diff options
Diffstat (limited to 'fs/btrfs/reada.c')
| -rw-r--r-- | fs/btrfs/reada.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 0b034c494355..ee6f60547a8d 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -639,6 +639,35 @@ static int reada_pick_zone(struct btrfs_device *dev) return 1; } +static int reada_tree_block_flagged(struct btrfs_fs_info *fs_info, u64 bytenr, + int mirror_num, struct extent_buffer **eb) +{ + struct extent_buffer *buf = NULL; + int ret; + + buf = btrfs_find_create_tree_block(fs_info, bytenr); + if (IS_ERR(buf)) + return 0; + + set_bit(EXTENT_BUFFER_READAHEAD, &buf->bflags); + + ret = read_extent_buffer_pages(buf, WAIT_PAGE_LOCK, mirror_num); + if (ret) { + free_extent_buffer_stale(buf); + return ret; + } + + if (test_bit(EXTENT_BUFFER_CORRUPT, &buf->bflags)) { + free_extent_buffer_stale(buf); + return -EIO; + } else if (extent_buffer_uptodate(buf)) { + *eb = buf; + } else { + free_extent_buffer(buf); + } + return 0; +} + static int reada_start_machine_dev(struct btrfs_device *dev) { struct btrfs_fs_info *fs_info = dev->fs_info; |