orangefs: Only compare attributes specified in orangefs_inode_getattr.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>

diff --git a/fs/orangefs/orangefs-utils.c b/fs/orangefs/orangefs-utils.c
index 6cf29a4..fa3ed8a 100644 (file)
--- a/fs/orangefs/orangefs-utils.c
+++ b/fs/orangefs/orangefs-utils.c
@@ -355,26 +355,37 @@ static inline int copy_attributes_from_inode(struct inode *inode,
 
 static int compare_attributes_to_inode(struct inode *inode,
                                       struct ORANGEFS_sys_attr_s *attrs,
-                                      char *symname)
+                                      char *symname,
+                                      int mask)
 {
        struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
        loff_t inode_size, rounded_up_size;
 
+       /* Much of what happens below relies on the type being around. */
+       if (!(mask & ORANGEFS_ATTR_SYS_TYPE))
+               return 0;
+
+       if (attrs->objtype == ORANGEFS_TYPE_METAFILE &&
+           inode->i_flags != orangefs_inode_flags(attrs))
+               return 0;
+
        /* Compare file size. */
 
        switch (attrs->objtype) {
        case ORANGEFS_TYPE_METAFILE:
-               if(inode->i_flags != orangefs_inode_flags(attrs))
-                       return 0;
-               inode_size = attrs->size;
-               rounded_up_size = inode_size + (4096 - (inode_size % 4096));
-               if (inode->i_bytes != inode_size ||
-                   inode->i_blocks != rounded_up_size/512)
-                       return 0;
+               if (mask & ORANGEFS_ATTR_SYS_SIZE) {
+                       inode_size = attrs->size;
+                       rounded_up_size = inode_size +
+                           (4096 - (inode_size % 4096));
+                       if (inode->i_bytes != inode_size ||
+                           inode->i_blocks != rounded_up_size/512)
+                               return 0;
+               }
                break;
        case ORANGEFS_TYPE_SYMLINK:
-               if (symname && strlen(symname) != inode->i_size)
-                       return 0;
+               if (mask & ORANGEFS_ATTR_SYS_SIZE)
+                       if (symname && strlen(symname) != inode->i_size)
+                               return 0;
                break;
        default:
                if (inode->i_size != PAGE_CACHE_SIZE &&
@@ -384,17 +395,28 @@ static int compare_attributes_to_inode(struct inode *inode,
 
        /* Compare general attributes. */
 
-       if (!uid_eq(inode->i_uid, make_kuid(&init_user_ns, attrs->owner)) ||
-           !gid_eq(inode->i_gid, make_kgid(&init_user_ns, attrs->group)) ||
-           inode->i_atime.tv_sec != attrs->atime ||
-           inode->i_mtime.tv_sec != attrs->mtime ||
-           inode->i_ctime.tv_sec != attrs->ctime ||
-           inode->i_atime.tv_nsec != 0 ||
+       if (mask & ORANGEFS_ATTR_SYS_UID &&
+           !uid_eq(inode->i_uid, make_kuid(&init_user_ns, attrs->owner)))
+               return 0;
+       if (mask & ORANGEFS_ATTR_SYS_GID &&
+           !gid_eq(inode->i_gid, make_kgid(&init_user_ns, attrs->group)))
+               return 0;
+       if (mask & ORANGEFS_ATTR_SYS_ATIME &&
+           inode->i_atime.tv_sec != attrs->atime)
+               return 0;
+       if (mask & ORANGEFS_ATTR_SYS_MTIME &&
+           inode->i_atime.tv_sec != attrs->mtime)
+               return 0;
+       if (mask & ORANGEFS_ATTR_SYS_CTIME &&
+           inode->i_atime.tv_sec != attrs->ctime)
+               return 0;
+       if (inode->i_atime.tv_nsec != 0 ||
            inode->i_mtime.tv_nsec != 0 ||
            inode->i_ctime.tv_nsec != 0)
                return 0;
 
-       if ((inode->i_mode & ~(S_ISVTX|S_IFREG|S_IFDIR|S_IFLNK)) !=
+       if (mask & ORANGEFS_ATTR_SYS_PERM &&
+           (inode->i_mode & ~(S_ISVTX|S_IFREG|S_IFDIR|S_IFLNK)) !=
            orangefs_inode_perms(attrs))
                return 0;
 
@@ -418,7 +440,8 @@ static int compare_attributes_to_inode(struct inode *inode,
        case ORANGEFS_TYPE_SYMLINK:
                if (!(inode->i_mode & S_IFLNK))
                        return 0;
-               if (orangefs_inode && symname)
+               if (orangefs_inode && symname &&
+                   mask & ORANGEFS_ATTR_SYS_LNK_TARGET)
                        if (strcmp(orangefs_inode->link_target, symname))
                                return 0;
                break;
@@ -462,7 +485,8 @@ int orangefs_inode_getattr(struct inode *inode, __u32 getattr_mask, int check)
        if (check) {
                ret = compare_attributes_to_inode(inode,
                    &new_op->downcall.resp.getattr.attributes,
-                   new_op->downcall.resp.getattr.link_target);
+                   new_op->downcall.resp.getattr.link_target,
+                   getattr_mask);
 
                if (new_op->downcall.resp.getattr.attributes.objtype ==
                    ORANGEFS_TYPE_METAFILE) {