From e58d84de9cb73fba1b98c57edc63e751b4171c4e Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 18 Oct 2013 08:14:45 +0200 Subject: [PATCH 20/81] raw-posix: report unwritten extents as zero RH-Author: Paolo Bonzini Message-id: <1382084091-16636-21-git-send-email-pbonzini@redhat.com> Patchwork-id: 55003 O-Subject: [RHEL 7.0 qemu-kvm PATCH 20/26] raw-posix: report unwritten extents as zero Bugzilla: 989646 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Max Reitz RH-Acked-by: Kevin Wolf These are created for example with XFS_IOC_ZERO_RANGE. Reviewed-by: Eric Blake Signed-off-by: Paolo Bonzini (cherry picked from commit f5f7abcfd50bca38ae278a9c7a3ed60fba3d76dc) --- block/raw-posix.c | 3 +++ 1 file changed, 3 insertions(+) Signed-off-by: Miroslav Rezanina --- block/raw-posix.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/block/raw-posix.c b/block/raw-posix.c index a829ce0..c7ab908 100644 --- a/block/raw-posix.c +++ b/block/raw-posix.c @@ -1128,6 +1128,9 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs, } else { data = f.fe.fe_logical; hole = f.fe.fe_logical + f.fe.fe_length; + if (f.fe.fe_flags & FIEMAP_EXTENT_UNWRITTEN) { + ret |= BDRV_BLOCK_ZERO; + } } #elif defined SEEK_HOLE && defined SEEK_DATA -- 1.7.1