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[Qemu-devel] [PATCH v2 05/24] block: Detect unaligned length in bdrv_qio
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH v2 05/24] block: Detect unaligned length in bdrv_qiov_is_aligned() |
Date: |
Fri, 13 Dec 2013 14:22:40 +0100 |
For an O_DIRECT request to succeed, it's not only necessary that all
base addresses in the qiov are aligned, but also that each length in it
is aligned.
Signed-off-by: Kevin Wolf <address@hidden>
Reviewed-by: Wenchao Xia <address@hidden>
---
block.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/block.c b/block.c
index 8eae359..62c5a75 100644
--- a/block.c
+++ b/block.c
@@ -4561,6 +4561,9 @@ bool bdrv_qiov_is_aligned(BlockDriverState *bs,
QEMUIOVector *qiov)
if ((uintptr_t) qiov->iov[i].iov_base % bs->buffer_alignment) {
return false;
}
+ if (qiov->iov[i].iov_len % bs->buffer_alignment) {
+ return false;
+ }
}
return true;
--
1.8.1.4
- [Qemu-devel] [PATCH v2 00/24] block: Support for 512b-on-4k emulatio, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 02/24] block: Inherit opt_transfer_length, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 03/24] block: Update BlockLimits when they might have changed, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 01/24] block: Move initialisation of BlockLimits to bdrv_refresh_limits(), Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 04/24] qemu_memalign: Allow small alignments, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 06/24] block: Don't use guest sector size for qemu_blockalign(), Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 07/24] block: rename buffer_alignment to guest_block_size, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 08/24] raw: Probe required direct I/O alignment, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 05/24] block: Detect unaligned length in bdrv_qiov_is_aligned(),
Kevin Wolf <=
- [Qemu-devel] [PATCH v2 09/24] block: Introduce bdrv_aligned_preadv(), Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 10/24] block: Introduce bdrv_co_do_preadv(), Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 11/24] block: Introduce bdrv_aligned_pwritev(), Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 12/24] block: write: Handle COR dependency after I/O throttling, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 13/24] block: Introduce bdrv_co_do_pwritev(), Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 14/24] block: Switch BdrvTrackedRequest to byte granularity, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 16/24] block: Make zero-after-EOF work with larger alignment, Kevin Wolf, 2013/12/13
- [Qemu-devel] [PATCH v2 15/24] block: Allow waiting for overlapping requests between begin/end, Kevin Wolf, 2013/12/13