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| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-05-09 16:49:58 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2012-06-15 14:03:42 +0200 |
| commit | 5500316ded9db5b10072334cde1e27fb37682240 (patch) | |
| tree | c02ce4c1a29b4a05d8860b6fec6f99d5b9eb26a2 /block/raw.c | |
| parent | 87267753a36798e25262ee48264bea2ab70921aa (diff) | |
| download | qemu-5500316ded9db5b10072334cde1e27fb37682240.zip qemu-5500316ded9db5b10072334cde1e27fb37682240.tar.gz qemu-5500316ded9db5b10072334cde1e27fb37682240.tar.bz2 | |
block: implement is_allocated for raw
Either FIEMAP, or SEEK_DATA+SEEK_HOLE can be used to implement the
is_allocated callback for raw files. On Linux ext4, btrfs and XFS
all support it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block/raw.c')
| -rw-r--r-- | block/raw.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/raw.c b/block/raw.c index 7086e31..09d9b48 100644 --- a/block/raw.c +++ b/block/raw.c @@ -25,6 +25,13 @@ static void raw_close(BlockDriverState *bs) { } +static int coroutine_fn raw_co_is_allocated(BlockDriverState *bs, + int64_t sector_num, + int nb_sectors, int *pnum) +{ + return bdrv_co_is_allocated(bs->file, sector_num, nb_sectors, pnum); +} + static int64_t raw_getlength(BlockDriverState *bs) { return bdrv_getlength(bs->file); @@ -108,6 +115,7 @@ static BlockDriver bdrv_raw = { .bdrv_co_readv = raw_co_readv, .bdrv_co_writev = raw_co_writev, + .bdrv_co_is_allocated = raw_co_is_allocated, .bdrv_co_discard = raw_co_discard, .bdrv_probe = raw_probe, |