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58a707375f
Using the filemap_splice_read function for the splice_read handler was leading to occasional data corruption under certain circumstances. Favor using copy_splice_read instead, which does not demonstrate the same erroneous behavior under the tested failure cases. Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Coleman Kane <ckane@colemankane.org> Closes #15164
26 lines
675 B
Plaintext
26 lines
675 B
Plaintext
AC_DEFUN([ZFS_AC_KERNEL_SRC_COPY_SPLICE_READ], [
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dnl #
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dnl # Kernel 6.5 - generic_file_splice_read was removed in favor
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dnl # of copy_splice_read for the .splice_read member of the
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dnl # file_operations struct.
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dnl #
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ZFS_LINUX_TEST_SRC([has_copy_splice_read], [
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#include <linux/fs.h>
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struct file_operations fops __attribute__((unused)) = {
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.splice_read = copy_splice_read,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_COPY_SPLICE_READ], [
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AC_MSG_CHECKING([whether copy_splice_read() exists])
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ZFS_LINUX_TEST_RESULT([has_copy_splice_read], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_COPY_SPLICE_READ, 1,
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[copy_splice_read 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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