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author | Nikolay Borisov <nborisov@suse.com> | 2020-09-14 12:37:05 +0300 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2020-10-07 13:13:19 +0300 |
commit | 208d6341e85b4f2628a90438fce5d8a2dd97d6ba (patch) | |
tree | 250c300b031e227df903de702d0391f69de0fd6d /fs | |
parent | 0420177c08b2d86034a98d45b7d3609bdc986fd2 (diff) | |
download | linux-208d6341e85b4f2628a90438fce5d8a2dd97d6ba.tar.xz |
btrfs: remove btree_get_extent
The sole purpose of this function was to satisfy the requirements of
__do_readpage. Since that function is no longer used to read metadata
pages the need to keep btree_get_extent around has also disappeared.
Simply remove it.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/btrfs/disk-io.c | 47 | ||||
-rw-r--r-- | fs/btrfs/disk-io.h | 3 |
2 files changed, 0 insertions, 50 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 0fae2caf31ef..53b588a7e150 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -205,53 +205,6 @@ void btrfs_set_buffer_lockdep_class(u64 objectid, struct extent_buffer *eb, #endif /* - * extents on the btree inode are pretty simple, there's one extent - * that covers the entire device - */ -struct extent_map *btree_get_extent(struct btrfs_inode *inode, - struct page *page, size_t pg_offset, - u64 start, u64 len) -{ - struct extent_map_tree *em_tree = &inode->extent_tree; - struct extent_map *em; - int ret; - - read_lock(&em_tree->lock); - em = lookup_extent_mapping(em_tree, start, len); - if (em) { - read_unlock(&em_tree->lock); - goto out; - } - read_unlock(&em_tree->lock); - - em = alloc_extent_map(); - if (!em) { - em = ERR_PTR(-ENOMEM); - goto out; - } - em->start = 0; - em->len = (u64)-1; - em->block_len = (u64)-1; - em->block_start = 0; - - write_lock(&em_tree->lock); - ret = add_extent_mapping(em_tree, em, 0); - if (ret == -EEXIST) { - free_extent_map(em); - em = lookup_extent_mapping(em_tree, start, len); - if (!em) - em = ERR_PTR(-EIO); - } else if (ret) { - free_extent_map(em); - em = ERR_PTR(ret); - } - write_unlock(&em_tree->lock); - -out: - return em; -} - -/* * Compute the csum of a btree block and store the result to provided buffer. */ static void csum_tree_block(struct extent_buffer *buf, u8 *result) diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index 00dc39d47ed3..89b6a709a184 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -123,9 +123,6 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, u64 objectid); int btree_lock_page_hook(struct page *page, void *data, void (*flush_fn)(void *)); -struct extent_map *btree_get_extent(struct btrfs_inode *inode, - struct page *page, size_t pg_offset, - u64 start, u64 len); int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags); int __init btrfs_end_io_wq_init(void); void __cold btrfs_end_io_wq_exit(void); |