diff options
| author | Stefan Hajnoczi <stefanha@redhat.com> | 2013-01-11 16:41:27 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2013-01-14 10:06:56 +0100 |
| commit | c53b1c5114bdf7fc945cbf11436da61789ca2267 (patch) | |
| tree | 6d55f04d9eef3813ea35f326d0253d34266b0704 /block | |
| parent | b608c8dc02c78ee95455a0989bdf1b41c768b2ef (diff) | |
block: make qiov_is_aligned() public
The qiov_is_aligned() function checks whether a QEMUIOVector meets a
BlockDriverState's alignment requirements. This is needed by
virtio-blk-data-plane so:
1. Move the function from block/raw-posix.c to block/block.c.
2. Make it public in block/block.h.
3. Rename to bdrv_qiov_is_aligned().
4. Change return type from int to bool.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/raw-posix.c | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/block/raw-posix.c b/block/raw-posix.c index 0e705ba07d..c3d7fda7b7 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -430,22 +430,6 @@ static void raw_reopen_abort(BDRVReopenState *state) #endif */ -/* - * Check if all memory in this vector is sector aligned. - */ -static int qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov) -{ - int i; - - for (i = 0; i < qiov->niov; i++) { - if ((uintptr_t) qiov->iov[i].iov_base % bs->buffer_alignment) { - return 0; - } - } - - return 1; -} - static ssize_t handle_aiocb_ioctl(RawPosixAIOData *aiocb) { int ret; @@ -714,7 +698,7 @@ static BlockDriverAIOCB *raw_aio_submit(BlockDriverState *bs, * driver that it needs to copy the buffer. */ if ((bs->open_flags & BDRV_O_NOCACHE)) { - if (!qiov_is_aligned(bs, qiov)) { + if (!bdrv_qiov_is_aligned(bs, qiov)) { type |= QEMU_AIO_MISALIGNED; #ifdef CONFIG_LINUX_AIO } else if (s->use_aio) { |