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-lseek-execute.m4

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    1 dnl #
    2 dnl # 3.11 API change
    3 dnl # lseek_execute helper exported
    4 dnl #
    5 AC_DEFUN([ZFS_AC_KERNEL_SRC_LSEEK_EXECUTE], [
    6         ZFS_LINUX_TEST_SRC([lseek_execute], [
    7                 #include <linux/fs.h>
    8         ], [
    9                 struct file *fp __attribute__ ((unused)) = NULL;
   10                 struct inode *ip __attribute__ ((unused)) = NULL;
   11                 loff_t offset __attribute__ ((unused)) = 0;
   12                 loff_t maxsize __attribute__ ((unused)) = 0;
   13 
   14                 lseek_execute(fp, ip, offset, maxsize);
   15         ])
   16 ])
   17 
   18 AC_DEFUN([ZFS_AC_KERNEL_LSEEK_EXECUTE], [
   19         AC_MSG_CHECKING([whether lseek_execute() is available])
   20         ZFS_LINUX_TEST_RESULT_SYMBOL([lseek_execute],
   21             [lseek_exclusive], [fs/read_write.c], [
   22                 AC_MSG_RESULT(yes)
   23                 AC_DEFINE(HAVE_LSEEK_EXECUTE, 1, [lseek_execute() is available])
   24         ], [
   25                 AC_MSG_RESULT(no)
   26         ])
   27 ])

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