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Fix autoconf detection of super_setup_bdi_name

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The previous autoconf test for the presence of super_setup_bdi_name()
uses an invocation with an incorrect type signature, producing a
warning by the compiler when the test is run. This gets elevated to an
error when compiling with -Werror=format-security, causing autoconf to
falsely infer super_setup_bdi_name() is not present. This updates the
testing code to match the invocation used in
include/linux/vfs_compat.h.

Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Justin Bedo <cu@cua0.org>
Closes #6398
This commit is contained in:
Justin Bedő 2017-07-26 03:30:20 +10:00 committed by Brian Behlendorf
parent e889f0f520
commit f269060a24
1 changed files with 2 additions and 1 deletions
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3
config/kernel-bdi.m4
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@ -11,8 +11,9 @@ AC_DEFUN([ZFS_AC_KERNEL_BDI], [
struct super_block sb; struct super_block sb;
], [ ], [
char *name = "bdi"; char *name = "bdi";
atomic_long_t zfs_bdi_seq;
int error __attribute__((unused)) = int error __attribute__((unused)) =
super_setup_bdi_name(&sb, name); super_setup_bdi_name(&sb, "%.28s-%ld", name, atomic_long_inc_return(&zfs_bdi_seq));
], [super_setup_bdi_name], [fs/super.c], [ ], [super_setup_bdi_name], [fs/super.c], [
AC_MSG_RESULT(yes) AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1, AC_DEFINE(HAVE_SUPER_SETUP_BDI_NAME, 1,