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Btrfs: support for items bigger than 1/2 the blocksize

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-04 14:08:15 -04:00
committed by David Woodhouse
parent df24a2b9c9
commit d4dbff953e
2 changed files with 110 additions and 38 deletions
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16
fs/btrfs/super.c
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@@ -136,8 +136,11 @@ static int btrfs_unlink_trans(struct btrfs_trans_handle *trans,
err:
btrfs_release_path(root, path);
btrfs_free_path(path);
if (ret == 0)
if (ret == 0) {
inode_dec_link_count(dentry->d_inode);
dir->i_size -= name_len;
mark_inode_dirty(dir);
}
return ret;
}
@@ -290,6 +293,10 @@ static int btrfs_truncate_in_trans(struct btrfs_trans_handle *trans,
key.objectid = inode->i_ino;
key.offset = (u64)-1;
key.flags = 0;
/*
* use BTRFS_CSUM_ITEM_KEY because it is larger than inline keys
* or extent data
*/
btrfs_set_key_type(&key, BTRFS_CSUM_ITEM_KEY);
while(1) {
btrfs_init_path(path);
@@ -306,6 +313,7 @@ static int btrfs_truncate_in_trans(struct btrfs_trans_handle *trans,
if (btrfs_disk_key_objectid(found_key) != inode->i_ino)
break;
if (btrfs_disk_key_type(found_key) != BTRFS_CSUM_ITEM_KEY &&
btrfs_disk_key_type(found_key) != BTRFS_INLINE_DATA_KEY &&
btrfs_disk_key_type(found_key) != BTRFS_EXTENT_DATA_KEY)
break;
if (btrfs_disk_key_offset(found_key) < inode->i_size)
@@ -1036,7 +1044,7 @@ static void btrfs_truncate(struct inode *inode)
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
nobh_truncate_page(inode->i_mapping, inode->i_size);
// nobh_truncate_page(inode->i_mapping, inode->i_size);
/* FIXME, add redo link to tree so we don't leak on crash */
mutex_lock(&root->fs_info->fs_mutex);
@@ -1309,7 +1317,9 @@ again:
}
insert:
btrfs_release_path(root, path);
copy_size = min(write_bytes, (size_t)512);
copy_size = min(write_bytes,
(size_t)BTRFS_LEAF_DATA_SIZE(root) -
sizeof(struct btrfs_item) * 4);
ret = btrfs_insert_empty_item(trans, root, path, &key, copy_size);
BUG_ON(ret);
dst = btrfs_item_ptr(btrfs_buffer_leaf(path->nodes[0]),