diff options
| author | Eric Blake <eblake@redhat.com> | 2016-07-15 17:22:50 -0600 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2016-07-20 14:11:54 +0100 |
| commit | 9f1963b3f72521f75a549f8afd61b19e7da63c6f (patch) | |
| tree | 9679b0c2ebd1648b295048a58587bbfdad0039cb /block/block-backend.c | |
| parent | 6bd01f14dbef06dc22c0400f12dfbef06ab6b766 (diff) | |
block: Convert bdrv_co_discard() to byte-based
Another step towards byte-based interfaces everywhere. Replace
the sector-based bdrv_co_discard() with a new byte-based
bdrv_co_pdiscard(), which silently ignores any unaligned head
or tail. Driver callbacks will be converted in followup patches.
By calculating the alignment outside of the loop, and clamping
the max discard to an aligned value, we can simplify the actions
done within the loop.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-2-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block/block-backend.c')
| -rw-r--r-- | block/block-backend.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index f9cea1b304..d982cf9d29 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1113,7 +1113,8 @@ int blk_co_discard(BlockBackend *blk, int64_t sector_num, int nb_sectors) return ret; } - return bdrv_co_discard(blk_bs(blk), sector_num, nb_sectors); + return bdrv_co_pdiscard(blk_bs(blk), sector_num << BDRV_SECTOR_BITS, + nb_sectors << BDRV_SECTOR_BITS); } int blk_co_flush(BlockBackend *blk) |