}
EXPORT_SYMBOL(blk_queue_prep_rq);
-/**
- * blk_queue_set_discard - set a discard_sectors function for queue
- * @q: queue
- * @dfn: prepare_discard function
- *
- * It's possible for a queue to register a discard callback which is used
- * to transform a discard request into the appropriate type for the
- * hardware. If none is registered, then discard requests are failed
- * with %EOPNOTSUPP.
- *
- */
-void blk_queue_set_discard(struct request_queue *q, prepare_discard_fn *dfn)
-{
- q->prepare_discard_fn = dfn;
-}
-EXPORT_SYMBOL(blk_queue_set_discard);
-
/**
* blk_queue_merge_bvec - set a merge_bvec function for queue
* @q: queue
lim->max_hw_segments = MAX_HW_SEGMENTS;
lim->seg_boundary_mask = BLK_SEG_BOUNDARY_MASK;
lim->max_segment_size = MAX_SEGMENT_SIZE;
- lim->max_sectors = lim->max_hw_sectors = SAFE_MAX_SECTORS;
+ lim->max_sectors = BLK_DEF_MAX_SECTORS;
+ lim->max_hw_sectors = INT_MAX;
+ lim->max_discard_sectors = SAFE_MAX_SECTORS;
lim->logical_block_size = lim->physical_block_size = lim->io_min = 512;
lim->bounce_pfn = (unsigned long)(BLK_BOUNCE_ANY >> PAGE_SHIFT);
lim->alignment_offset = 0;
q->unplug_timer.data = (unsigned long)q;
blk_set_default_limits(&q->limits);
+ blk_queue_max_sectors(q, SAFE_MAX_SECTORS);
/*
* If the caller didn't supply a lock, fall back to our embedded
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);
+/**
+ * blk_queue_max_discard_sectors - set max sectors for a single discard
+ * @q: the request queue for the device
+ * @max_discard: maximum number of sectors to discard
+ **/
+void blk_queue_max_discard_sectors(struct request_queue *q,
+ unsigned int max_discard_sectors)
+{
+ q->limits.max_discard_sectors = max_discard_sectors;
+}
+EXPORT_SYMBOL(blk_queue_max_discard_sectors);
+
/**
* blk_queue_max_phys_segments - set max phys segments for a request for this queue
* @q: the request queue for the device