Btrfs: check if extent buffer is aligned to sectorsize

[cascardo/linux.git] / fs / btrfs / disk-io.c

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 1142127..7b5d5e8 100644 (file)
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1098,7 +1098,7 @@ void readahead_tree_block(struct btrfs_root *root, u64 bytenr)
        struct inode *btree_inode = root->fs_info->btree_inode;
 
        buf = btrfs_find_create_tree_block(root, bytenr);
-       if (!buf)
+       if (IS_ERR(buf))
                return;
        read_extent_buffer_pages(&BTRFS_I(btree_inode)->io_tree,
                                 buf, 0, WAIT_NONE, btree_get_extent, 0);
@@ -1114,7 +1114,7 @@ int reada_tree_block_flagged(struct btrfs_root *root, u64 bytenr,
        int ret;
 
        buf = btrfs_find_create_tree_block(root, bytenr);
-       if (!buf)
+       if (IS_ERR(buf))
                return 0;
 
        set_bit(EXTENT_BUFFER_READAHEAD, &buf->bflags);
@@ -1172,8 +1172,8 @@ struct extent_buffer *read_tree_block(struct btrfs_root *root, u64 bytenr,
        int ret;
 
        buf = btrfs_find_create_tree_block(root, bytenr);
-       if (!buf)
-               return ERR_PTR(-ENOMEM);
+       if (IS_ERR(buf))
+               return buf;
 
        ret = btree_read_extent_buffer_pages(root, buf, 0, parent_transid);
        if (ret) {