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36261c8238
The generic_file_splice_read function was removed in Linux 6.5 in favor of filemap_splice_read. Add an autoconf test for filemap_splice_read and use it if it is found as the handler for .splice_read in the file_operations struct. Additionally, ITER_PIPE was removed in 6.5. This change removes the ITER_* macros that OpenZFS doesn't use from being tested in config/kernel-vfs-iov_iter.m4. The removal of ITER_PIPE was causing the test to fail, which also affected the code responsible for setting the .splice_read handler, above. That behavior caused run-time panics on Linux 6.5. Reviewed-by: Brian Atkinson <batkinson@lanl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Coleman Kane <ckane@colemankane.org> Closes #15155
26 lines
702 B
Plaintext
26 lines
702 B
Plaintext
AC_DEFUN([ZFS_AC_KERNEL_SRC_FILEMAP_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 filemap_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_filemap_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 = filemap_splice_read,
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};
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],[])
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])
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AC_DEFUN([ZFS_AC_KERNEL_FILEMAP_SPLICE_READ], [
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AC_MSG_CHECKING([whether filemap_splice_read() exists])
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ZFS_LINUX_TEST_RESULT([has_filemap_splice_read], [
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AC_MSG_RESULT(yes)
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AC_DEFINE(HAVE_FILEMAP_SPLICE_READ, 1,
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[filemap_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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