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48ef8ba0 BB |
1 | dnl # |
2 | dnl # 4.7 API change | |
3 | dnl # i_mutex is changed to i_rwsem. Instead of directly using | |
4 | dnl # i_mutex/i_rwsem, we should use inode_lock() and inode_lock_shared() | |
5 | dnl # We test inode_lock_shared because inode_lock is introduced earlier. | |
6 | dnl # | |
608f8749 BB |
7 | AC_DEFUN([ZFS_AC_KERNEL_SRC_INODE_LOCK], [ |
8 | ZFS_LINUX_TEST_SRC([inode_lock], [ | |
48ef8ba0 BB |
9 | #include <linux/fs.h> |
10 | ],[ | |
11 | struct inode *inode = NULL; | |
12 | inode_lock_shared(inode); | |
608f8749 BB |
13 | ]) |
14 | ]) | |
15 | ||
16 | AC_DEFUN([ZFS_AC_KERNEL_INODE_LOCK], [ | |
17 | AC_MSG_CHECKING([whether inode_lock_shared() exists]) | |
18 | ZFS_LINUX_TEST_RESULT([inode_lock], [ | |
48ef8ba0 BB |
19 | AC_MSG_RESULT(yes) |
20 | AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes]) | |
21 | ],[ | |
22 | AC_MSG_RESULT(no) | |
23 | ]) | |
48ef8ba0 | 24 | ]) |