Displaying 1 result from an estimated 1 matches for "sb_buffer".
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2008 Jan 07
1
[PATCH]Add rollback support for the converter
...position.
- * This function is dangerous, it modifies a block used by ext2fs.
+ * Migrate super block to it's default position and zero 0 ~ 16k
*/
-static int migrate_super_block(struct btrfs_root *root, u64 sb_offset)
-{
- int ret = -1;
- struct extent_buffer *old_eb;
- struct extent_buffer *sb_buffer;
- struct btrfs_trans_handle *trans;
-
- BUG_ON(sb_offset != BTRFS_SUPER_INFO_OFFSET);
- sb_buffer = read_tree_block(root, sb_offset, 512);
- if (!sb_buffer)
- goto fail;
- memset_extent_buffer(sb_buffer, 0, 0, sb_buffer->len);
- old_eb = root->fs_info->sb_buffer;
- root->fs_info->s...