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authorJosef Bacik <josef@redhat.com>2011-05-27 12:06:11 -0400
committerJosef Bacik <josef@redhat.com>2011-07-11 09:58:45 -0400
commitfa09200b8334f9a6af3f656edae924a98d85630f (patch)
tree9213ac48212f70d86fb60834beb464d68be332ba /fs/btrfs/dir-item.c
parent149e2d76b4886c4c7ff5e077646a8ba3563c8026 (diff)
downloadop-kernel-dev-fa09200b8334f9a6af3f656edae924a98d85630f.zip
op-kernel-dev-fa09200b8334f9a6af3f656edae924a98d85630f.tar.gz
Btrfs: try to only do one btrfs_search_slot in do_setxattr
I've been watching how many btrfs_search_slot()'s we do and I noticed that when we create a file with selinux enabled we were doing 2 each time we initialize the security context. That's because we lookup the xattr first so we can delete it if we're setting a new value to an existing xattr. But in the create case we don't have any xattrs, so it is completely useless to have the extra lookup. So re-arrange things so that we only lookup first if we specifically have XATTR_REPLACE. That way in the basic case we only do 1 search, and in the more complicated case we do the normal 2 lookups. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/dir-item.c')
-rw-r--r--fs/btrfs/dir-item.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index 685f259..c360a84 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -89,13 +89,8 @@ int btrfs_insert_xattr_item(struct btrfs_trans_handle *trans,
data_size = sizeof(*dir_item) + name_len + data_len;
dir_item = insert_with_overflow(trans, root, path, &key, data_size,
name, name_len);
- /*
- * FIXME: at some point we should handle xattr's that are larger than
- * what we can fit in our leaf. We set location to NULL b/c we arent
- * pointing at anything else, that will change if we store the xattr
- * data in a separate inode.
- */
- BUG_ON(IS_ERR(dir_item));
+ if (IS_ERR(dir_item))
+ return PTR_ERR(dir_item);
memset(&location, 0, sizeof(location));
leaf = path->nodes[0];
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