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9cabcac115
2.6.22 API change Unused destroy_dirty_buffers arg removed from prototype. 2.6.24 API change Empty write barriers are now supported and we should use them. 2.6.24 API change Size argument dropped from bio_endio and bi_end_io, because the bi_end_io is only called once now when the request is complete. There is no longer any need for a size argument. This also means that partial IO's are no longer possibe and the end_io callback should not check bi->bi_size. Finally, the return type was updated to void. 2.6.28 API change open/close_bdev_excl() renamed to open/close_bdev_exclusive(). 2.6.29 API change BIO_RW_SYNC renamed to BIO_RW_SYNCIO.
21 lines
483 B
Plaintext
21 lines
483 B
Plaintext
dnl #
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dnl # 2.6.24 API change
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dnl # Empty write barriers are now supported and we should use them.
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dnl #
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AC_DEFUN([ZFS_AC_KERNEL_BIO_EMPTY_BARRIER], [
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AC_MSG_CHECKING([whether bio_empty_barrier() is defined])
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EXTRA_KCFLAGS="-Werror"
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ZFS_LINUX_TRY_COMPILE([
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#include <linux/bio.h>
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],[
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struct bio bio;
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(void)bio_empty_barrier(&bio);
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],[
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_BIO_EMPTY_BARRIER, 1,
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[bio_empy_barrier() is defined])
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],[
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AC_MSG_RESULT(no)
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])
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])
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