fs/btrfs/volumes.c

36 #include "raid-stripe-tree.h"
3816 	struct btrfs_stripe *stripe;
3821 		stripe = btrfs_stripe_nr(chunk, i);
3822 		if (btrfs_stripe_devid(leaf, stripe) == bargs->devid)
3843 	struct btrfs_stripe *stripe;
3858 		stripe = btrfs_stripe_nr(chunk, i);
3859 		if (btrfs_stripe_devid(leaf, stripe) != bargs->devid)
3862 		stripe_offset = btrfs_stripe_offset(leaf, stripe);
5429 	 * The DUP profile stores more than one stripe per device, the
5535 		struct btrfs_io_stripe *stripe = &map->stripes[i];
5536 		struct btrfs_device *device = stripe->dev;
5538 		set_extent_bit(&device->alloc_state, stripe->physical,
5539 			       stripe->physical + map->stripe_size - 1,
5547 		struct btrfs_io_stripe *stripe = &map->stripes[i];
5548 		struct btrfs_device *device = stripe->dev;
5550 		__clear_extent_bit(&device->alloc_state, stripe->physical,
5551 				   stripe->physical + map->stripe_size - 1,
5773 	struct btrfs_stripe *stripe;
5794 	 *    not exists, or persisting a stripe of the chunk item with such ID.
5827 	stripe = &chunk->stripe;
5832 		btrfs_set_stack_stripe_devid(stripe, device->devid);
5833 		btrfs_set_stack_stripe_offset(stripe, dev_offset);
5834 		memcpy(stripe->dev_uuid, device->uuid, BTRFS_UUID_SIZE);
5835 		stripe++;
6000 		 * Fail a stripe at a time on every retry except the
6001 		 * stripe under reconstruction.
6191 	/* stripe_offset is the offset of this block in its stripe */
6202 	 * the number of our device in the stripe array
6251 			 * Special for the first stripe and
6252 			 * the last stripe:
6353 	 * For GET_READ_MIRRORS, we can only return at most 1 extra stripe for
6365 		 * Swap the last stripe stripes and reduce @nr_extra_stripes.
6366 		 * The extra stripe would still be there, but won't be accessed.
6384 	 * Stripe_nr is the stripe where this block falls.  stripe_offset is
6385 	 * the offset of this block in its stripe.
6396 		 * For full stripe start, we use previously calculated
6410 		 * For writes to RAID56, allow to write a full stripe set, but
6411 		 * no straddling of stripe sets.
6418 	 * For other RAID types and for RAID56 reads, allow a single stripe (on
6546 	 * Needs full stripe mapping.
6548 	 * Push stripe_nr back to the start of the full stripe For those cases
6549 	 * needing a full stripe, @stripe_nr is the full stripe number.
6561 	/* Return the length to the full stripe end. */
6576 	/* Just grab the data stripe directly. */
6601  *			due to factors like zones and RAID0/5/6/10 stripe
6628  *			data/P stripe error and rebuild from the remaining
6703 		 * the number of our device in the stripe array
6710 			   "stripe index math went horribly wrong, got stripe_index=%u, num_stripes=%u",
6783 		 * stripe into the bioc.
7409 		 * At least one btrfs_chunk with one stripe must be present,
7410 		 * exact stripe count check comes afterwards
8351  * - The range does not cross stripe boundary
8370 	/* The map range should not cross stripe boundary. */
8373 	/* Already mapped to single stripe. */
8377 	/* Map the RAID56 multi-stripe writes to a single one. */