Tsutomu Itoh
2011-Apr-28 09:10 UTC
[PATCH] Btrfs: return error to caller if read_one_inode() fails
When read_one_inode() fails, error code is returned to caller instead
of BUG_ON().
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
---
fs/btrfs/tree-log.c | 24 ++++++++++++++++++------
1 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index f997ec0..1bce4fa 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -678,7 +678,10 @@ static noinline int drop_one_dir_item(struct
btrfs_trans_handle *trans,
btrfs_release_path(root, path);
inode = read_one_inode(root, location.objectid);
- BUG_ON(!inode);
+ if (!inode) {
+ kfree(name);
+ return -EIO;
+ }
ret = link_to_fixup_dir(trans, root, path, location.objectid);
BUG_ON(ret);
@@ -817,7 +820,10 @@ static noinline int add_inode_ref(struct btrfs_trans_handle
*trans,
return -ENOENT;
inode = read_one_inode(root, key->objectid);
- BUG_ON(!inode);
+ if (!inode) {
+ iput(dir);
+ return -EIO;
+ }
ref_ptr = btrfs_item_ptr_offset(eb, slot);
ref_end = ref_ptr + btrfs_item_size_nr(eb, slot);
@@ -1054,7 +1060,8 @@ static noinline int fixup_inode_link_counts(struct
btrfs_trans_handle *trans,
btrfs_release_path(root, path);
inode = read_one_inode(root, key.offset);
- BUG_ON(!inode);
+ if (!inode)
+ return -EIO;
ret = fixup_inode_link_count(trans, root, inode);
BUG_ON(ret);
@@ -1088,7 +1095,8 @@ static noinline int link_to_fixup_dir(struct
btrfs_trans_handle *trans,
struct inode *inode;
inode = read_one_inode(root, objectid);
- BUG_ON(!inode);
+ if (!inode)
+ return -EIO;
key.objectid = BTRFS_TREE_LOG_FIXUP_OBJECTID;
btrfs_set_key_type(&key, BTRFS_ORPHAN_ITEM_KEY);
@@ -1175,7 +1183,8 @@ static noinline int replay_one_name(struct
btrfs_trans_handle *trans,
int ret;
dir = read_one_inode(root, key->objectid);
- BUG_ON(!dir);
+ if (!dir)
+ return -EIO;
name_len = btrfs_dir_name_len(eb, di);
name = kmalloc(name_len, GFP_NOFS);
@@ -1431,7 +1440,10 @@ again:
btrfs_release_path(root, path);
btrfs_release_path(log, log_path);
inode = read_one_inode(root, location.objectid);
- BUG_ON(!inode);
+ if (!inode) {
+ kfree(name);
+ return -EIO;
+ }
ret = link_to_fixup_dir(trans, root,
path, location.objectid);
--
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