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Commit 33c0022f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 

Pull btrfs fixes from Chris Mason.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: limit the path size in send to PATH_MAX
  Btrfs: correctly set profile flags on seqlock retry
  Btrfs: use correct key when repeating search for extent item
  Btrfs: fix inode caching vs tree log
  Btrfs: fix possible memory leaks in open_ctree()
  Btrfs: avoid triggering bug_on() when we fail to start inode caching task
  Btrfs: move btrfs_{set,clear}_and_info() to ctree.h
  btrfs: replace error code from btrfs_drop_extents
  btrfs: Change the hole range to a more accurate value.
  btrfs: fix use-after-free in mount_subvol()
parents 2b9d1c05 cfd4a535

fs/btrfs/ctree.h

+14 −0
Original line number Diff line number Diff line
@@ -2058,6 +2058,20 @@ struct btrfs_ioctl_defrag_range_args { 
#define btrfs_raw_test_opt(o, opt)	((o) & BTRFS_MOUNT_##opt)

#define btrfs_test_opt(root, opt)	((root)->fs_info->mount_opt & \

					 BTRFS_MOUNT_##opt)

#define btrfs_set_and_info(root, opt, fmt, args...)			\

{									\

	if (!btrfs_test_opt(root, opt))					\

		btrfs_info(root->fs_info, fmt, ##args);			\

	btrfs_set_opt(root->fs_info->mount_opt, opt);			\

}



#define btrfs_clear_and_info(root, opt, fmt, args...)			\

{									\

	if (btrfs_test_opt(root, opt))					\

		btrfs_info(root->fs_info, fmt, ##args);			\

	btrfs_clear_opt(root->fs_info->mount_opt, opt);			\

}



/*

 * Inode flags

 */

fs/btrfs/disk-io.c

+5 −5
Original line number Diff line number Diff line
@@ -2861,7 +2861,7 @@ int open_ctree(struct super_block *sb, 
			printk(KERN_ERR "BTRFS: failed to read log tree\n");

			free_extent_buffer(log_tree_root->node);

			kfree(log_tree_root);

			goto fail_trans_kthread;

			goto fail_qgroup;

		}

		/* returns with log_tree_root freed on success */

		ret = btrfs_recover_log_trees(log_tree_root);
@@ -2870,24 +2870,24 @@ int open_ctree(struct super_block *sb, 
				    "Failed to recover log tree");

			free_extent_buffer(log_tree_root->node);

			kfree(log_tree_root);

			goto fail_trans_kthread;

			goto fail_qgroup;

		}



		if (sb->s_flags & MS_RDONLY) {

			ret = btrfs_commit_super(tree_root);

			if (ret)

				goto fail_trans_kthread;

				goto fail_qgroup;

		}

	}



	ret = btrfs_find_orphan_roots(tree_root);

	if (ret)

		goto fail_trans_kthread;

		goto fail_qgroup;



	if (!(sb->s_flags & MS_RDONLY)) {

		ret = btrfs_cleanup_fs_roots(fs_info);

		if (ret)

			goto fail_trans_kthread;

			goto fail_qgroup;



		ret = btrfs_recover_relocation(tree_root);

		if (ret < 0) {

fs/btrfs/extent-tree.c

+5 −1
Original line number Diff line number Diff line
@@ -1542,6 +1542,7 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans, 
				ret = 0;

		}

		if (ret) {

			key.objectid = bytenr;

			key.type = BTRFS_EXTENT_ITEM_KEY;

			key.offset = num_bytes;

			btrfs_release_path(path);
@@ -3542,11 +3543,13 @@ static u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) 
	return extended_to_chunk(flags | tmp);

}



static u64 get_alloc_profile(struct btrfs_root *root, u64 flags)

static u64 get_alloc_profile(struct btrfs_root *root, u64 orig_flags)

{

	unsigned seq;

	u64 flags;



	do {

		flags = orig_flags;

		seq = read_seqbegin(&root->fs_info->profiles_lock);



		if (flags & BTRFS_BLOCK_GROUP_DATA)
@@ -5719,6 +5722,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans, 


			if (ret > 0 && skinny_metadata) {

				skinny_metadata = false;

				key.objectid = bytenr;

				key.type = BTRFS_EXTENT_ITEM_KEY;

				key.offset = num_bytes;

				btrfs_release_path(path);

fs/btrfs/file.c

+4 −4
Original line number Diff line number Diff line
@@ -800,7 +800,7 @@ int __btrfs_drop_extents(struct btrfs_trans_handle *trans, 
		if (start > key.offset && end < extent_end) {

			BUG_ON(del_nr > 0);

			if (extent_type == BTRFS_FILE_EXTENT_INLINE) {

				ret = -EINVAL;

				ret = -EOPNOTSUPP;

				break;

			}
@@ -846,7 +846,7 @@ int __btrfs_drop_extents(struct btrfs_trans_handle *trans, 
		 */

		if (start <= key.offset && end < extent_end) {

			if (extent_type == BTRFS_FILE_EXTENT_INLINE) {

				ret = -EINVAL;

				ret = -EOPNOTSUPP;

				break;

			}
@@ -872,7 +872,7 @@ int __btrfs_drop_extents(struct btrfs_trans_handle *trans, 
		if (start > key.offset && end >= extent_end) {

			BUG_ON(del_nr > 0);

			if (extent_type == BTRFS_FILE_EXTENT_INLINE) {

				ret = -EINVAL;

				ret = -EOPNOTSUPP;

				break;

			}
@@ -1777,7 +1777,7 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, 
	start_pos = round_down(pos, root->sectorsize);

	if (start_pos > i_size_read(inode)) {

		/* Expand hole size to cover write data, preventing empty gap */

		end_pos = round_up(pos + iov->iov_len, root->sectorsize);

		end_pos = round_up(pos + count, root->sectorsize);

		err = btrfs_cont_expand(inode, i_size_read(inode), end_pos);

		if (err) {

			mutex_unlock(&inode->i_mutex);

fs/btrfs/inode-map.c

+7 −17
Original line number Diff line number Diff line
@@ -176,7 +176,11 @@ static void start_caching(struct btrfs_root *root) 


	tsk = kthread_run(caching_kthread, root, "btrfs-ino-cache-%llu\n",

			  root->root_key.objectid);

	BUG_ON(IS_ERR(tsk)); /* -ENOMEM */

	if (IS_ERR(tsk)) {

		btrfs_warn(root->fs_info, "failed to start inode caching task");

		btrfs_clear_and_info(root, CHANGE_INODE_CACHE,

				"disabling inode map caching");

	}

}



int btrfs_find_free_ino(struct btrfs_root *root, u64 *objectid)
@@ -205,24 +209,14 @@ int btrfs_find_free_ino(struct btrfs_root *root, u64 *objectid) 


void btrfs_return_ino(struct btrfs_root *root, u64 objectid)

{

	struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;

	struct btrfs_free_space_ctl *pinned = root->free_ino_pinned;



	if (!btrfs_test_opt(root, INODE_MAP_CACHE))

		return;



again:

	if (root->cached == BTRFS_CACHE_FINISHED) {

		__btrfs_add_free_space(ctl, objectid, 1);

		__btrfs_add_free_space(pinned, objectid, 1);

	} else {

		/*

		 * If we are in the process of caching free ino chunks,

		 * to avoid adding the same inode number to the free_ino

		 * tree twice due to cross transaction, we'll leave it

		 * in the pinned tree until a transaction is committed

		 * or the caching work is done.

		 */



		down_write(&root->fs_info->commit_root_sem);

		spin_lock(&root->cache_lock);

		if (root->cached == BTRFS_CACHE_FINISHED) {
@@ -234,10 +228,6 @@ void btrfs_return_ino(struct btrfs_root *root, u64 objectid) 


		start_caching(root);



		if (objectid <= root->cache_progress ||

		    objectid >= root->highest_objectid)

			__btrfs_add_free_space(ctl, objectid, 1);

		else

		__btrfs_add_free_space(pinned, objectid, 1);



		up_write(&root->fs_info->commit_root_sem);