block: add gluster ifdef guard checks for SEEK_DATA/SEEK_HOLE support
commitd9b789745b88df367674e45c55df29e9c7de8d8a
authorJeff Cody <jcody@redhat.com>
Fri, 7 Oct 2016 21:48:12 +0000 (7 17:48 -0400)
committerJeff Cody <jcody@redhat.com>
Tue, 1 Nov 2016 11:55:57 +0000 (1 07:55 -0400)
tree08460bc5df5f24b4fba857c4b2ce9a5b9f51b73c
parente38f643a1de9b5afc1d133b12bcfdf205bc27654
block: add gluster ifdef guard checks for SEEK_DATA/SEEK_HOLE support

Add checks to see if the system compiling QEMU has support for
SEEK_HOLE/SEEK_DATA.  If the system does not, we will flag that seek
data is unsupported in gluster.

Note: this is not a check on whether the gluster server itself supports
SEEK_DATA (that is already done during runtime), but rather if the
compilation environment supports SEEK_DATA.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Message-id: 00370bce5c98140d6c56ad5145635ec6551265cc.1475876377.git.jcody@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
block/gluster.c