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Re: [Qemu-block] [Qemu-devel] [PATCH for-2.5 v2 0/4] block: replace IOV_
From: |
Fam Zheng |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH for-2.5 v2 0/4] block: replace IOV_MAX with BlockLimits.max_iov |
Date: |
Fri, 10 Jul 2015 14:26:12 +0800 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Thu, 07/09 10:56, Stefan Hajnoczi wrote:
> v2:
> * Default to IOV_MAX instead of INT_MAX [Peter Lieven]
>
> This series depends on "[PATCH] block/mirror: limit qiov to IOV_MAX elements".
>
> IOV_MAX has been hardcoded in several places since preadv()/pwritev()/etc
> refuse to take more iovecs per call. That's actually an implementation detail
> of raw-posix and we shouldn't spread that across the codebase.
>
> This series adds BlockLimits.max_iov (similar to BlockLimits.max_transfer_len
> and other fields). Current IOV_MAX users are converted to blk_get_max_iov().
>
> By the way, the IOV_MAX vs BlockLimits.max_iov naming is slightly confusing
> but
> follows the BlockLimits field naming convention. Once IOV_MAX is banished no
> one will be bothered by the reverse naming anymore.
>
> Suggested-by: Kevin Wolf <address@hidden>
Series:
Reviewed-by: Fam Zheng <address@hidden>