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The inode eviction should unmap the pages associated with the inode. These pages should also be flushed to disk to avoid the data loss. Therefore, use truncate_setsize() in evict_inode() to release the pagecache. The API truncate_setsize() was added in 2.6.35 kernel. To ensure compatibility with the old kernel, the patch defines its own truncate_setsize function. Signed-off-by: Prasad Joshi <pjoshi@stec-inc.com> Closes #255
13 lines
283 B
Plaintext
13 lines
283 B
Plaintext
dnl #
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dnl # 2.6.35 API change
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dnl # Added truncate_setsize() helper function.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_TRUNCATE_SETSIZE], [
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ZFS_CHECK_SYMBOL_EXPORT(
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[truncate_setsize],
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[mm/truncate.c],
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[AC_DEFINE(HAVE_TRUNCATE_SETSIZE, 1,
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[truncate_setsize() is available])],
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[])
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])
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