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Remove atomic64_xchg() wrappers

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The atomic64_xchg() and atomic64_cmpxchg() functions have been
available since Linux 2.6.24.  There is no longer a need to
maintain this compatibility code.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2014-10-01 16:31:11 -04:00
parent 82f2f1a3af
commit ff0582cb39
2 changed files with 0 additions and 48 deletions
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config/spl-build.m4
-40
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@@ -23,8 +23,6 @@ AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
SPL_AC_DEBUG_KMEM_TRACKING
SPL_AC_TEST_MODULE
SPL_AC_ATOMIC_SPINLOCK
SPL_AC_TYPE_ATOMIC64_CMPXCHG
SPL_AC_TYPE_ATOMIC64_XCHG
SPL_AC_TYPE_UINTPTR_T
SPL_AC_SHRINKER_CALLBACK
SPL_AC_CTL_NAME
@@ -808,44 +806,6 @@ AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [
AC_MSG_RESULT([$have_atomic64_t])
])
dnl #
dnl # 2.6.24 API change,
dnl # check if atomic64_cmpxchg is defined
dnl #
AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG],
[AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg])
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
atomic64_cmpxchg((atomic64_t *)NULL, 0, 0);
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1,
[kernel defines atomic64_cmpxchg])
],[
AC_MSG_RESULT([no])
])
])
dnl #
dnl # 2.6.24 API change,
dnl # check if atomic64_xchg is defined
dnl #
AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG],
[AC_MSG_CHECKING([whether kernel defines atomic64_xchg])
SPL_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
atomic64_xchg((atomic64_t *)NULL, 0);
],[
AC_MSG_RESULT([yes])
AC_DEFINE(HAVE_ATOMIC64_XCHG, 1,
[kernel defines atomic64_xchg])
],[
AC_MSG_RESULT([no])
])
])
dnl #
dnl # 2.6.24 API change,
dnl # check if uintptr_t typedef is defined