md/dm-vdo/slab-depot.h

28  * A slab_depot is responsible for managing all of the slabs and block allocators of a VDO. It has
29  * a single array of slabs in order to eliminate the need for additional math in order to compute
33  * slabs assigned to that zone. The concurrency guarantees of this single-threaded model allow the
282 	/* The queue of slabs to scrub first */
284 	/* The queue of slabs to scrub once there are no high_priority_slabs */
285 	struct list_head slabs;
290 	 * The number of slabs that are unrecovered or being scrubbed. This field is modified by
297 	/* Whether to only scrub high-priority slabs */
305 /* A sub-structure for applying actions in parallel to all an allocator's slabs. */
307 	/* The number of slabs performing a slab action */
309 	/* The method to call when a slab action has been completed by all slabs */
313 /* A slab_iterator is a structure for iterating over a set of slabs. */
315 	struct vdo_slab **slabs;
322  * The slab_summary provides hints during load and recovery about the state of the slabs in order
326  * used to prioritize scrubbing), the cleanliness of a slab (so that clean slabs containing free
340  * A slab status is a very small structure for use in determining the ordering of slabs in the
388 	/* The number of slabs in this allocator */
392 	/* The reduced priority level used to preserve unopened slabs */
396 	/* The actor for applying an action to all slabs */
401 	/* A priority queue containing all slabs available for allocation */
441 	/* Iterator over the slabs to be erased */
475 	/* Determines how slabs should be queued during load */
485 	/* Array of pointers to individually allocated slabs */
486 	struct vdo_slab **slabs;
487 	/* The number of slabs currently allocated and stored in 'slabs' */
490 	/* Array of pointers to a larger set of slabs (used during resize) */
492 	/* The number of slabs currently allocated and stored in 'new_slabs' */