OpenZFS 4185 - add new cryptographic checksums to ZFS: SHA-512, Skein, Edon-R
[zfs.git] / config / kernel-commit-metadata.m4
blobb66a16fd212da1f622f0a2295cee4f0d4268b816
1 dnl #
2 dnl # 2.6.33 API change
3 dnl # Added eops->commit_metadata() callback to allow the underlying
4 dnl # filesystem to determine the most efficient way to commit the inode.
5 dnl # Prior to this the nfs server would issue an explicit fsync().
6 dnl #
7 AC_DEFUN([ZFS_AC_KERNEL_COMMIT_METADATA], [
8         AC_MSG_CHECKING([whether eops->commit_metadata() exists])
9         ZFS_LINUX_TRY_COMPILE([
10                 #include <linux/exportfs.h>
11                 int commit_metadata(struct inode *inode) { return 0; }
12                 static struct export_operations eops __attribute__ ((unused))={
13                         .commit_metadata = commit_metadata,
14                 };
15         ],[
16         ],[
17                 AC_MSG_RESULT(yes)
18                 AC_DEFINE(HAVE_COMMIT_METADATA, 1,
19                           [eops->commit_metadata() exists])
20         ],[
21                 AC_MSG_RESULT(no)
22         ])