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block: Add reference parameter to bdrv_open()

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Allow bdrv_open() to handle references to existing block devices just as
bdrv_file_open() is already capable of.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2014-02-18 18:33:06 +01:00 • committed by Kevin Wolf
parent f67503e5bd
commit ddf5636dc9
10 changed files with 61 additions and 27 deletions
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2
block/vvfat.c
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@ -2937,7 +2937,7 @@ static int enable_write_target(BDRVVVFATState *s)
}
s->qcow = NULL;
ret = bdrv_open(&s->qcow, s->qcow_filename, NULL,
ret = bdrv_open(&s->qcow, s->qcow_filename, NULL, NULL,
BDRV_O_RDWR | BDRV_O_CACHE_WB | BDRV_O_NO_FLUSH, bdrv_qcow,
&local_err);
if (ret < 0) {