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author | Tsutomu Itoh <t-itoh@jp.fujitsu.com> | 2011-01-20 06:19:37 +0000 |
---|---|---|
committer | Chris Mason <chris.mason@oracle.com> | 2011-02-01 07:17:27 -0500 |
commit | 98d5dc13e7e74b77ca3b4c3cbded9f48d2dbbbb7 (patch) | |
tree | 8e75f67b28b5b0d909483a06bb5258e0ba0c9789 /fs | |
parent | 5df67083488ccbad925f583b698ab38f8629a016 (diff) | |
download | kernel_samsung_smdk4412-98d5dc13e7e74b77ca3b4c3cbded9f48d2dbbbb7.zip kernel_samsung_smdk4412-98d5dc13e7e74b77ca3b4c3cbded9f48d2dbbbb7.tar.gz kernel_samsung_smdk4412-98d5dc13e7e74b77ca3b4c3cbded9f48d2dbbbb7.tar.bz2 |
btrfs: fix return value check of btrfs_start_transaction()
The error check of btrfs_start_transaction() is added, and the mistake
of the error check on several places is corrected.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/btrfs/extent-tree.c | 7 | ||||
-rw-r--r-- | fs/btrfs/inode.c | 1 | ||||
-rw-r--r-- | fs/btrfs/ioctl.c | 10 | ||||
-rw-r--r-- | fs/btrfs/relocation.c | 3 | ||||
-rw-r--r-- | fs/btrfs/super.c | 2 | ||||
-rw-r--r-- | fs/btrfs/tree-log.c | 1 | ||||
-rw-r--r-- | fs/btrfs/volumes.c | 19 |
7 files changed, 37 insertions, 6 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 9de4ff0..f07ba21 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -6271,6 +6271,8 @@ int btrfs_drop_snapshot(struct btrfs_root *root, BUG_ON(!wc); trans = btrfs_start_transaction(tree_root, 0); + BUG_ON(IS_ERR(trans)); + if (block_rsv) trans->block_rsv = block_rsv; @@ -6368,6 +6370,7 @@ int btrfs_drop_snapshot(struct btrfs_root *root, btrfs_end_transaction_throttle(trans, tree_root); trans = btrfs_start_transaction(tree_root, 0); + BUG_ON(IS_ERR(trans)); if (block_rsv) trans->block_rsv = block_rsv; } @@ -7587,7 +7590,7 @@ int btrfs_cleanup_reloc_trees(struct btrfs_root *root) if (found) { trans = btrfs_start_transaction(root, 1); - BUG_ON(!trans); + BUG_ON(IS_ERR(trans)); ret = btrfs_commit_transaction(trans, root); BUG_ON(ret); } @@ -7831,7 +7834,7 @@ static noinline int relocate_one_extent(struct btrfs_root *extent_root, trans = btrfs_start_transaction(extent_root, 1); - BUG_ON(!trans); + BUG_ON(IS_ERR(trans)); if (extent_key->objectid == 0) { ret = del_extent_zero(trans, extent_root, path, extent_key); diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5621818..36bc3f4 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2357,6 +2357,7 @@ void btrfs_orphan_cleanup(struct btrfs_root *root) */ if (is_bad_inode(inode)) { trans = btrfs_start_transaction(root, 0); + BUG_ON(IS_ERR(trans)); btrfs_orphan_del(trans, inode); btrfs_end_transaction(trans, root); iput(inode); diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 12dabe2..02d224e 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -907,6 +907,10 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root, if (new_size > old_size) { trans = btrfs_start_transaction(root, 0); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + goto out_unlock; + } ret = btrfs_grow_device(trans, device, new_size); btrfs_commit_transaction(trans, root); } else { @@ -2141,9 +2145,9 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp) path->leave_spinning = 1; trans = btrfs_start_transaction(root, 1); - if (!trans) { + if (IS_ERR(trans)) { btrfs_free_path(path); - return -ENOMEM; + return PTR_ERR(trans); } dir_id = btrfs_super_root_dir(&root->fs_info->super_copy); @@ -2337,6 +2341,8 @@ static noinline long btrfs_ioctl_start_sync(struct file *file, void __user *argp u64 transid; trans = btrfs_start_transaction(root, 0); + if (IS_ERR(trans)) + return PTR_ERR(trans); transid = trans->transid; btrfs_commit_transaction_async(trans, root, 0); diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index ea99654..1f5556a 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -2028,6 +2028,7 @@ static noinline_for_stack int merge_reloc_root(struct reloc_control *rc, while (1) { trans = btrfs_start_transaction(root, 0); + BUG_ON(IS_ERR(trans)); trans->block_rsv = rc->block_rsv; ret = btrfs_block_rsv_check(trans, root, rc->block_rsv, @@ -3665,6 +3666,7 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc) while (1) { trans = btrfs_start_transaction(rc->extent_root, 0); + BUG_ON(IS_ERR(trans)); if (update_backref_cache(trans, &rc->backref_cache)) { btrfs_end_transaction(trans, rc->extent_root); @@ -4033,6 +4035,7 @@ static noinline_for_stack int mark_garbage_root(struct btrfs_root *root) int ret; trans = btrfs_start_transaction(root->fs_info->tree_root, 0); + BUG_ON(IS_ERR(trans)); memset(&root->root_item.drop_progress, 0, sizeof(root->root_item.drop_progress)); diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index f4e45fd..0209b5f 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -623,6 +623,8 @@ int btrfs_sync_fs(struct super_block *sb, int wait) btrfs_wait_ordered_extents(root, 0, 0); trans = btrfs_start_transaction(root, 0); + if (IS_ERR(trans)) + return PTR_ERR(trans); ret = btrfs_commit_transaction(trans, root); return ret; } diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 6d66e5c..a4bbb85 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -3112,6 +3112,7 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree) BUG_ON(!path); trans = btrfs_start_transaction(fs_info->tree_root, 0); + BUG_ON(IS_ERR(trans)); wc.trans = trans; wc.pin = 1; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index f2d2f4c..7cad593 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1212,6 +1212,10 @@ static int btrfs_rm_dev_item(struct btrfs_root *root, return -ENOMEM; trans = btrfs_start_transaction(root, 0); + if (IS_ERR(trans)) { + btrfs_free_path(path); + return PTR_ERR(trans); + } key.objectid = BTRFS_DEV_ITEMS_OBJECTID; key.type = BTRFS_DEV_ITEM_KEY; key.offset = device->devid; @@ -1604,6 +1608,12 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) } trans = btrfs_start_transaction(root, 0); + if (IS_ERR(trans)) { + kfree(device); + ret = PTR_ERR(trans); + goto error; + } + lock_chunks(root); device->barriers = 1; @@ -1872,7 +1882,7 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, return ret; trans = btrfs_start_transaction(root, 0); - BUG_ON(!trans); + BUG_ON(IS_ERR(trans)); lock_chunks(root); @@ -2046,7 +2056,7 @@ int btrfs_balance(struct btrfs_root *dev_root) BUG_ON(ret); trans = btrfs_start_transaction(dev_root, 0); - BUG_ON(!trans); + BUG_ON(IS_ERR(trans)); ret = btrfs_grow_device(trans, device, old_size); BUG_ON(ret); @@ -2212,6 +2222,11 @@ again: /* Shrinking succeeded, else we would be at "done". */ trans = btrfs_start_transaction(root, 0); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + goto done; + } + lock_chunks(root); device->disk_total_bytes = new_size; |