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block: Fix comment for bdrv_co_get_block_status

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It returns more information than binary, fix the comment.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Fam Zheng 2014-11-10 17:10:38 +08:00 committed by Michael Tokarev
parent 00c2275c95
commit 705be728c0
2 changed files with 6 additions and 4 deletions
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6
block.c
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@ -3877,9 +3877,9 @@ typedef struct BdrvCoGetBlockStatusData {
} BdrvCoGetBlockStatusData;
/*
* Returns true iff the specified sector is present in the disk image. Drivers
* not implementing the functionality are assumed to not support backing files,
* hence all their sectors are reported as allocated.
* Returns the allocation status of the specified sectors.
* Drivers not implementing the functionality are assumed to not support
* backing files, hence all their sectors are reported as allocated.
*
* If 'sector_num' is beyond the end of the disk image the return value is 0
* and 'pnum' is set to 0.

4
include/block/block.h
View File

@ -83,7 +83,9 @@ typedef enum {
#define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS)
#define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
/* BDRV_BLOCK_DATA: data is read from bs->file or another file
/*
* Allocation status flags
* BDRV_BLOCK_DATA: data is read from bs->file or another file
* BDRV_BLOCK_ZERO: sectors read as zero
* BDRV_BLOCK_OFFSET_VALID: sector stored in bs->file as raw data
* BDRV_BLOCK_ALLOCATED: the content of the block is determined by this