Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: The file argument for fsync() is never null
Btrfs: handle ERR_PTR from posix_acl_from_xattr()
Btrfs: avoid BUG when dropping root and reference in same transaction
Btrfs: prohibit a operation of changing acl's mask when noacl mount option used
Btrfs: should add a permission check for setfacl
Btrfs: btrfs_lookup_dir_item() can return ERR_PTR
Btrfs: btrfs_read_fs_root_no_name() returns ERR_PTRs
Btrfs: unwind after btrfs_start_transaction() errors
Btrfs: btrfs_iget() returns ERR_PTR
Btrfs: handle kzalloc() failure in open_ctree()
Btrfs: handle error returns from btrfs_lookup_dir_item()
Btrfs: Fix BUG_ON for fs converted from extN
Btrfs: Fix null dereference in relocation.c
Btrfs: fix remap_file_pages error
Btrfs: uninitialized data is check_path_shared()
Btrfs: fix fallocate regression
Btrfs: fix loop device on top of btrfs
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 8d432cd..2222d16 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -60,6 +60,8 @@
size = __btrfs_getxattr(inode, name, value, size);
if (size > 0) {
acl = posix_acl_from_xattr(value, size);
+ if (IS_ERR(acl))
+ return acl;
set_cached_acl(inode, type, acl);
}
kfree(value);
@@ -160,6 +162,12 @@
int ret;
struct posix_acl *acl = NULL;
+ if (!is_owner_or_cap(dentry->d_inode))
+ return -EPERM;
+
+ if (!IS_POSIXACL(dentry->d_inode))
+ return -EOPNOTSUPP;
+
if (value) {
acl = posix_acl_from_xattr(value, size);
if (acl == NULL) {
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index f3b287c..34f7c37 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1941,8 +1941,11 @@
btrfs_level_size(tree_root,
btrfs_super_log_root_level(disk_super));
- log_tree_root = kzalloc(sizeof(struct btrfs_root),
- GFP_NOFS);
+ log_tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
+ if (!log_tree_root) {
+ err = -ENOMEM;
+ goto fail_trans_kthread;
+ }
__setup_root(nodesize, leafsize, sectorsize, stripesize,
log_tree_root, fs_info, BTRFS_TREE_LOG_OBJECTID);
@@ -1982,6 +1985,10 @@
fs_info->fs_root = btrfs_read_fs_root_no_name(fs_info, &location);
if (!fs_info->fs_root)
goto fail_trans_kthread;
+ if (IS_ERR(fs_info->fs_root)) {
+ err = PTR_ERR(fs_info->fs_root);
+ goto fail_trans_kthread;
+ }
if (!(sb->s_flags & MS_RDONLY)) {
down_read(&fs_info->cleanup_work_sem);
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index b9080d7..32d0940 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4360,7 +4360,8 @@
block_rsv = get_block_rsv(trans, root);
cache = btrfs_lookup_block_group(root->fs_info, buf->start);
- BUG_ON(block_rsv->space_info != cache->space_info);
+ if (block_rsv->space_info != cache->space_info)
+ goto out;
if (btrfs_header_generation(buf) == trans->transid) {
if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) {
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 787b50a..e354c33 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1140,7 +1140,7 @@
/*
* ok we haven't committed the transaction yet, lets do a commit
*/
- if (file && file->private_data)
+ if (file->private_data)
btrfs_ioctl_trans_end(file);
trans = btrfs_start_transaction(root, 0);
@@ -1190,14 +1190,22 @@
static int btrfs_file_mmap(struct file *filp, struct vm_area_struct *vma)
{
- vma->vm_ops = &btrfs_file_vm_ops;
+ struct address_space *mapping = filp->f_mapping;
+
+ if (!mapping->a_ops->readpage)
+ return -ENOEXEC;
+
file_accessed(filp);
+ vma->vm_ops = &btrfs_file_vm_ops;
+ vma->vm_flags |= VM_CAN_NONLINEAR;
+
return 0;
}
const struct file_operations btrfs_file_operations = {
.llseek = generic_file_llseek,
.read = do_sync_read,
+ .write = do_sync_write,
.aio_read = generic_file_aio_read,
.splice_read = generic_file_splice_read,
.aio_write = btrfs_file_aio_write,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index fa6ccc1..1bff92a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2673,7 +2673,7 @@
struct extent_buffer *eb;
int level;
int ret;
- u64 refs;
+ u64 refs = 1;
for (level = 0; level < BTRFS_MAX_LEVEL; level++) {
if (!path->nodes[level])
@@ -6884,7 +6884,7 @@
if (em->block_start == EXTENT_MAP_HOLE ||
(cur_offset >= inode->i_size &&
!test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
- ret = btrfs_prealloc_file_range(inode, 0, cur_offset,
+ ret = btrfs_prealloc_file_range(inode, mode, cur_offset,
last_byte - cur_offset,
1 << inode->i_blkbits,
offset + len,
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 4cdb98c..4dbaf89 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1280,7 +1280,7 @@
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {
err = PTR_ERR(trans);
- goto out;
+ goto out_up_write;
}
trans->block_rsv = &root->fs_info->global_block_rsv;
@@ -1845,7 +1845,7 @@
dir_id = btrfs_super_root_dir(&root->fs_info->super_copy);
di = btrfs_lookup_dir_item(trans, root->fs_info->tree_root, path,
dir_id, "default", 7, 1);
- if (!di) {
+ if (IS_ERR_OR_NULL(di)) {
btrfs_free_path(path);
btrfs_end_transaction(trans, root);
printk(KERN_ERR "Umm, you don't have the default dir item, "
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 05d41e5..b37d723 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -784,16 +784,17 @@
struct btrfs_extent_ref_v0 *ref0;
ref0 = btrfs_item_ptr(eb, path1->slots[0],
struct btrfs_extent_ref_v0);
- root = find_tree_root(rc, eb, ref0);
- if (!root->ref_cows)
- cur->cowonly = 1;
if (key.objectid == key.offset) {
+ root = find_tree_root(rc, eb, ref0);
if (root && !should_ignore_root(root))
cur->root = root;
else
list_add(&cur->list, &useless);
break;
}
+ if (is_cowonly_root(btrfs_ref_root_v0(eb,
+ ref0)))
+ cur->cowonly = 1;
}
#else
BUG_ON(key.type == BTRFS_EXTENT_REF_V0_KEY);
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index b91ccd9..2d958be 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -330,7 +330,6 @@
{
struct btrfs_path *path;
int ret;
- u32 refs;
struct btrfs_root_item *ri;
struct extent_buffer *leaf;
@@ -344,8 +343,6 @@
leaf = path->nodes[0];
ri = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_item);
- refs = btrfs_disk_root_refs(leaf, ri);
- BUG_ON(refs != 0);
ret = btrfs_del_item(trans, root, path);
out:
btrfs_free_path(path);
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index d34b2df..f2393b3 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -360,6 +360,8 @@
*/
dir_id = btrfs_super_root_dir(&root->fs_info->super_copy);
di = btrfs_lookup_dir_item(NULL, root, path, dir_id, "default", 7, 0);
+ if (IS_ERR(di))
+ return ERR_CAST(di);
if (!di) {
/*
* Ok the default dir item isn't there. This is weird since
@@ -390,8 +392,8 @@
location.offset = 0;
inode = btrfs_iget(sb, &location, new_root, &new);
- if (!inode)
- return ERR_PTR(-ENOMEM);
+ if (IS_ERR(inode))
+ return ERR_CAST(inode);
/*
* If we're just mounting the root most subvol put the inode and return