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Re: [PATCH] block: introduce max_hw_iov for use in scsi-generic
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From: |
Halil Pasic |
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Subject: |
Re: [PATCH] block: introduce max_hw_iov for use in scsi-generic |
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Date: |
Thu, 23 Sep 2021 18:47:40 +0200 |
On Thu, 23 Sep 2021 16:28:11 +0200
Halil Pasic <pasic@linux.ibm.com> wrote:
> Can't we use some of the established constants instead of hard coding a
> qemu specific IOV_MAX?
>
> POSIX.1 seems to guarantee the availability of IOV_MAX in <limits.h>
> according to: https://man7.org/linux/man-pages/man2/readv.2.html
> and <sys/uio.h> may have UIO_MAXIOV defined.
Never mind, the
#define IOV_MAX 1024
in osdep.h is conditional and I guess we already use IOV_MAX from limit
when CONFIG_IOVEC is defined, i.e. when we don't emulate the interface.
Sorry for the noise.
Regards,
Halil