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raw-posix: report unwritten extents as zero

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These are created for example with XFS_IOC_ZERO_RANGE.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Paolo Bonzini 2013-09-04 19:00:36 +02:00 committed by Stefan Hajnoczi
parent 63390a8d14
commit f5f7abcfd5
1 changed files with 3 additions and 0 deletions
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block/raw-posix.c
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@ -1128,6 +1128,9 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
} else { } else {
data = f.fe.fe_logical; data = f.fe.fe_logical;
hole = f.fe.fe_logical + f.fe.fe_length; 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 #elif defined SEEK_HOLE && defined SEEK_DATA