Use list_head in binfmt handling

Switch single-linked binfmt formats list to usual list_head's.  This leads
to one-liners in register_binfmt() and unregister_binfmt().  The downside
is one pointer more in struct linux_binfmt.  This is not a problem, since
the set of registered binfmts on typical box is very small -- (ELF +
something distro enabled for you).

Test-booted, played with executable .txt files, modprobe/rmmod binfmt_misc.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 10 insertions, 4 deletions

diff --git a/arch/mips/kernel/irixelf.c b/arch/mips/kernel/irixelf.c
index 8ef5cf4cc423..5a3fe43e3019 100644
--- a/arch/mips/kernel/irixelf.c
+++ b/arch/mips/kernel/irixelf.c
@@ -47,8 +47,11 @@ static int irix_core_dump(long signr, struct pt_regs * regs,
                           struct file *file);
 
 static struct linux_binfmt irix_format = {
-        NULL, THIS_MODULE, load_irix_binary, load_irix_library,
-        irix_core_dump, PAGE_SIZE
+        .module         = THIS_MODULE,
+        .load_binary    = load_irix_binary,
+        .load_shlib     = load_irix_library,
+        .core_dump      = irix_core_dump,
+        .min_coredump   = PAGE_SIZE,
 };
 
 /* Debugging routines. */
diff --git a/arch/sparc64/kernel/binfmt_aout32.c b/arch/sparc64/kernel/binfmt_aout32.c
index d208cc7804f2..c8acbeab49b4 100644
--- a/arch/sparc64/kernel/binfmt_aout32.c
+++ b/arch/sparc64/kernel/binfmt_aout32.c
@@ -38,8 +38,11 @@ static int load_aout32_library(struct file*);
 static int aout32_core_dump(long signr, struct pt_regs * regs, struct file *file);
 
 static struct linux_binfmt aout32_format = {
-        NULL, THIS_MODULE, load_aout32_binary, load_aout32_library, aout32_core_dump,
-        PAGE_SIZE
+        .module         = THIS_MODULE,
+        .load_binary    = load_aout32_binary,
+        .load_shlib     = load_aout32_library,
+        .core_dump      = aout32_core_dump,
+        .min_coredump   = PAGE_SIZE,
 };
 
 static void set_brk(unsigned long start, unsigned long end)