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Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r--fs/btrfs/inode.c98
1 files changed, 53 insertions, 45 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ae762dab37f8..15fceefbca0a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1061,7 +1061,8 @@ static noinline int run_delalloc_nocow(struct inode *inode,
u64 ino = btrfs_ino(inode);
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return -ENOMEM;
nolock = btrfs_is_free_space_inode(root, inode);
@@ -1282,17 +1283,16 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page,
return ret;
}
-static int btrfs_split_extent_hook(struct inode *inode,
- struct extent_state *orig, u64 split)
+static void btrfs_split_extent_hook(struct inode *inode,
+ struct extent_state *orig, u64 split)
{
/* not delalloc, ignore it */
if (!(orig->state & EXTENT_DELALLOC))
- return 0;
+ return;
spin_lock(&BTRFS_I(inode)->lock);
BTRFS_I(inode)->outstanding_extents++;
spin_unlock(&BTRFS_I(inode)->lock);
- return 0;
}
/*
@@ -1301,18 +1301,17 @@ static int btrfs_split_extent_hook(struct inode *inode,
* extents, such as when we are doing sequential writes, so we can properly
* account for the metadata space we'll need.
*/
-static int btrfs_merge_extent_hook(struct inode *inode,
- struct extent_state *new,
- struct extent_state *other)
+static void btrfs_merge_extent_hook(struct inode *inode,
+ struct extent_state *new,
+ struct extent_state *other)
{
/* not delalloc, ignore it */
if (!(other->state & EXTENT_DELALLOC))
- return 0;
+ return;
spin_lock(&BTRFS_I(inode)->lock);
BTRFS_I(inode)->outstanding_extents--;
spin_unlock(&BTRFS_I(inode)->lock);
- return 0;
}
/*
@@ -1320,8 +1319,8 @@ static int btrfs_merge_extent_hook(struct inode *inode,
* bytes in this file, and to maintain the list of inodes that
* have pending delalloc work to be done.
*/
-static int btrfs_set_bit_hook(struct inode *inode,
- struct extent_state *state, int *bits)
+static void btrfs_set_bit_hook(struct inode *inode,
+ struct extent_state *state, int *bits)
{
/*
@@ -1351,14 +1350,13 @@ static int btrfs_set_bit_hook(struct inode *inode,
}
spin_unlock(&root->fs_info->delalloc_lock);
}
- return 0;
}
/*
* extent_io.c clear_bit_hook, see set_bit_hook for why
*/
-static int btrfs_clear_bit_hook(struct inode *inode,
- struct extent_state *state, int *bits)
+static void btrfs_clear_bit_hook(struct inode *inode,
+ struct extent_state *state, int *bits)
{
/*
* set_bit and clear bit hooks normally require _irqsave/restore
@@ -1395,7 +1393,6 @@ static int btrfs_clear_bit_hook(struct inode *inode,
}
spin_unlock(&root->fs_info->delalloc_lock);
}
- return 0;
}
/*
@@ -1645,7 +1642,8 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans,
int ret;
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return -ENOMEM;
path->leave_spinning = 1;
@@ -2215,7 +2213,8 @@ int btrfs_orphan_add(struct btrfs_trans_handle *trans, struct inode *inode)
if (!root->orphan_block_rsv) {
block_rsv = btrfs_alloc_block_rsv(root);
- BUG_ON(!block_rsv);
+ if (!block_rsv)
+ return -ENOMEM;
}
spin_lock(&root->orphan_lock);
@@ -2517,7 +2516,9 @@ static void btrfs_read_locked_inode(struct inode *inode)
filled = true;
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ goto make_bad;
+
path->leave_spinning = 1;
memcpy(&location, &BTRFS_I(inode)->location, sizeof(location));
@@ -2998,13 +2999,16 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
ret = btrfs_unlink_inode(trans, root, dir, dentry->d_inode,
dentry->d_name.name, dentry->d_name.len);
- BUG_ON(ret);
+ if (ret)
+ goto out;
if (inode->i_nlink == 0) {
ret = btrfs_orphan_add(trans, inode);
- BUG_ON(ret);
+ if (ret)
+ goto out;
}
+out:
nr = trans->blocks_used;
__unlink_end_trans(trans, root);
btrfs_btree_balance_dirty(root, nr);
@@ -3147,6 +3151,11 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
BUG_ON(new_size > 0 && min_type != BTRFS_EXTENT_DATA_KEY);
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+ path->reada = -1;
+
if (root->ref_cows || root == root->fs_info->tree_root)
btrfs_drop_extent_cache(inode, new_size & (~mask), (u64)-1, 0);
@@ -3159,10 +3168,6 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
if (min_type == 0 && root == BTRFS_I(inode)->root)
btrfs_kill_delayed_inode_items(inode);
- path = btrfs_alloc_path();
- BUG_ON(!path);
- path->reada = -1;
-
key.objectid = ino;
key.offset = (u64)-1;
key.type = (u8)-1;
@@ -3690,7 +3695,8 @@ static int btrfs_inode_by_name(struct inode *dir, struct dentry *dentry,
int ret = 0;
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return -ENOMEM;
di = btrfs_lookup_dir_item(NULL, root, path, btrfs_ino(dir), name,
namelen, 0);
@@ -3946,6 +3952,7 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
struct btrfs_root *root, int *new)
{
struct inode *inode;
+ int bad_inode = 0;
inode = btrfs_iget_locked(s, location->objectid, root);
if (!inode)
@@ -3955,10 +3962,19 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
BTRFS_I(inode)->root = root;
memcpy(&BTRFS_I(inode)->location, location, sizeof(*location));
btrfs_read_locked_inode(inode);
- inode_tree_add(inode);
- unlock_new_inode(inode);
- if (new)
- *new = 1;
+ if (!is_bad_inode(inode)) {
+ inode_tree_add(inode);
+ unlock_new_inode(inode);
+ if (new)
+ *new = 1;
+ } else {
+ bad_inode = 1;
+ }
+ }
+
+ if (bad_inode) {
+ iput(inode);
+ inode = ERR_PTR(-ESTALE);
}
return inode;
@@ -4451,7 +4467,8 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
int owner;
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path)
+ return ERR_PTR(-ENOMEM);
inode = new_inode(root->fs_info->sb);
if (!inode) {
@@ -6711,19 +6728,6 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
return 0;
}
-/* helper function for file defrag and space balancing. This
- * forces readahead on a given range of bytes in an inode
- */
-unsigned long btrfs_force_ra(struct address_space *mapping,
- struct file_ra_state *ra, struct file *file,
- pgoff_t offset, pgoff_t last_index)
-{
- pgoff_t req_size = last_index - offset + 1;
-
- page_cache_sync_readahead(mapping, ra, file, offset, req_size);
- return offset + req_size;
-}
-
struct inode *btrfs_alloc_inode(struct super_block *sb)
{
struct btrfs_inode *ei;
@@ -7206,7 +7210,11 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
goto out_unlock;
path = btrfs_alloc_path();
- BUG_ON(!path);
+ if (!path) {
+ err = -ENOMEM;
+ drop_inode = 1;
+ goto out_unlock;
+ }
key.objectid = btrfs_ino(inode);
key.offset = 0;
btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 19:23:19 +0000