[PATCH 5/5] fs/ntfs3: Refactoring lock in ntfs_init_acl

From: Konstantin Komarov
Date: Wed Sep 22 2021 - 12:20:58 EST


This is possible because of moving lock into ntfs_create_inode.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@xxxxxxxxxxxxxxxxxxxx>
---
fs/ntfs3/xattr.c | 55 ++++++++++++------------------------------------
1 file changed, 14 insertions(+), 41 deletions(-)

diff --git a/fs/ntfs3/xattr.c b/fs/ntfs3/xattr.c
index 59ec5e61a239..83bbee277e12 100644
--- a/fs/ntfs3/xattr.c
+++ b/fs/ntfs3/xattr.c
@@ -693,54 +693,27 @@ int ntfs_init_acl(struct user_namespace *mnt_userns, struct inode *inode,
struct posix_acl *default_acl, *acl;
int err;

- /*
- * TODO: Refactoring lock.
- * ni_lock(dir) ... -> posix_acl_create(dir,...) -> ntfs_get_acl -> ni_lock(dir)
- */
- inode->i_default_acl = NULL;
-
- default_acl = ntfs_get_acl_ex(mnt_userns, dir, ACL_TYPE_DEFAULT, 1);
-
- if (!default_acl || default_acl == ERR_PTR(-EOPNOTSUPP)) {
- inode->i_mode &= ~current_umask();
- err = 0;
- goto out;
- }
-
- if (IS_ERR(default_acl)) {
- err = PTR_ERR(default_acl);
- goto out;
- }
-
- acl = default_acl;
- err = __posix_acl_create(&acl, GFP_NOFS, &inode->i_mode);
- if (err < 0)
- goto out1;
- if (!err) {
- posix_acl_release(acl);
- acl = NULL;
- }
-
- if (!S_ISDIR(inode->i_mode)) {
- posix_acl_release(default_acl);
- default_acl = NULL;
- }
+ err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
+ if (err)
+ return err;

- if (default_acl)
+ if (default_acl) {
err = ntfs_set_acl_ex(mnt_userns, inode, default_acl,
ACL_TYPE_DEFAULT, 1);
+ posix_acl_release(default_acl);
+ } else {
+ inode->i_default_acl = NULL;
+ }

if (!acl)
inode->i_acl = NULL;
- else if (!err)
- err = ntfs_set_acl_ex(mnt_userns, inode, acl, ACL_TYPE_ACCESS,
- 1);
-
- posix_acl_release(acl);
-out1:
- posix_acl_release(default_acl);
+ else {
+ if (!err)
+ err = ntfs_set_acl_ex(mnt_userns, inode, acl,
+ ACL_TYPE_ACCESS, 1);
+ posix_acl_release(acl);
+ }

-out:
return err;
}
#endif
--
2.33.0