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Commit 05912a3c authored by David Sterba's avatar David Sterba
Browse files

btrfs: drop extent_io_ops::tree_fs_info callback 



All implementations of the callback are trivial and do the same and
there's only one user. Merge everything together.

Reviewed-by: default avatarNikolay Borisov <nborisov@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent e288c080

fs/btrfs/disk-io.c

+0 −7
Original line number Diff line number Diff line
@@ -4523,12 +4523,6 @@ static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info) 
	return 0;

}



static struct btrfs_fs_info *btree_fs_info(void *private_data)

{

	struct inode *inode = private_data;

	return btrfs_sb(inode->i_sb);

}



static const struct extent_io_ops btree_extent_io_ops = {

	/* mandatory callbacks */

	.submit_bio_hook = btree_submit_bio_hook,
@@ -4537,7 +4531,6 @@ static const struct extent_io_ops btree_extent_io_ops = { 
	.merge_bio_hook = btrfs_merge_bio_hook,

	.readpage_io_failed_hook = btree_io_failed_hook,

	.set_range_writeback = btrfs_set_range_writeback,

	.tree_fs_info = btree_fs_info,



	/* optional callbacks */

};

fs/btrfs/extent_io.c

+4 −10
Original line number Diff line number Diff line
@@ -140,14 +140,6 @@ static int add_extent_changeset(struct extent_state *state, unsigned bits, 


static void flush_write_bio(struct extent_page_data *epd);



static inline struct btrfs_fs_info *

tree_fs_info(struct extent_io_tree *tree)

{

	if (tree->ops)

		return tree->ops->tree_fs_info(tree->private_data);

	return NULL;

}



int __init extent_io_init(void)

{

	extent_state_cache = kmem_cache_create("btrfs_extent_state",
@@ -564,8 +556,10 @@ alloc_extent_state_atomic(struct extent_state *prealloc) 


static void extent_io_tree_panic(struct extent_io_tree *tree, int err)

{

	btrfs_panic(tree_fs_info(tree), err,

		    "Locking error: Extent tree was modified by another thread while locked.");

	struct inode *inode = tree->private_data;



	btrfs_panic(btrfs_sb(inode->i_sb), err,

	"locking error: extent tree was modified by another thread while locked");

}



/*

fs/btrfs/extent_io.h

+0 −1
Original line number Diff line number Diff line
@@ -105,7 +105,6 @@ struct extent_io_ops { 
			      size_t size, struct bio *bio,

			      unsigned long bio_flags);

	int (*readpage_io_failed_hook)(struct page *page, int failed_mirror);

	struct btrfs_fs_info *(*tree_fs_info)(void *private_data);

	void (*set_range_writeback)(void *private_data, u64 start, u64 end);



	/*

fs/btrfs/inode.c

+0 −7
Original line number Diff line number Diff line
@@ -10473,12 +10473,6 @@ static int btrfs_readpage_io_failed_hook(struct page *page, int failed_mirror) 
	return -EAGAIN;

}



static struct btrfs_fs_info *iotree_fs_info(void *private_data)

{

	struct inode *inode = private_data;

	return btrfs_sb(inode->i_sb);

}



static void btrfs_check_extent_io_range(void *private_data, const char *caller,

					u64 start, u64 end)

{
@@ -10553,7 +10547,6 @@ static const struct extent_io_ops btrfs_extent_io_ops = { 
	.readpage_end_io_hook = btrfs_readpage_end_io_hook,

	.merge_bio_hook = btrfs_merge_bio_hook,

	.readpage_io_failed_hook = btrfs_readpage_io_failed_hook,

	.tree_fs_info = iotree_fs_info,

	.set_range_writeback = btrfs_set_range_writeback,



	/* optional callbacks */