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393b44c711
In order to implement synchronous NFS metadata semantics ZFS needs to provide the .commit_metadata hook. All it takes there is to make sure changes are committed to ZIL. Fortunately zfs_fsync() does just that, so simply calling it from zpl_commit_metadata() does the trick. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #969
24 lines
718 B
Plaintext
24 lines
718 B
Plaintext
dnl #
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dnl # 2.6.33 API change
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dnl # Added eops->commit_metadata() callback to allow the underlying
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dnl # filesystem to determine the most efficient way to commit the inode.
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dnl # Prior to this the nfs server would issue an explicit fsync().
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_COMMIT_METADATA], [
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AC_MSG_CHECKING([whether eops->commit_metadata() exists])
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/exportfs.h>
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int commit_metadata(struct inode *inode) { return 0; }
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static struct export_operations eops __attribute__ ((unused))={
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.commit_metadata = commit_metadata,
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};
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],[
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_COMMIT_METADATA, 1,
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[eops->commit_metadata() exists])
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],[
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AC_MSG_RESULT(no)
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])
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])
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