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

Btrfs: start of support for many FS volumes

Browse Source 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-06 15:37:36 -04:00
committed by David Woodhouse
parent 3eb0314dc1
commit d6e4a428eb
9 changed files with 242 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
fs/btrfs/inode-item.c
View File

@ -26,15 +26,27 @@ int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
}
int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, u64 objectid, int mod)
*root, struct btrfs_path *path,
struct btrfs_key *location, int mod)
{
struct btrfs_key key;
int ins_len = mod < 0 ? -1 : 0;
int cow = mod != 0;
int ret;
int slot;
struct btrfs_leaf *leaf;
struct btrfs_key found_key;
key.objectid = objectid;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
key.offset = 0;
return btrfs_search_slot(trans, root, &key, path, ins_len, cow);
ret = btrfs_search_slot(trans, root, location, path, ins_len, cow);
if (ret > 0 && btrfs_key_type(location) == BTRFS_ROOT_ITEM_KEY &&
location->offset == (u64)-1 && path->slots[0] != 0) {
slot = path->slots[0] - 1;
leaf = btrfs_buffer_leaf(path->nodes[0]);
btrfs_disk_key_to_cpu(&found_key, &leaf->items[slot].key);
if (found_key.objectid == location->objectid &&
btrfs_key_type(&found_key) == btrfs_key_type(location)) {
path->slots[0]--;
return 0;
}
}
return ret;
}