binfmt_misc: include what is used

The include list still reflects code that left this file years ago:
nothing here uses sched/mm.h, pagemap.h, namei.h, syscalls.h or
anything from fs/internal.h anymore, mount.h and the bm_fs_type
forward declaration lost their last user when the pinned bm_mnt
machinery was removed. Drop all of that and instead spell out the
headers the file actually relies on but so far pulled in
transitively: bitops, bits, bug, cleanup, cred, kstrtox, printk,
refcount, string and user_namespace. With that nothing needs the
kernel.h grab bag anymore, so it goes too, and the list is sorted
alphabetically.

Link: https://patch.msgid.link/20260710-work-binfmt_misc-locking-v3-23-a162f7cb58d6@kernel.org
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index c6d7ba4597379b23da1b8ac5611f16583c48de99..62dbf99ca667bff430501a652c0fad72bc350e04 100644 (file)
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -10,27 +10,29 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/sched/mm.h>
-#include <linux/magic.h>
 #include <linux/binfmts.h>
-#include <linux/slab.h>
+#include <linux/bitops.h>
+#include <linux/bits.h>
+#include <linux/bug.h>
+#include <linux/cleanup.h>
+#include <linux/cred.h>
 #include <linux/ctype.h>
-#include <linux/string_helpers.h>
 #include <linux/file.h>
-#include <linux/pagemap.h>
-#include <linux/namei.h>
-#include <linux/mount.h>
+#include <linux/fs.h>
+#include <linux/fs_context.h>
+#include <linux/init.h>
+#include <linux/kstrtox.h>
+#include <linux/magic.h>
+#include <linux/module.h>
+#include <linux/printk.h>
 #include <linux/rculist.h>
+#include <linux/refcount.h>
 #include <linux/seq_file.h>
-#include <linux/fs_context.h>
-#include <linux/syscalls.h>
-#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/string_helpers.h>
 #include <linux/uaccess.h>
-
-#include "internal.h"
+#include <linux/user_namespace.h>
 
 /* Entry status and match type bit numbers. */
 enum binfmt_misc_entry_bits {
@@ -62,8 +64,6 @@ struct binfmt_misc_entry {
        char buf[];                     /* register string, fields point in here */
 };
 
-static struct file_system_type bm_fs_type;
-
 /*
  * Max length of the register string.  Determined by:
  *  - 7 delimiters