diff options
Diffstat (limited to 'config/kernel-bio-op.m4')
| -rw-r--r-- | config/kernel-bio-op.m4 | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/config/kernel-bio-op.m4 b/config/kernel-bio-op.m4 new file mode 100644 index 000000000..b4b699517 --- /dev/null +++ b/config/kernel-bio-op.m4 @@ -0,0 +1,67 @@ +dnl # +dnl # Linux 4.8 API, +dnl # +dnl # The bio_op() helper was introduced as a replacement for explicitly +dnl # checking the bio->bi_rw flags. The following checks are used to +dnl # detect if a specific operation is supported. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_DISCARD], [ + AC_MSG_CHECKING([whether REQ_OP_DISCARD is defined]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blk_types.h> + ],[ + enum req_op op __attribute__ ((unused)) = REQ_OP_DISCARD; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_REQ_OP_DISCARD, 1, + [REQ_OP_DISCARD is defined]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_SECURE_ERASE], [ + AC_MSG_CHECKING([whether REQ_OP_SECURE_ERASE is defined]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blk_types.h> + ],[ + enum req_op op __attribute__ ((unused)) = REQ_OP_SECURE_ERASE; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_REQ_OP_SECURE_DISCARD, 1, + [REQ_OP_SECURE_ERASE is defined]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + + +AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_FLUSH], [ + AC_MSG_CHECKING([whether REQ_OP_FLUSH is defined]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/blk_types.h> + ],[ + enum req_op op __attribute__ ((unused)) = REQ_OP_FLUSH; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_REQ_OP_FLUSH, 1, + [REQ_OP_FLUSH is defined]) + ],[ + AC_MSG_RESULT(no) + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_BIO_BI_OPF], [ + AC_MSG_CHECKING([whether bio->bi_opf is defined]) + ZFS_LINUX_TRY_COMPILE([ + #include <linux/bio.h> + ],[ + struct bio bio __attribute__ ((unused)); + bio.bi_opf = 0; + ],[ + AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_BIO_BI_OPF, 1, [bio->bi_opf is defined]) + ],[ + AC_MSG_RESULT(no) + ]) +]) |