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zfs/config/kernel-insert-inode-locked.m4

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Linux 2.6.28 compat, insert_inode_locked() Added insert_inode_locked() helper function, prior to this most callers used insert_inode_hash(). The older method doesn't check for collisions in the inode_hashtable but it still acceptible for use. Fallback to using insert_inode_hash() when insert_inode_locked() is unavailable.
2011-03-22 16:55:09 +00:00
dnl #
dnl # 2.6.28 API change
dnl # Added insert_inode_locked() helper function.
dnl #
When checking for symbol exports, try compiling. This patch adds a new autoconf function: ZFS_LINUX_TRY_COMPILE_SYMBOL. This new function does the following: - Call LINUX_TRY_COMPILE with the specified parameters. - If unsuccessful, return false. - If successful and we're configuring with --enable-linux-builtin, return true. - Else, call CHECK_SYMBOL_EXPORT with the specified parameters and return the result. All calls to CHECK_SYMBOL_EXPORT are converted to LINUX_TRY_COMPILE_SYMBOL so that the tests work even when configuring for builtin on a kernel which doesn't have loadable module support, or hasn't been built yet. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #851
2012-07-25 21:38:58 +00:00
AC_DEFUN([ZFS_AC_KERNEL_INSERT_INODE_LOCKED],
[AC_MSG_CHECKING([whether insert_inode_locked() is available])
ZFS_LINUX_TRY_COMPILE_SYMBOL([
#include <linux/fs.h>
], [
insert_inode_locked(NULL);
], [insert_inode_locked], [fs/inode.c], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_INSERT_INODE_LOCKED, 1,
[insert_inode_locked() is available])
], [
AC_MSG_RESULT(no)
])
Linux 2.6.28 compat, insert_inode_locked() Added insert_inode_locked() helper function, prior to this most callers used insert_inode_hash(). The older method doesn't check for collisions in the inode_hashtable but it still acceptible for use. Fallback to using insert_inode_hash() when insert_inode_locked() is unavailable.
2011-03-22 16:55:09 +00:00
])