diff options
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index a4373db5967..42bf9916805 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -307,9 +307,7 @@ int csum_dirty_buffer(struct btrfs_root *root, struct page *page) goto err; } found_level = btrfs_header_level(eb); - spin_lock(&root->fs_info->hash_lock); - btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN); - spin_unlock(&root->fs_info->hash_lock); + csum_tree_block(root, eb, 0); err: free_extent_buffer(eb); @@ -1998,7 +1996,36 @@ int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid) return ret; } +int btree_lock_page_hook(struct page *page) +{ + struct inode *inode = page->mapping->host; + struct btrfs_root *root = BTRFS_I(inode)->root; + struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree; + struct extent_buffer *eb; + unsigned long len; + u64 bytenr = page_offset(page); + + if (page->private == EXTENT_PAGE_PRIVATE) + goto out; + + len = page->private >> 2; + eb = find_extent_buffer(io_tree, bytenr, len, GFP_NOFS); + if (!eb) + goto out; + + btrfs_tree_lock(eb); + spin_lock(&root->fs_info->hash_lock); + btrfs_set_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN); + spin_unlock(&root->fs_info->hash_lock); + btrfs_tree_unlock(eb); + free_extent_buffer(eb); +out: + lock_page(page); + return 0; +} + static struct extent_io_ops btree_extent_io_ops = { + .write_cache_pages_lock_hook = btree_lock_page_hook, .writepage_io_hook = btree_writepage_io_hook, .readpage_end_io_hook = btree_readpage_end_io_hook, .submit_bio_hook = btree_submit_bio_hook, |