diff options
| author | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2022-10-07 19:53:30 +0300 |
|---|---|---|
| committer | Konstantin Komarov <almaz.alexandrovich@paragon-software.com> | 2022-11-14 19:50:45 +0300 |
| commit | 2b108260ea2c9ec07651aea4911d7e2e6ab560f7 (patch) | |
| tree | 274d8a12e4f3ff85b6374af139bca861a2a287a0 /fs/ntfs3/inode.c | |
| parent | 07f4aa9dd245661414a2db0574bed9bc5736ccfd (diff) | |
| download | linux-2b108260ea2c9ec07651aea4911d7e2e6ab560f7.tar.xz | |
fs/ntfs3: atomic_open implementation
Added ntfs_atomic_open function.
Relaxed locking in ntfs_create_inode.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Diffstat (limited to 'fs/ntfs3/inode.c')
| -rw-r--r-- | fs/ntfs3/inode.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index 45a4ddc0bcdc..7e369d69d3f2 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -1184,6 +1184,18 @@ out: return ERR_PTR(err); } +/* + * ntfs_create_inode + * + * Helper function for: + * - ntfs_create + * - ntfs_mknod + * - ntfs_symlink + * - ntfs_mkdir + * - ntfs_atomic_open + * + * NOTE: if fnd != NULL (ntfs_atomic_open) then @dir is locked + */ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, struct inode *dir, struct dentry *dentry, const struct cpu_str *uni, umode_t mode, @@ -1213,7 +1225,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, struct REPARSE_DATA_BUFFER *rp = NULL; bool rp_inserted = false; - ni_lock_dir(dir_ni); + if (!fnd) + ni_lock_dir(dir_ni); dir_root = indx_get_root(&dir_ni->dir, dir_ni, NULL, NULL); if (!dir_root) { @@ -1583,7 +1596,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, goto out6; /* Unlock parent directory before ntfs_init_acl. */ - ni_unlock(dir_ni); + if (!fnd) + ni_unlock(dir_ni); inode->i_generation = le16_to_cpu(rec->seq); @@ -1643,7 +1657,8 @@ struct inode *ntfs_create_inode(struct user_namespace *mnt_userns, out7: /* Undo 'indx_insert_entry'. */ - ni_lock_dir(dir_ni); + if (!fnd) + ni_lock_dir(dir_ni); indx_delete_entry(&dir_ni->dir, dir_ni, new_de + 1, le16_to_cpu(new_de->key_size), sbi); /* ni_unlock(dir_ni); will be called later. */ @@ -1671,7 +1686,8 @@ out2: out1: if (err) { - ni_unlock(dir_ni); + if (!fnd) + ni_unlock(dir_ni); return ERR_PTR(err); } |