-#
-# LC_FUNC_HAVE_CAN_SLEEP_ARG
-#
-# 2.6.5 kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()
-#
-AC_DEFUN([LC_FUNC_HAVE_CAN_SLEEP_ARG],
-[AC_MSG_CHECKING([if kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
-],[
- int cansleep;
- struct file *file;
- struct file_lock *file_lock;
- flock_lock_file_wait(file, file_lock, cansleep);
-],[
- AC_DEFINE(HAVE_CAN_SLEEP_ARG, 1,
- [kernel has third arg can_sleep in fs/locks.c: flock_lock_file_wait()])
- AC_MSG_RESULT([yes])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_FUNC_F_OP_FLOCK
-#
-# rhel4.2 kernel has f_op->flock field
-#
-AC_DEFUN([LC_FUNC_F_OP_FLOCK],
-[AC_MSG_CHECKING([if struct file_operations has flock field])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
-],[
- struct file_operations ll_file_operations_flock;
- ll_file_operations_flock.flock = NULL;
-],[
- AC_DEFINE(HAVE_F_OP_FLOCK, 1,
- [struct file_operations has flock field])
- AC_MSG_RESULT([yes])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-AC_DEFUN([LC_QUOTA_READ],
-[AC_MSG_CHECKING([if kernel supports quota_read])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
-],[
- struct super_operations sp;
- void *i = (void *)sp.quota_read;
-],[
- AC_MSG_RESULT([yes])
- AC_DEFINE(KERNEL_SUPPORTS_QUOTA_READ, 1, [quota_read found])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_COOKIE_FOLLOW_LINK
-#
-# kernel 2.6.13+ ->follow_link returns a cookie
-#
-
-AC_DEFUN([LC_COOKIE_FOLLOW_LINK],
-[AC_MSG_CHECKING([if inode_operations->follow_link returns a cookie])
-LB_LINUX_TRY_COMPILE([
- #include <linux/fs.h>
- #include <linux/namei.h>
-],[
- struct dentry dentry;
- struct nameidata nd;
-
- dentry.d_inode->i_op->put_link(&dentry, &nd, NULL);
-],[
- AC_DEFINE(HAVE_COOKIE_FOLLOW_LINK, 1, [inode_operations->follow_link returns a cookie])
- AC_MSG_RESULT([yes])
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-#
-# LC_FUNC_RCU
-#
-# kernels prior than 2.6.0(?) have no RCU supported; in kernel 2.6.5(SUSE),
-# call_rcu takes three parameters.
-#
-AC_DEFUN([LC_FUNC_RCU],
-[AC_MSG_CHECKING([if kernel have RCU supported])
-LB_LINUX_TRY_COMPILE([
- #include <linux/rcupdate.h>
-],[],[
- AC_DEFINE(HAVE_RCU, 1, [have RCU defined])
- AC_MSG_RESULT([yes])
-
- AC_MSG_CHECKING([if call_rcu takes three parameters])
- LB_LINUX_TRY_COMPILE([
- #include <linux/rcupdate.h>
- ],[
- struct rcu_head rh;
- call_rcu(&rh, (void (*)(struct rcu_head *))1, NULL);
- ],[
- AC_DEFINE(HAVE_CALL_RCU_PARAM, 1, [call_rcu takes three parameters])
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- ])
-
-],[
- AC_MSG_RESULT([no])
-])
-])
-
-AC_DEFUN([LC_PERCPU_COUNTER],
-[AC_MSG_CHECKING([if have struct percpu_counter defined])
-LB_LINUX_TRY_COMPILE([
- #include <linux/percpu_counter.h>
-],[],[
- AC_DEFINE(HAVE_PERCPU_COUNTER, 1, [percpu_counter found])
- AC_MSG_RESULT([yes])
-
- AC_MSG_CHECKING([if percpu_counter_inc takes the 2nd argument])
- LB_LINUX_TRY_COMPILE([
- #include <linux/percpu_counter.h>
- ],[
- struct percpu_counter c;
- percpu_counter_init(&c, 0);
- ],[
- AC_DEFINE(HAVE_PERCPU_2ND_ARG, 1, [percpu_counter_init has two
- arguments])
- AC_MSG_RESULT([yes])
- ],[
- AC_MSG_RESULT([no])
- ])
-],[
- AC_MSG_RESULT([no])
-])
-])
-