diff options
| author | Andi Kleen <andi@firstfloor.org> | 2010-10-29 15:14:31 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2010-10-29 15:14:31 -0400 |
| commit | 411fc6bcef54f828a5458f4730c68abdf13c6bf0 (patch) | |
| tree | 89b91cd7e0d7633e9d6e386e388bd0493165f66c | |
| parent | d0b678cb0a26783ab7238784f1e7e608e5caafa3 (diff) | |
| download | linux-411fc6bcef54f828a5458f4730c68abdf13c6bf0.tar.bz2 | |
Btrfs: Fix variables set but not read (bugs found by gcc 4.6)
These are all the cases where a variable is set, but not
read which are really bugs.
- Couple of incorrect error handling fixed.
- One incorrect use of a allocation policy
- Some other things
Still needs more review.
Found by gcc 4.6's new warnings.
[akpm@linux-foundation.org: fix build. Might have been bitrot]
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
| -rw-r--r-- | fs/btrfs/dir-item.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/extent_io.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/inode.c | 6 | ||||
| -rw-r--r-- | fs/btrfs/relocation.c | 4 | ||||
| -rw-r--r-- | fs/btrfs/tree-log.c | 2 |
5 files changed, 10 insertions, 6 deletions
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c index e9103b3baa49..f0cad5ae5be7 100644 --- a/fs/btrfs/dir-item.c +++ b/fs/btrfs/dir-item.c @@ -427,5 +427,5 @@ int btrfs_delete_one_dir_name(struct btrfs_trans_handle *trans, ret = btrfs_truncate_item(trans, root, path, item_len - sub_item_len, 1); } - return 0; + return ret; } diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 4c639e156296..7dc31c39ca59 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2779,6 +2779,8 @@ int extent_prepare_write(struct extent_io_tree *tree, NULL, 1, end_bio_extent_preparewrite, 0, 0, 0); + if (ret && !err) + err = ret; iocount++; block_start = block_start + iosize; } else { diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 9f08136b10c4..0aa24717cd58 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1389,7 +1389,7 @@ int btrfs_merge_bio_hook(struct page *page, unsigned long offset, if (map_length < length + size) return 1; - return 0; + return ret; } /* @@ -2709,8 +2709,8 @@ static int check_path_shared(struct btrfs_root *root, { struct extent_buffer *eb; int level; - int ret; u64 refs = 1; + int uninitialized_var(ret); for (level = 0; level < BTRFS_MAX_LEVEL; level++) { if (!path->nodes[level]) @@ -2723,7 +2723,7 @@ static int check_path_shared(struct btrfs_root *root, if (refs > 1) return 1; } - return 0; + return ret; /* XXX callers? */ } /* diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index fd0714475db7..045c9c2b2d7e 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3094,6 +3094,8 @@ static int add_tree_block(struct reloc_control *rc, BUG_ON(item_size != sizeof(struct btrfs_extent_item_v0)); ret = get_ref_objectid_v0(rc, path, extent_key, &ref_owner, NULL); + if (ret < 0) + return ret; BUG_ON(ref_owner >= BTRFS_MAX_LEVEL); level = (int)ref_owner; /* FIXME: get real generation */ @@ -4218,7 +4220,7 @@ int btrfs_reloc_clone_csums(struct inode *inode, u64 file_pos, u64 len) btrfs_add_ordered_sum(inode, ordered, sums); } btrfs_put_ordered_extent(ordered); - return 0; + return ret; } void btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index fb102a9aee9c..224fb5b3daad 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -2273,7 +2273,7 @@ fail: } btrfs_end_log_trans(root); - return 0; + return err; } /* see comments for btrfs_del_dir_entries_in_log */ |