From a65064816d64db463f4c24bd81dcaad62fee89eb Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Thu, 23 Jun 2016 16:37:17 -0600 Subject: block: Set request_alignment during .bdrv_refresh_limits() We want to eventually stick request_alignment alongside other BlockLimits, but first, we must ensure it is populated at the same time as all other limits, rather than being a special case that is set only when a block is first opened. Add a .bdrv_refresh_limits() to all four of our legacy devices that will always be sector-only (bochs, cloop, dmg, vvfat), in spite of their recent conversion to expose a byte interface. Signed-off-by: Eric Blake Reviewed-by: Kevin Wolf Reviewed-by: Fam Zheng Signed-off-by: Kevin Wolf --- block/dmg.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'block/dmg.c') diff --git a/block/dmg.c b/block/dmg.c index 06eb5138f3..1e53cd8c0b 100644 --- a/block/dmg.c +++ b/block/dmg.c @@ -439,7 +439,6 @@ static int dmg_open(BlockDriverState *bs, QDict *options, int flags, int ret; bs->read_only = 1; - bs->request_alignment = BDRV_SECTOR_SIZE; /* No sub-sector I/O supported */ s->n_chunks = 0; s->offsets = s->lengths = s->sectors = s->sectorcounts = NULL; @@ -547,6 +546,11 @@ fail: return ret; } +static void dmg_refresh_limits(BlockDriverState *bs, Error **errp) +{ + bs->request_alignment = BDRV_SECTOR_SIZE; /* No sub-sector I/O supported */ +} + static inline int is_sector_in_chunk(BDRVDMGState* s, uint32_t chunk_num, uint64_t sector_num) { @@ -720,6 +724,7 @@ static BlockDriver bdrv_dmg = { .instance_size = sizeof(BDRVDMGState), .bdrv_probe = dmg_probe, .bdrv_open = dmg_open, + .bdrv_refresh_limits = dmg_refresh_limits, .bdrv_co_preadv = dmg_co_preadv, .bdrv_close = dmg_close, }; -- cgit v1.2.1