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authorFam Zheng <famz@redhat.com>2013-11-13 18:29:43 +0800
committerKevin Wolf <kwolf@redhat.com>2013-11-29 13:40:33 +0100
commite4654d2d9406016d6e4e296ba8db3d118caf9ff6 (patch)
treec994b3434ee97c501a8fe12fd7f812a3c76e3651 /bsd-user
parentf4a193e717e6b5179a2e57423bfe110b724662d8 (diff)
block: per caller dirty bitmap
Previously a BlockDriverState has only one dirty bitmap, so only one caller (e.g. a block job) can keep track of writing. This changes the dirty bitmap to a list and creates a BdrvDirtyBitmap for each caller, the lifecycle is managed with these new functions: bdrv_create_dirty_bitmap bdrv_release_dirty_bitmap Where BdrvDirtyBitmap is a linked list wrapper structure of HBitmap. In place of bdrv_set_dirty_tracking, a BdrvDirtyBitmap pointer argument is added to these functions, since each caller has its own dirty bitmap: bdrv_get_dirty bdrv_dirty_iter_init bdrv_get_dirty_count bdrv_set_dirty and bdrv_reset_dirty prototypes are unchanged but will internally walk the list of all dirty bitmaps and set them one by one. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'bsd-user')
0 files changed, 0 insertions, 0 deletions