struct btrfs_trans_handle *trans;
unsigned int flags, oldflags;
int ret;
+ u64 ip_oldflags;
+ unsigned int i_oldflags;
if (btrfs_root_readonly(root))
return -EROFS;
mutex_lock(&inode->i_mutex);
+ ip_oldflags = ip->flags;
+ i_oldflags = inode->i_flags;
+
flags = btrfs_mask_flags(inode->i_mode, flags);
oldflags = btrfs_flags_to_ioctl(ip->flags);
if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) {
ip->flags &= ~(BTRFS_INODE_COMPRESS | BTRFS_INODE_NOCOMPRESS);
}
- trans = btrfs_join_transaction(root);
- BUG_ON(IS_ERR(trans));
+ trans = btrfs_start_transaction(root, 1);
+ if (IS_ERR(trans)) {
+ ret = PTR_ERR(trans);
+ goto out_drop;
+ }
btrfs_update_iflags(inode);
inode->i_ctime = CURRENT_TIME;
ret = btrfs_update_inode(trans, root, inode);
- BUG_ON(ret);
btrfs_end_transaction(trans, root);
+ out_drop:
+ if (ret) {
+ ip->flags = ip_oldflags;
+ inode->i_flags = i_oldflags;
+ }
mnt_drop_write(file->f_path.mnt);
-
- ret = 0;
out_unlock:
mutex_unlock(&inode->i_mutex);
return ret;
return PTR_ERR(trans);
leaf = btrfs_alloc_free_block(trans, root, root->leafsize,
- 0, objectid, NULL, 0, 0, 0);
+ 0, objectid, NULL, 0, 0, 0, 0);
if (IS_ERR(leaf)) {
ret = PTR_ERR(leaf);
goto fail;
int i_done;
struct btrfs_ordered_extent *ordered;
struct extent_state *cached_state = NULL;
+ struct extent_io_tree *tree;
gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping);
if (isize == 0)
return 0;
file_end = (isize - 1) >> PAGE_CACHE_SHIFT;
- mutex_lock(&inode->i_mutex);
ret = btrfs_delalloc_reserve_space(inode,
num_pages << PAGE_CACHE_SHIFT);
- mutex_unlock(&inode->i_mutex);
if (ret)
return ret;
-again:
- ret = 0;
i_done = 0;
+ tree = &BTRFS_I(inode)->io_tree;
/* step one, lock all the pages */
for (i = 0; i < num_pages; i++) {
struct page *page;
+again:
page = find_or_create_page(inode->i_mapping,
- start_index + i, mask);
+ start_index + i, mask);
if (!page)
break;
+ page_start = page_offset(page);
+ page_end = page_start + PAGE_CACHE_SIZE - 1;
+ while (1) {
+ lock_extent(tree, page_start, page_end, GFP_NOFS);
+ ordered = btrfs_lookup_ordered_extent(inode,
+ page_start);
+ unlock_extent(tree, page_start, page_end, GFP_NOFS);
+ if (!ordered)
+ break;
+
+ unlock_page(page);
+ btrfs_start_ordered_extent(inode, ordered, 1);
+ btrfs_put_ordered_extent(ordered);
+ lock_page(page);
+ }
+
if (!PageUptodate(page)) {
btrfs_readpage(NULL, page);
lock_page(page);
break;
}
}
+
isize = i_size_read(inode);
file_end = (isize - 1) >> PAGE_CACHE_SHIFT;
- if (!isize || page->index > file_end ||
- page->mapping != inode->i_mapping) {
+ if (!isize || page->index > file_end) {
/* whoops, we blew past eof, skip this page */
unlock_page(page);
page_cache_release(page);
break;
}
+
+ if (page->mapping != inode->i_mapping) {
+ unlock_page(page);
+ page_cache_release(page);
+ goto again;
+ }
+
pages[i] = page;
i_done++;
}
lock_extent_bits(&BTRFS_I(inode)->io_tree,
page_start, page_end - 1, 0, &cached_state,
GFP_NOFS);
- ordered = btrfs_lookup_first_ordered_extent(inode, page_end - 1);
- if (ordered &&
- ordered->file_offset + ordered->len > page_start &&
- ordered->file_offset < page_end) {
- btrfs_put_ordered_extent(ordered);
- unlock_extent_cached(&BTRFS_I(inode)->io_tree,
- page_start, page_end - 1,
- &cached_state, GFP_NOFS);
- for (i = 0; i < i_done; i++) {
- unlock_page(pages[i]);
- page_cache_release(pages[i]);
- }
- btrfs_wait_ordered_range(inode, page_start,
- page_end - page_start);
- goto again;
- }
- if (ordered)
- btrfs_put_ordered_extent(ordered);
-
clear_extent_bit(&BTRFS_I(inode)->io_tree, page_start,
page_end - 1, EXTENT_DIRTY | EXTENT_DELALLOC |
EXTENT_DO_ACCOUNTING, 0, 0, &cached_state,
i = range->start >> PAGE_CACHE_SHIFT;
}
if (!max_to_defrag)
- max_to_defrag = last_index;
+ max_to_defrag = last_index + 1;
/*
* make writeback starts from i, so the defrag range can be
goto out;
}
+ if (name[0] == '.' &&
+ (namelen == 1 || (name[1] == '.' && namelen == 2))) {
+ ret = -EEXIST;
+ goto out;
+ }
+
if (subvol) {
ret = btrfs_mksubvol(&file->f_path, name, namelen,
NULL, transid, readonly);
disko, diskl, 0,
root->root_key.objectid,
btrfs_ino(inode),
- new_key.offset - datao);
+ new_key.offset - datao,
+ 0);
BUG_ON(ret);
}
} else if (type == BTRFS_FILE_EXTENT_INLINE) {
{
int ret = 0;
int size;
- u64 extent_offset;
+ u64 extent_item_pos;
struct btrfs_ioctl_logical_ino_args *loi;
struct btrfs_data_container *inodes = NULL;
struct btrfs_path *path = NULL;
}
ret = extent_from_logical(root->fs_info, loi->logical, path, &key);
+ btrfs_release_path(path);
if (ret & BTRFS_EXTENT_FLAG_TREE_BLOCK)
ret = -ENOENT;
if (ret < 0)
goto out;
- extent_offset = loi->logical - key.objectid;
- ret = iterate_extent_inodes(root->fs_info, path, key.objectid,
- extent_offset, build_ino_list, inodes);
+ extent_item_pos = loi->logical - key.objectid;
+ ret = iterate_extent_inodes(root->fs_info, key.objectid,
+ extent_item_pos, 0, build_ino_list,
+ inodes);
if (ret < 0)
goto out;
projects / linux-2.6-block.git / blobdiff