Commit db593f25 authored by Marcelo Tosatti's avatar Marcelo Tosatti Committed by Kevin Wolf
Browse files

Add flag to indicate external users to block device 



Certain operations such as drive_del or resize cannot be performed
while external users (eg. block migration) reference the block device.

Add a flag to indicate that.

Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent f48905d4

block.c

+11 −0
Original line number Diff line number Diff line
@@ -2774,6 +2774,17 @@ int64_t bdrv_get_dirty_count(BlockDriverState *bs) 
    return bs->dirty_count;

}



void bdrv_set_in_use(BlockDriverState *bs, int in_use)

{

    assert(bs->in_use != in_use);

    bs->in_use = in_use;

}



int bdrv_in_use(BlockDriverState *bs)

{

    return bs->in_use;

}



int bdrv_img_create(const char *filename, const char *fmt,

                    const char *base_filename, const char *base_fmt,

                    char *options, uint64_t img_size, int flags)

block.h

+2 −0
Original line number Diff line number Diff line
@@ -241,6 +241,8 @@ void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector, 
                      int nr_sectors);

int64_t bdrv_get_dirty_count(BlockDriverState *bs);



void bdrv_set_in_use(BlockDriverState *bs, int in_use);

int bdrv_in_use(BlockDriverState *bs);



typedef enum {

    BLKDBG_L1_UPDATE,

block_int.h

+1 −0
Original line number Diff line number Diff line
@@ -199,6 +199,7 @@ struct BlockDriverState { 
    char device_name[32];

    unsigned long *dirty_bitmap;

    int64_t dirty_count;

    int in_use; /* users other than guest access, eg. block migration */

    QTAILQ_ENTRY(BlockDriverState) list;

    void *private;

};