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Linux 5.2 compat: Remove config/kernel-set-fs-pwd.m4 

This failed on 5.2-rc1 with "error: unknown" message, for set_fs_pwd()
not being visible in both const and non-const tests.

This is caused by torvalds/linux@83da1bed86. It's configurable,
but we would want to be able to compile with default kbuild setting.

set_fs_pwd() has never been exported with exception of some distro
kernels, and set_fs_pwd() wasn't used in ZoL to begin with. The test
result was used for a spl function vn_set_fs_pwd().

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@osnexus.com>
Closes #8777
This commit is contained in:
Tomohiro Kusumi 2019-05-26 05:28:56 +09:00 committed by Brian Behlendorf
parent c3e5907fdb
commit 4bb17ebfe2
3 changed files with 0 additions and 44 deletions
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39
config/kernel-set-fs-pwd.m4
View File

@ -1,39 +0,0 @@
dnl #
dnl # 3.9 API change
dnl # set_fs_pwd takes const struct path *
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SET_FS_PWD_WITH_CONST],
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Werror"
[AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *])
ZFS_LINUX_TRY_COMPILE([
#include <linux/spinlock.h>
#include <linux/fs_struct.h>
#include <linux/path.h>
void (*const set_fs_pwd_func)
(struct fs_struct *, const struct path *)
= set_fs_pwd;
],[
return 0;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1,
[set_fs_pwd() needs const path *])
],[
ZFS_LINUX_TRY_COMPILE([
#include <linux/spinlock.h>
#include <linux/fs_struct.h>
#include <linux/path.h>
void (*const set_fs_pwd_func)
(struct fs_struct *, struct path *)
= set_fs_pwd;
],[
return 0;
],[
AC_MSG_RESULT(no)
],[
AC_MSG_ERROR(unknown)
])
])
EXTRA_KCFLAGS="$tmp_flags"
])

1
config/kernel.m4
View File

@ -11,7 +11,6 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_CONFIG
ZFS_AC_KERNEL_CTL_NAME
ZFS_AC_KERNEL_PDE_DATA
ZFS_AC_KERNEL_SET_FS_PWD_WITH_CONST
ZFS_AC_KERNEL_2ARGS_VFS_FSYNC
ZFS_AC_KERNEL_FS_STRUCT_SPINLOCK
ZFS_AC_KERNEL_KUIDGID_T

4
module/spl/spl-vnode.c
View File

@ -643,11 +643,7 @@ EXPORT_SYMBOL(areleasef);
static void
#ifdef HAVE_SET_FS_PWD_WITH_CONST
vn_set_fs_pwd(struct fs_struct *fs, const struct path *path)
#else
vn_set_fs_pwd(struct fs_struct *fs, struct path *path)
#endif /* HAVE_SET_FS_PWD_WITH_CONST */
{
struct path old_pwd;