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| author | Jeff Mahoney <jeffm@suse.com> | 2012-03-12 16:03:00 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2012-03-22 11:52:54 +0100 |
| commit | 79787eaab46121d4713ed03c8fc63b9ec3eaec76 (patch) | |
| tree | ee6b17d0811ee54ab74a03aa4e0bb92769d2f12a /fs/btrfs/file-item.c | |
| parent | 49b25e0540904be0bf558b84475c69d72e4de66e (diff) | |
| download | linux-79787eaab46121d4713ed03c8fc63b9ec3eaec76.tar.bz2 | |
btrfs: replace many BUG_ONs with proper error handling
btrfs currently handles most errors with BUG_ON. This patch is a work-in-
progress but aims to handle most errors other than internal logic
errors and ENOMEM more gracefully.
This iteration prevents most crashes but can run into lockups with
the page lock on occasion when the timing "works out."
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Diffstat (limited to 'fs/btrfs/file-item.c')
| -rw-r--r-- | fs/btrfs/file-item.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 89af104c7569..a14dbca5974e 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -59,7 +59,7 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans, sizeof(*item)); if (ret < 0) goto out; - BUG_ON(ret); + BUG_ON(ret); /* Can't happen */ leaf = path->nodes[0]; item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_file_extent_item); @@ -431,7 +431,7 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, offset = page_offset(bvec->bv_page) + bvec->bv_offset; ordered = btrfs_lookup_ordered_extent(inode, offset); - BUG_ON(!ordered); + BUG_ON(!ordered); /* Logic error */ sums->bytenr = ordered->start; while (bio_index < bio->bi_vcnt) { @@ -450,11 +450,11 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode, sums = kzalloc(btrfs_ordered_sum_size(root, bytes_left), GFP_NOFS); - BUG_ON(!sums); + BUG_ON(!sums); /* -ENOMEM */ sector_sum = sums->sums; sums->len = bytes_left; ordered = btrfs_lookup_ordered_extent(inode, offset); - BUG_ON(!ordered); + BUG_ON(!ordered); /* Logic error */ sums->bytenr = ordered->start; } @@ -643,7 +643,10 @@ int btrfs_del_csums(struct btrfs_trans_handle *trans, * item changed size or key */ ret = btrfs_split_item(trans, root, path, &key, offset); - BUG_ON(ret && ret != -EAGAIN); + if (ret && ret != -EAGAIN) { + btrfs_abort_transaction(trans, root, ret); + goto out; + } key.offset = end_byte - 1; } else { |