Searched hist:ae23f78646e9635ec9cbf15dbf82a717ea1b0e69 (Results 1 – 2 of 2) sorted by relevance
| /openbmc/qemu/include/block/ |
| H A D | block.h | diff ae23f78646e9635ec9cbf15dbf82a717ea1b0e69 Wed Jun 12 15:57:15 CDT 2019 Max Reitz <mreitz@redhat.com> block: Add bdrv_supports_compressed_writes()
Filters cannot compress data themselves but they have to implement
.bdrv_co_pwritev_compressed() still (or they cannot forward compressed
writes). Therefore, checking whether
bs->drv->bdrv_co_pwritev_compressed is non-NULL is not sufficient to
know whether the node can actually handle compressed writes. This
function looks down the filter chain to see whether there is a
non-filter that can actually convert the compressed writes into
compressed data (and thus normal writes).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
|
| /openbmc/qemu/ |
| H A D | block.c | diff ae23f78646e9635ec9cbf15dbf82a717ea1b0e69 Wed Jun 12 15:57:15 CDT 2019 Max Reitz <mreitz@redhat.com> block: Add bdrv_supports_compressed_writes()
Filters cannot compress data themselves but they have to implement
.bdrv_co_pwritev_compressed() still (or they cannot forward compressed
writes). Therefore, checking whether
bs->drv->bdrv_co_pwritev_compressed is non-NULL is not sufficient to
know whether the node can actually handle compressed writes. This
function looks down the filter chain to see whether there is a
non-filter that can actually convert the compressed writes into
compressed data (and thus normal writes).
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
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