c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

Linux 5.12 update: bio_max_segs() replaces BIO_MAX_PAGES

Browse Source 
The BIO_MAX_PAGES macro is being retired in favor of a bio_max_segs()
function that implements the typical MIN(x,y) logic used throughout the
kernel for bounding the allocation, and also the new implementation is
intended to be signed-safe (which the former was not).

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Coleman Kane <ckane@colemankane.org>
Closes #11765
This commit is contained in:
Coleman Kane
2021-03-20 01:33:42 -04:00
committed by GitHub
parent e2a8296131
commit ffd6978ef5
3 changed files with 30 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
config/kernel-bio_max_segs.m4
+23
View File
@@ -0,0 +1,23 @@
dnl #
dnl # 5.12 API change removes BIO_MAX_PAGES in favor of bio_max_segs()
dnl # which will handle the logic of setting the upper-bound to a
dnl # BIO_MAX_PAGES, internally.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_MAX_SEGS], [
ZFS_LINUX_TEST_SRC([bio_max_segs], [
#include <linux/bio.h>
],[
bio_max_segs(1);
])
])
AC_DEFUN([ZFS_AC_KERNEL_BIO_MAX_SEGS], [
AC_MSG_CHECKING([whether bio_max_segs() exists])
ZFS_LINUX_TEST_RESULT([bio_max_segs], [
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_BIO_MAX_SEGS], 1, [bio_max_segs() is implemented])
],[
AC_MSG_RESULT(no)
])
])
config/kernel.m4
+2
View File
@@ -128,6 +128,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [
ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS
ZFS_AC_KERNEL_SRC_MKNOD
ZFS_AC_KERNEL_SRC_SYMLINK
ZFS_AC_KERNEL_SRC_BIO_MAX_SEGS
AC_MSG_CHECKING([for available kernel interfaces])
ZFS_LINUX_TEST_COMPILE_ALL([kabi])
@@ -229,6 +230,7 @@ AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [
ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS
ZFS_AC_KERNEL_MKNOD
ZFS_AC_KERNEL_SYMLINK
ZFS_AC_KERNEL_BIO_MAX_SEGS
])
dnl #