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Commit | Line | Data |
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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 # | |
7 | AC_DEFUN([SPL_AC_INODE_LOCK], [ | |
8 | AC_MSG_CHECKING([whether inode_lock_shared() exists]) | |
9 | tmp_flags="$EXTRA_KCFLAGS" | |
10 | EXTRA_KCFLAGS="-Werror" | |
11 | SPL_LINUX_TRY_COMPILE([ | |
12 | #include <linux/fs.h> | |
13 | ],[ | |
14 | struct inode *inode = NULL; | |
15 | inode_lock_shared(inode); | |
16 | ],[ | |
17 | AC_MSG_RESULT(yes) | |
18 | AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes]) | |
19 | ],[ | |
20 | AC_MSG_RESULT(no) | |
21 | ]) | |
22 | EXTRA_KCFLAGS="$tmp_flags" | |
23 | ]) |