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| author | Kevin Wolf <kwolf@redhat.com> | 2016-04-15 10:21:04 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-04-15 17:22:12 +0200 |
| commit | 16aaf975eeed92cce602a844f795a027182a6861 (patch) | |
| tree | 46e74d325af610f4e6b928ff8ad009fedb9f1394 | |
| parent | 9c057d0b68df65b5725d9c67009e3de66e0f39f4 (diff) | |
| download | qemu-16aaf975eeed92cce602a844f795a027182a6861.tar.gz | |
block: Don't ignore flags in blk_{,co,aio}_write_zeroes()
Commit 57d6a428 neglected to pass the given flags to blk_aio_prwv(),
which broke discard by WRITE SAME for scsi-disk (the UNMAP bit would be
ignored).
Commit fc1453cd introduced the same bug for blk_write_zeroes(). This is
used for 'qemu-img convert' without has_zero_init (e.g. on a block
device) and for preallocation=falloc in parallels.
Commit 8896e088 is the version for blk_co_write_zeroes(). This function
is only used in qemu-io.
Reported-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
| -rw-r--r-- | block/block-backend.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/block/block-backend.c b/block/block-backend.c index 140c3f7d50..16c9d5e0f2 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -820,7 +820,7 @@ int blk_write_zeroes(BlockBackend *blk, int64_t sector_num, int nb_sectors, BdrvRequestFlags flags) { return blk_rw(blk, sector_num, NULL, nb_sectors, blk_write_entry, - BDRV_REQ_ZERO_WRITE); + flags | BDRV_REQ_ZERO_WRITE); } static void error_callback_bh(void *opaque) @@ -942,7 +942,8 @@ BlockAIOCB *blk_aio_write_zeroes(BlockBackend *blk, int64_t sector_num, return blk_aio_prwv(blk, sector_num << BDRV_SECTOR_BITS, nb_sectors << BDRV_SECTOR_BITS, NULL, - blk_aio_write_entry, BDRV_REQ_ZERO_WRITE, cb, opaque); + blk_aio_write_entry, flags | BDRV_REQ_ZERO_WRITE, + cb, opaque); } int blk_pread(BlockBackend *blk, int64_t offset, void *buf, int count) @@ -1452,7 +1453,7 @@ int coroutine_fn blk_co_write_zeroes(BlockBackend *blk, int64_t sector_num, return blk_co_pwritev(blk, sector_num << BDRV_SECTOR_BITS, nb_sectors << BDRV_SECTOR_BITS, NULL, - BDRV_REQ_ZERO_WRITE); + flags | BDRV_REQ_ZERO_WRITE); } int blk_write_compressed(BlockBackend *blk, int64_t sector_num, |