samsung_sm8750/android_kernel_samsung_sm8750
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Btrfs: tweak the inode-map and free extent search starts on cold mount

Browse Source 
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-04 15:27:52 -04:00
committed by David Woodhouse
parent e8f05c4508
commit b1a4d96509
5 changed files with 42 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
fs/btrfs/inode-map.c
View File

@@ -22,17 +22,31 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
struct btrfs_key search_key;
u64 search_start = dirid;
if (fs_root->fs_info->last_inode_alloc_dirid == dirid)
search_start = fs_root->fs_info->last_inode_alloc;
search_start = max(search_start, BTRFS_FIRST_FREE_OBJECTID);
search_key.objectid = search_start;
search_key.flags = 0;
btrfs_set_key_type(&search_key, BTRFS_INODE_MAP_ITEM_KEY);
search_key.offset = 0;
path = btrfs_alloc_path();
BUG_ON(!path);
search_key.flags = 0;
btrfs_set_key_type(&search_key, BTRFS_INODE_MAP_ITEM_KEY);
search_start = fs_root->fs_info->last_inode_alloc;
if (search_start == 0) {
struct btrfs_disk_key *last_key;
btrfs_init_path(path);
search_key.objectid = (u64)-1;
search_key.offset = (u64)-1;
ret = btrfs_search_slot(trans, root, &search_key, path, 0, 0);
if (ret < 0)
goto error;
BUG_ON(ret == 0);
if (path->slots[0] > 0)
path->slots[0]--;
l = btrfs_buffer_leaf(path->nodes[0]);
last_key = &l->items[path->slots[0]].key;
search_start = btrfs_disk_key_objectid(last_key);
}
search_start = max(search_start, BTRFS_FIRST_FREE_OBJECTID);
search_key.objectid = search_start;
search_key.offset = 0;
btrfs_init_path(path);
start_found = 0;
ret = btrfs_search_slot(trans, root, &search_key, path, 0, 0);
@@ -79,7 +93,6 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans,
// FIXME -ENOSPC
found:
root->fs_info->last_inode_alloc = *objectid;
root->fs_info->last_inode_alloc_dirid = dirid;
btrfs_release_path(root, path);
btrfs_free_path(path);
BUG_ON(*objectid < search_start);