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| author | Chris Mason <chris.mason@oracle.com> | 2008-06-25 16:01:30 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:03 -0400 |
| commit | a213501153fd66e2359e091b1612841305ba6551 (patch) | |
| tree | 1f4c316c9d3cad0eb6d9be14cb0e67e46e815dce /fs/btrfs/inode-map.c | |
| parent | 925baeddc5b0764a53f2214a1253251bab0e0324 (diff) | |
Btrfs: Replace the big fs_mutex with a collection of other locks
Extent alloctions are still protected by a large alloc_mutex.
Objectid allocations are covered by a objectid mutex
Other btree operations are protected by a lock on individual btree nodes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/inode-map.c')
| -rw-r--r-- | fs/btrfs/inode-map.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index a0925eabdaa2..298346ae1481 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -69,6 +69,12 @@ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, struct btrfs_key search_key; u64 search_start = dirid; + mutex_lock(&root->objectid_mutex); + if (root->last_inode_alloc) { + *objectid = ++root->last_inode_alloc; + mutex_unlock(&root->objectid_mutex); + return 0; + } path = btrfs_alloc_path(); BUG_ON(!path); search_start = root->last_inode_alloc; @@ -124,9 +130,11 @@ found: btrfs_release_path(root, path); btrfs_free_path(path); BUG_ON(*objectid < search_start); + mutex_unlock(&root->objectid_mutex); return 0; error: btrfs_release_path(root, path); btrfs_free_path(path); + mutex_unlock(&root->objectid_mutex); return ret; } |