Lines Matching full:bitmap

3  * This contains the io-permission bitmap code - written by obz, with changes
9 #include <linux/bitmap.h>
27 		 * Take a refcount on current's bitmap. It can be used by  in io_bitmap_share()
28 		 * both tasks as long as none of them changes the bitmap.  in io_bitmap_share()
63  * This changes the io permissions bitmap in the current task.
79 	 * IO bitmap up. ioperm() is much less timing critical than clone(),  in ksys_ioperm()
84 		/* No point to allocate a bitmap just to clear permissions */  in ksys_ioperm()
91 		memset(iobm->bitmap, 0xff, sizeof(iobm->bitmap));  in ksys_ioperm()
96 	 * If the bitmap is not shared, then nothing can take a refcount as  in ksys_ioperm()
109 	 * Store the bitmap pointer (might be the same if the task already  in ksys_ioperm()
110 	 * head one). Must be done here so freeing the bitmap when all  in ksys_ioperm()
118 	 * Update the tasks bitmap. The update of the TSS bitmap happens on  in ksys_ioperm()
122 		bitmap_clear(iobm->bitmap, from, num);  in ksys_ioperm()
124 		bitmap_set(iobm->bitmap, from, num);  in ksys_ioperm()
132 		if (iobm->bitmap[i] != ~0UL)  in ksys_ioperm()