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Btrfs: remove unused write cache pages hook
The btree inode has it's own write cache pages so we can remove this write cache pages hook as it's not used. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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parent
b5bae2612a
commit
892951a92e
1 changed files with 0 additions and 47 deletions
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@ -3347,52 +3347,6 @@ int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid)
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return btree_read_extent_buffer_pages(root, buf, 0, parent_transid);
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}
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int btree_lock_page_hook(struct page *page, void *data,
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void (*flush_fn)(void *))
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{
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struct inode *inode = page->mapping->host;
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struct btrfs_root *root = BTRFS_I(inode)->root;
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struct extent_buffer *eb;
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/*
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* We culled this eb but the page is still hanging out on the mapping,
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* carry on.
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*/
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if (!PagePrivate(page))
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goto out;
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eb = (struct extent_buffer *)page->private;
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if (!eb) {
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WARN_ON(1);
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goto out;
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}
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if (page != eb->pages[0])
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goto out;
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if (!btrfs_try_tree_write_lock(eb)) {
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flush_fn(data);
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btrfs_tree_lock(eb);
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}
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btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN);
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if (test_and_clear_bit(EXTENT_BUFFER_DIRTY, &eb->bflags)) {
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spin_lock(&root->fs_info->delalloc_lock);
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if (root->fs_info->dirty_metadata_bytes >= eb->len)
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root->fs_info->dirty_metadata_bytes -= eb->len;
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else
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WARN_ON(1);
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spin_unlock(&root->fs_info->delalloc_lock);
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}
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btrfs_tree_unlock(eb);
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out:
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if (!trylock_page(page)) {
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flush_fn(data);
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lock_page(page);
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}
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return 0;
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}
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static int btrfs_check_super_valid(struct btrfs_fs_info *fs_info,
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int read_only)
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{
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@ -3787,7 +3741,6 @@ int btrfs_cleanup_transaction(struct btrfs_root *root)
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}
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static struct extent_io_ops btree_extent_io_ops = {
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.write_cache_pages_lock_hook = btree_lock_page_hook,
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.readpage_end_io_hook = btree_readpage_end_io_hook,
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.readpage_io_failed_hook = btree_io_failed_hook,
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.submit_bio_hook = btree_submit_bio_hook,
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