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Linux: Rework statfs super block operations configure test

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The configure test to detect if the statfs super block operation
needs a dentry argument is based on vfs_statfs, and assumes that
its signature matches the one of the operation.  In 2.6.36 this is
no longer true and the test fails.

Rework the test to actually test the operation we're interested in.

This change is required for 2.6.36.

Reviewed-on: http://gerrit.openafs.org/2545
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

(cherry-picked from commit 08552ad8a9)

Reviewed-on: http://gerrit.openafs.org/2553
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit b8b708fc41)
Change-Id: Ib40de2018ecec5e3c82d8fa829364c31d29526b4
Reviewed-on: http://gerrit.openafs.org/3516
Reviewed-by: Simon Wilkinson <sxw@inf.ed.ac.uk>
This commit is contained in:
Marc Dionne 2010-08-11 19:28:53 -04:00 committed by Derrick Brashear
parent 781245e838
commit 054d1c6535
1 changed files with 4 additions and 3 deletions
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7
src/cf/linux-test4.m4
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@ -722,9 +722,10 @@ AC_DEFUN([LINUX_STATFS_TAKES_DENTRY], [
AC_TRY_KBUILD(
[#include <linux/fs.h>
#include <linux/statfs.h>],
[
extern int vfs_statfs(struct dentry *, struct kstatfs *);
],
[struct super_block _sb;
struct dentry _dentry;
struct kstatfs _kstatfs;
(void)_sb.s_op->statfs(&_dentry, &_kstatfs);],
ac_cv_linux_statfs_takes_dentry=yes,
ac_cv_linux_statfs_takes_dentry=no)])
AC_MSG_RESULT($ac_cv_linux_statfs_takes_dentry)])