ERROR: space required after that ',' (ctx:VxV)
#49: FILE: fs/configfs/dir.c:405:
+			__simple_rmdir(d_inode(parent),d);
 			                              ^

WARNING: Prefer using '"%s...", __func__' to using 'remove_dir', this function's name, in a string
#52: FILE: fs/configfs/dir.c:408:
+			pr_warn("remove_dir (%pd): attributes remain", d);

CHECK: extern prototypes should be avoided in .h files
#137: FILE: include/linux/fs.h:3624:
+extern void __simple_unlink(struct inode *, struct dentry *);

WARNING: function definition argument 'struct inode *' should also have an identifier name
#137: FILE: include/linux/fs.h:3624:
+extern void __simple_unlink(struct inode *, struct dentry *);

WARNING: function definition argument 'struct dentry *' should also have an identifier name
#137: FILE: include/linux/fs.h:3624:
+extern void __simple_unlink(struct inode *, struct dentry *);

CHECK: extern prototypes should be avoided in .h files
#138: FILE: include/linux/fs.h:3625:
+extern void __simple_rmdir(struct inode *, struct dentry *);

WARNING: function definition argument 'struct inode *' should also have an identifier name
#138: FILE: include/linux/fs.h:3625:
+extern void __simple_rmdir(struct inode *, struct dentry *);

WARNING: function definition argument 'struct dentry *' should also have an identifier name
#138: FILE: include/linux/fs.h:3625:
+extern void __simple_rmdir(struct inode *, struct dentry *);

total: 1 errors, 5 warnings, 2 checks, 98 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 75bc7edd9590 ("d_make_discardable(): warn if given a non-persistent dentry") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.