The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel-truncate-setsize.m4

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    1 dnl #
    2 dnl # 2.6.35 API change
    3 dnl # Added truncate_setsize() helper function.
    4 dnl #
    5 AC_DEFUN([ZFS_AC_KERNEL_SRC_TRUNCATE_SETSIZE], [
    6         ZFS_LINUX_TEST_SRC([truncate_setsize], [
    7                 #include <linux/mm.h>
    8         ], [
    9                 truncate_setsize(NULL, 0);
   10         ])
   11 ])
   12 
   13 AC_DEFUN([ZFS_AC_KERNEL_TRUNCATE_SETSIZE], [
   14         AC_MSG_CHECKING([whether truncate_setsize() is available])
   15         ZFS_LINUX_TEST_RESULT_SYMBOL([truncate_setsize],
   16             [truncate_setsize], [mm/truncate.c], [
   17                 AC_MSG_RESULT(yes)
   18         ], [
   19                 ZFS_LINUX_TEST_ERROR([truncate_setsize])
   20         ])
   21 ])

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