block/drbd/drbd_actlog.c

72 	/* but the extent number is 32bit, which at an extent size of 4 MiB
243 	/* for bios crossing activity log extent boundaries,
251 	/* FIXME figure out a fast path for bios crossing AL extent boundaries */
260 	/* for bios crossing activity log extent boundaries,
294 		/* al extent number to bit */
487 	/* for bios crossing activity log extent boundaries,
546 	/* for bios crossing activity log extent boundaries,
551 	struct lc_element *extent;
558 		extent = lc_find(device->act_log, enr);
559 		if (!extent) {
560 			drbd_err(device, "al_complete_io() called on inactive extent %u\n", enr);
563 		lc_put(device->act_log, extent);
644  * this resync extent into the resync extent lru cache.
646  * Returns whether all bits have been cleared for this resync extent,
663 	 * Otherwise, that extent should be in the resync extent lru cache
785 	 * We keep a count of set bits per resync-extent in the ->rs_left
786 	 * caching member, so we need to loop and work within the resync extent
794 		 * the resync extent of the current start bit number,
956  * drbd_rs_begin_io() - Gets an extent in the resync LRU cache and sets it to BME_LOCKED
1008  * drbd_try_rs_begin_io() - Gets an extent in the resync LRU cache, does not sleep
1012  * Gets an extent in the resync LRU cache, sets it to BME_NO_WRITES, then
1029 	 * not yet BME_LOCKED) extent needs to be kicked out explicitly if we
1030 	 * need to throttle. There is at most one such half-locked extent,
1043 		 * we are scheduled this extent has been "synced" by new
1045 		 * extent we keep the refcount on.
1046 		 * so we remembered which extent we had to try again, and
1154 			drbd_err(device, "drbd_rs_complete_io() called, but extent not found\n");