based callback that it will
be easier to switch one at a time. This patch adds a byte-based
callback, and then after all drivers are swapped, we'll drop the
sector-based callback.
[checkpatch doesn't like the space after coroutine_fn in
block_int.h, but it's consistent with the rest of the file]
Signed-off-by: Eric Blake <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
---
include/block/block_int.h | 2 ++
block/io.c | 7 +++++--
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 0cbe250..b4d4cd2 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -167,6 +167,8 @@ struct BlockDriver {
int64_t offset, int count, BdrvRequestFlags flags);
int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs,
int64_t sector_num, int nb_sectors);
+ int coroutine_fn (*bdrv_co_pdiscard)(BlockDriverState *bs,
+ int64_t offset, int count);
int64_t coroutine_fn (*bdrv_co_get_block_status)(BlockDriverState *bs,
int64_t sector_num, int nb_sectors, int *pnum,
BlockDriverState **file);
diff --git a/block/io.c b/block/io.c
index 40d8444..ee87fbf 100644
--- a/block/io.c
+++ b/block/io.c
@@ -2403,7 +2403,8 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs,
int64_t offset,
return 0;
}
- if (!bs->drv->bdrv_co_discard && !bs->drv->bdrv_aio_pdiscard) {
+ if (!bs->drv->bdrv_co_discard && !bs->drv->bdrv_co_pdiscard &&
+ !bs->drv->bdrv_aio_pdiscard) {
return 0;
}
@@ -2435,7 +2436,9 @@ int coroutine_fn bdrv_co_pdiscard(BlockDriverState *bs,
int64_t offset,
int ret;
int num = MIN(count, max_pdiscard);
- if (bs->drv->bdrv_co_discard) {
+ if (bs->drv->bdrv_co_pdiscard) {
+ ret = bs->drv->bdrv_co_pdiscard(bs, offset, num);
+ } else if (bs->drv->bdrv_co_discard) {
ret = bs->drv->bdrv_co_discard(bs, offset >> BDRV_SECTOR_BITS,
num >> BDRV_SECTOR_BITS);
} else {
--
2.5.5
- [Qemu-block] [PATCH for-2.7 v2 00/19] byte-based block discard, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 05/19] block: Convert BB interface to byte-based discards, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 04/19] block: Convert bdrv_aio_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 01/19] block: Convert bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 08/19] block: Convert .bdrv_aio_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 07/19] rbd: Switch rbd_start_aio() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 02/19] block: Convert bdrv_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 03/19] block: Switch BlockRequest to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 11/19] gluster: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 09/19] block: Add .bdrv_co_pdiscard() driver callback,
Eric Blake <=
- [Qemu-block] [PATCH v2 06/19] raw-posix: Switch paio_submit() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 10/19] blkreplay: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 14/19] qcow2: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 12/19] iscsi: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 15/19] raw_bsd: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 13/19] nbd: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 16/19] sheepdog: Switch .bdrv_co_discard() to byte-based, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 17/19] block: Kill .bdrv_co_discard(), Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 19/19] raw_bsd: Convert to byte-based interface, Eric Blake, 2016/07/15
- [Qemu-block] [PATCH v2 18/19] nbd: Convert to byte-based interface, Eric Blake, 2016/07/15