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Commit 8f5fd927 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-4.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux 

Pull btrfs fixes from David Sterba:
 "There's an important revert in this pull request that needs to go to
  stable as it causes a corruption on big endian machines.

  The other fix is for FIEMAP incorrectly reporting shared extents
  before a sync and one fix for a crash in raid56.

  So far we got only one report about the BE corruption, the stable
  kernels were out for like a week, so hopefully the scope of the damage
  is low"

* tag 'for-4.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Revert "btrfs: use proper endianness accessors for super_copy"
  btrfs: add missing initialization in btrfs_check_shared
  btrfs: Fix NULL pointer exception in find_bio_stripe
parents 8757ae23 093e037c

fs/btrfs/backref.c

+1 −0
Original line number Diff line number Diff line
@@ -1519,6 +1519,7 @@ int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr) 
		if (!node)

			break;

		bytenr = node->val;

		shared.share_count = 0;

		cond_resched();

	}

fs/btrfs/raid56.c

+1 −0
Original line number Diff line number Diff line
@@ -1370,6 +1370,7 @@ static int find_bio_stripe(struct btrfs_raid_bio *rbio, 
		stripe_start = stripe->physical;

		if (physical >= stripe_start &&

		    physical < stripe_start + rbio->stripe_len &&

		    stripe->dev->bdev &&

		    bio->bi_disk == stripe->dev->bdev->bd_disk &&

		    bio->bi_partno == stripe->dev->bdev->bd_partno) {

			return i;

fs/btrfs/sysfs.c

+5 −3
Original line number Diff line number Diff line
@@ -423,7 +423,7 @@ static ssize_t btrfs_nodesize_show(struct kobject *kobj, 
{

	struct btrfs_fs_info *fs_info = to_fs_info(kobj);



	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->nodesize);

	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->super_copy->nodesize);

}



BTRFS_ATTR(, nodesize, btrfs_nodesize_show);
@@ -433,7 +433,8 @@ static ssize_t btrfs_sectorsize_show(struct kobject *kobj, 
{

	struct btrfs_fs_info *fs_info = to_fs_info(kobj);



	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->sectorsize);

	return snprintf(buf, PAGE_SIZE, "%u\n",

			fs_info->super_copy->sectorsize);

}



BTRFS_ATTR(, sectorsize, btrfs_sectorsize_show);
@@ -443,7 +444,8 @@ static ssize_t btrfs_clone_alignment_show(struct kobject *kobj, 
{

	struct btrfs_fs_info *fs_info = to_fs_info(kobj);



	return snprintf(buf, PAGE_SIZE, "%u\n", fs_info->sectorsize);

	return snprintf(buf, PAGE_SIZE, "%u\n",

			fs_info->super_copy->sectorsize);

}



BTRFS_ATTR(, clone_alignment, btrfs_clone_alignment_show);

fs/btrfs/transaction.c

+8 −12
Original line number Diff line number Diff line
@@ -1722,23 +1722,19 @@ static void update_super_roots(struct btrfs_fs_info *fs_info) 


	super = fs_info->super_copy;



	/* update latest btrfs_super_block::chunk_root refs */

	root_item = &fs_info->chunk_root->root_item;

	btrfs_set_super_chunk_root(super, root_item->bytenr);

	btrfs_set_super_chunk_root_generation(super, root_item->generation);

	btrfs_set_super_chunk_root_level(super, root_item->level);

	super->chunk_root = root_item->bytenr;

	super->chunk_root_generation = root_item->generation;

	super->chunk_root_level = root_item->level;



	/* update latest btrfs_super_block::root refs */

	root_item = &fs_info->tree_root->root_item;

	btrfs_set_super_root(super, root_item->bytenr);

	btrfs_set_super_generation(super, root_item->generation);

	btrfs_set_super_root_level(super, root_item->level);



	super->root = root_item->bytenr;

	super->generation = root_item->generation;

	super->root_level = root_item->level;

	if (btrfs_test_opt(fs_info, SPACE_CACHE))

		btrfs_set_super_cache_generation(super, root_item->generation);

		super->cache_generation = root_item->generation;

	if (test_bit(BTRFS_FS_UPDATE_UUID_TREE_GEN, &fs_info->flags))

		btrfs_set_super_uuid_tree_generation(super,

						     root_item->generation);

		super->uuid_tree_generation = root_item->generation;

}



int btrfs_transaction_in_commit(struct btrfs_fs_info *info)