30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
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dnl #
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dnl # 3.5.0 API change
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dnl # torvalds/linux@dbd5768f87ff6fb0a4fe09c4d7b6c4a24de99430 and
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dnl # torvalds/linux@7994e6f7254354e03028a11f98a27bd67dace9f1 reworked
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dnl # where inode_sync_wait() is called.
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dnl #
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dnl # Prior to these changes it would occur in end_writeback() but due
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dnl # to various issues (described in the above commits) it has been
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dnl # moved to evict(). This changes the ordering is which sync occurs
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dnl # but otherwise doesn't impact the zpl implementation.
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dnl #
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dnl # The major impact here is the renaming of end_writeback() to
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dnl # clear_inode(). However, care must be taken when detecting this
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dnl # API change because as recently as 2.6.35 there was a clear_inode()
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dnl # function. However, it was made obsolete by the evict_inode() API
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dnl # change at the same time.
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dnl #
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dnl # Therefore, to ensure we have the correct API we only allow the
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dnl # clear_inode() compatibility code to be defined iff the evict_inode()
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dnl # functionality is also detected.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_CLEAR_INODE], [
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ZFS_CHECK_SYMBOL_EXPORT(
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[clear_inode],
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[fs/inode.c],
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[AC_DEFINE(HAVE_CLEAR_INODE, 1,
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[clear_inode() is available])],
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[])
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])
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