diff options
Diffstat (limited to 'config/kernel-bio-end-io-t-args.m4')
| -rw-r--r-- | config/kernel-bio-end-io-t-args.m4 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/config/kernel-bio-end-io-t-args.m4 b/config/kernel-bio-end-io-t-args.m4 new file mode 100644 index 000000000..ea69bdba5 --- /dev/null +++ b/config/kernel-bio-end-io-t-args.m4 @@ -0,0 +1,29 @@ +dnl # +dnl # 2.6.24 API change +dnl # Size argument dropped from bio_endio and bi_end_io, because the +dnl # bi_end_io is only called once now when the request is complete. +dnl # There is no longer any need for a size argument. This also means +dnl # that partial IO's are no longer possibe and the end_io callback +dnl # should not check bi->bi_size. Finally, the return type was updated +dnl # to void. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_BIO_END_IO_T_ARGS], [ + AC_MSG_CHECKING([whether bio_end_io_t wants 2 args]) + tmp_flags="$EXTRA_KCFLAGS" + EXTRA_KCFLAGS="-Werror" + ZFS_LINUX_TRY_COMPILE([ + #include <linux/bio.h> + ],[ + void (*wanted_end_io)(struct bio *, int) = NULL; + bio_end_io_t *local_end_io; + + local_end_io = wanted_end_io; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_2ARGS_BIO_END_IO_T, 1, + [bio_end_io_t wants 2 args]) + ],[ + AC_MSG_RESULT(no) + ]) + EXTRA_KCFLAGS="$tmp_flags" +]) |