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migration: update comments of migration bitmap 

Since the ram bitmap and the unsent bitmap are split by RAMBlock
in commit 6b6712e, it's better to update the comments about them.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Message-Id: <1555311089-18610-1-git-send-email-wang.yi59@zte.com.cn>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Yi Wang 2019-04-15 14:51:29 +08:00 committed by Dr. David Alan Gilbert
parent bf21297923
commit 4633456ced
1 changed files with 1 additions and 3 deletions
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4
migration/ram.c
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@ -1630,8 +1630,6 @@ static int save_xbzrle_page(RAMState *rs, uint8_t **current_data,
/**
* migration_bitmap_find_dirty: find the next dirty page from start
*
* Called with rcu_read_lock() to protect migration_bitmap
*
* Returns the byte offset within memory region of the start of a dirty page
*
* @rs: current RAM state
@ -2681,7 +2679,7 @@ static void ram_save_cleanup(void *opaque)
RAMBlock *block;
/* caller have hold iothread lock or is in a bh, so there is
* no writing race against this migration_bitmap
* no writing race against the migration bitmap
*/
memory_global_dirty_log_stop();