lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Btrfs: Fix i_blocks accounting

Browse Source 
Now that delayed allocation accounting works, i_blocks accounting is changed
to only modify i_blocks when extents inserted or removed.

The fillattr call is changed to include the delayed allocation byte count
in the i_blocks result.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-02-08 13:49:28 -05:00
parent a86c12c73d
commit 9069218d44
4 changed files with 50 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
fs/btrfs/inode.c
View File

@@ -134,6 +134,7 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end)
ret = btrfs_insert_file_extent(trans, root, inode->i_ino,
start, ins.objectid, ins.offset,
ins.offset);
inode->i_blocks += ins.offset >> 9;
btrfs_check_file(root, inode);
num_bytes -= cur_alloc_size;
alloc_hint = ins.objectid + ins.offset;
@@ -142,6 +143,7 @@ static int cow_file_range(struct inode *inode, u64 start, u64 end)
btrfs_drop_extent_cache(inode, orig_start,
orig_start + orig_num_bytes - 1);
btrfs_add_ordered_inode(inode);
btrfs_update_inode(trans, root, inode);
out:
btrfs_end_transaction(trans, root);
return ret;
@@ -265,6 +267,7 @@ int btrfs_set_bit_hook(struct inode *inode, u64 start, u64 end,
if (!(old & EXTENT_DELALLOC) && (bits & EXTENT_DELALLOC)) {
struct btrfs_root *root = BTRFS_I(inode)->root;
spin_lock(&root->fs_info->delalloc_lock);
BTRFS_I(inode)->delalloc_bytes += end - start + 1;
root->fs_info->delalloc_bytes += end - start + 1;
spin_unlock(&root->fs_info->delalloc_lock);
}
@@ -281,8 +284,10 @@ int btrfs_clear_bit_hook(struct inode *inode, u64 start, u64 end,
printk("warning: delalloc account %Lu %Lu\n",
end - start + 1, root->fs_info->delalloc_bytes);
root->fs_info->delalloc_bytes = 0;
BTRFS_I(inode)->delalloc_bytes = 0;
} else {
root->fs_info->delalloc_bytes -= end - start + 1;
BTRFS_I(inode)->delalloc_bytes -= end - start + 1;
}
spin_unlock(&root->fs_info->delalloc_lock);
}
@@ -833,32 +838,37 @@ search_again:
btrfs_set_file_extent_num_bytes(leaf, fi,
extent_num_bytes);
num_dec = (orig_num_bytes -
extent_num_bytes) >> 9;
if (extent_start != 0) {
inode->i_blocks -= num_dec;
}
extent_num_bytes);
if (extent_start != 0)
dec_i_blocks(inode, num_dec);
btrfs_mark_buffer_dirty(leaf);
} else {
extent_num_bytes =
btrfs_file_extent_disk_num_bytes(leaf,
fi);
/* FIXME blocksize != 4096 */
num_dec = btrfs_file_extent_num_bytes(leaf,
fi) >> 9;
num_dec = btrfs_file_extent_num_bytes(leaf, fi);
if (extent_start != 0) {
found_extent = 1;
inode->i_blocks -= num_dec;
dec_i_blocks(inode, num_dec);
}
root_gen = btrfs_header_generation(leaf);
root_owner = btrfs_header_owner(leaf);
}
} else if (extent_type == BTRFS_FILE_EXTENT_INLINE &&
!del_item) {
u32 newsize = inode->i_size - found_key.offset;
newsize = btrfs_file_extent_calc_inline_size(newsize);
ret = btrfs_truncate_item(trans, root, path,
newsize, 1);
BUG_ON(ret);
} else if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
if (!del_item) {
u32 newsize = inode->i_size - found_key.offset;
dec_i_blocks(inode, item_end + 1 -
found_key.offset - newsize);
newsize =
btrfs_file_extent_calc_inline_size(newsize);
ret = btrfs_truncate_item(trans, root, path,
newsize, 1);
BUG_ON(ret);
} else {
dec_i_blocks(inode, item_end + 1 -
found_key.offset);
}
}
delete:
if (del_item) {
@@ -1222,6 +1232,7 @@ static int btrfs_init_locked_inode(struct inode *inode, void *p)
struct btrfs_iget_args *args = p;
inode->i_ino = args->ino;
BTRFS_I(inode)->root = args->root;
BTRFS_I(inode)->delalloc_bytes = 0;
extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
extent_io_tree_init(&BTRFS_I(inode)->io_tree,
inode->i_mapping, GFP_NOFS);
@@ -1528,6 +1539,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
extent_io_tree_init(&BTRFS_I(inode)->io_tree,
inode->i_mapping, GFP_NOFS);
BTRFS_I(inode)->delalloc_bytes = 0;
BTRFS_I(inode)->root = root;
if (mode & S_IFDIR)
@@ -1746,6 +1758,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
extent_io_tree_init(&BTRFS_I(inode)->io_tree,
inode->i_mapping, GFP_NOFS);
BTRFS_I(inode)->delalloc_bytes = 0;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
}
dir->i_sb->s_dirt = 1;
@@ -2797,6 +2810,7 @@ static int btrfs_getattr(struct vfsmount *mnt,
struct inode *inode = dentry->d_inode;
generic_fillattr(inode, stat);
stat->blksize = PAGE_CACHE_SIZE;
stat->blocks = inode->i_blocks + (BTRFS_I(inode)->delalloc_bytes >> 9);
return 0;
}
@@ -2912,6 +2926,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
extent_map_tree_init(&BTRFS_I(inode)->extent_tree, GFP_NOFS);
extent_io_tree_init(&BTRFS_I(inode)->io_tree,
inode->i_mapping, GFP_NOFS);
BTRFS_I(inode)->delalloc_bytes = 0;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
}
dir->i_sb->s_dirt = 1;