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authorChristoph Hellwig <hch@lst.de>2011-01-24 13:32:41 +0100
committerKevin Wolf <kwolf@redhat.com>2011-01-31 10:03:00 +0100
commitdb97ee6a976bacbb0d18818e951cfc41b39269a7 (patch)
tree14c8b30a7b745f84da878aab6f35220dd701b79f /block.c
parent6d4a2b3a47959f02e7f307f50396e70e8464f95e (diff)
block: tell drivers about an image resize
Extend the change_cb callback with a reason argument, and use it to tell drivers about size changes. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r--block.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/block.c b/block.c
index 7ad3ddfea5..998df1b54b 100644
--- a/block.c
+++ b/block.c
@@ -645,7 +645,7 @@ int bdrv_open(BlockDriverState *bs, const char *filename, int flags,
/* call the change callback */
bs->media_changed = 1;
if (bs->change_cb)
- bs->change_cb(bs->change_opaque);
+ bs->change_cb(bs->change_opaque, CHANGE_MEDIA);
}
return 0;
@@ -684,7 +684,7 @@ void bdrv_close(BlockDriverState *bs)
/* call the change callback */
bs->media_changed = 1;
if (bs->change_cb)
- bs->change_cb(bs->change_opaque);
+ bs->change_cb(bs->change_opaque, CHANGE_MEDIA);
}
}
@@ -1135,6 +1135,9 @@ int bdrv_truncate(BlockDriverState *bs, int64_t offset)
ret = drv->bdrv_truncate(bs, offset);
if (ret == 0) {
ret = refresh_total_sectors(bs, offset >> BDRV_SECTOR_BITS);
+ if (bs->change_cb) {
+ bs->change_cb(bs->change_opaque, CHANGE_SIZE);
+ }
}
return ret;
}
@@ -1366,7 +1369,8 @@ int bdrv_enable_write_cache(BlockDriverState *bs)
/* XXX: no longer used */
void bdrv_set_change_cb(BlockDriverState *bs,
- void (*change_cb)(void *opaque), void *opaque)
+ void (*change_cb)(void *opaque, int reason),
+ void *opaque)
{
bs->change_cb = change_cb;
bs->change_opaque = opaque;
@@ -1411,7 +1415,7 @@ int bdrv_set_key(BlockDriverState *bs, const char *key)
/* call the change callback now, we skipped it on open */
bs->media_changed = 1;
if (bs->change_cb)
- bs->change_cb(bs->change_opaque);
+ bs->change_cb(bs->change_opaque, CHANGE_MEDIA);
}
return ret;
}