| commit | 8ad5ab6148dca8aad297c134c09c84b0b92d45ed | |
| author | Paolo Bonzini <pbonzini@redhat.com> | |
| Thu, 15 Apr 2021 10:41:31 +0000 (15 12:41 +0200) | ||
| committer | Paolo Bonzini <pbonzini@redhat.com> | |
| Fri, 25 Jun 2021 08:54:12 +0000 (25 10:54 +0200) | ||
| tree | 89be86b11d732131d6c7b62f0802cb8473a818d1 | treesnapshot (tar.gz zip) |
| parent | dcafa248277732863c8a472e4e5aa1cdd41228e8 | commitdiff |
file-posix: fix max_iov for /dev/sg devices
Even though it was only called for devices that have bs->sg set (which
must be character devices), sg_get_max_segments looked at /sys/dev/block
which only works for block devices.
On Linux the sg driver has its own way to provide the maximum number of
iovecs in a scatter/gather list, so add support for it. The block device
path is kept because it will be reinstated in the next patches.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Even though it was only called for devices that have bs->sg set (which
must be character devices), sg_get_max_segments looked at /sys/dev/block
which only works for block devices.
On Linux the sg driver has its own way to provide the maximum number of
iovecs in a scatter/gather list, so add support for it. The block device
path is kept because it will be reinstated in the next patches.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
| block/file-posix.c | diffblobblamehistory |