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block: Move initialisation of BlockLimits to bdrv_refresh_limits()

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This function separates filling the BlockLimits from bdrv_open(), which
allows it to call it from other operations which may change the limits
(e.g. modifications to the backing file chain or bdrv_reopen)

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
This commit is contained in:
Kevin Wolf 2013-12-11 19:26:16 +01:00
parent dabfa6cc2e
commit d34682cd4a
6 changed files with 87 additions and 23 deletions
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11
block/qed.c
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@ -495,7 +495,6 @@ static int bdrv_qed_open(BlockDriverState *bs, QDict *options, int flags,
}
}
bs->bl.write_zeroes_alignment = s->header.cluster_size >> BDRV_SECTOR_BITS;
s->need_check_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
qed_need_check_timer_cb, s);
@ -507,6 +506,15 @@ out:
return ret;
}
static int bdrv_qed_refresh_limits(BlockDriverState *bs)
{
BDRVQEDState *s = bs->opaque;
bs->bl.write_zeroes_alignment = s->header.cluster_size >> BDRV_SECTOR_BITS;
return 0;
}
/* We have nothing to do for QED reopen, stubs just return
* success */
static int bdrv_qed_reopen_prepare(BDRVReopenState *state,
@ -1616,6 +1624,7 @@ static BlockDriver bdrv_qed = {
.bdrv_truncate = bdrv_qed_truncate,
.bdrv_getlength = bdrv_qed_getlength,
.bdrv_get_info = bdrv_qed_get_info,
.bdrv_refresh_limits = bdrv_qed_refresh_limits,
.bdrv_change_backing_file = bdrv_qed_change_backing_file,
.bdrv_invalidate_cache = bdrv_qed_invalidate_cache,
.bdrv_check = bdrv_qed_check,