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Linux compat 4.16: blk_queue_flag_{set,clear}

Browse Source 
queue_flag_{set,clear}_unlocked are now private interfaces in
the Linux kernel (https://github.com/torvalds/linux/commit/8a0ac14).
Use blk_queue_flag_{set,clear} interfaces which were introduced as
of https://github.com/torvalds/linux/commit/8814ce8.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #7410
This commit is contained in:
Giuseppe Di Natale 2018-04-10 10:32:14 -07:00 committed by Brian Behlendorf
parent 74df0c5e25
commit 10f88c5cd5
4 changed files with 60 additions and 4 deletions
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38
config/kernel-blk-queue-flags.m4 Normal file
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@ -0,0 +1,38 @@
dnl #
dnl # API change
dnl # https://github.com/torvalds/linux/commit/8814ce8
dnl # Introduction of blk_queue_flag_set and blk_queue_flag_clear
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_FLAG_SET], [
AC_MSG_CHECKING([whether blk_queue_flag_set() exists])
ZFS_LINUX_TRY_COMPILE([
#include <linux/kernel.h>
#include <linux/blkdev.h>
],[
struct request_queue *q = NULL;
blk_queue_flag_set(0, q);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLK_QUEUE_FLAG_SET, 1, [blk_queue_flag_set() exists])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_FLAG_CLEAR], [
AC_MSG_CHECKING([whether blk_queue_flag_clear() exists])
ZFS_LINUX_TRY_COMPILE([
#include <linux/kernel.h>
#include <linux/blkdev.h>
],[
struct request_queue *q = NULL;
blk_queue_flag_clear(0, q);
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BLK_QUEUE_FLAG_CLEAR, 1, [blk_queue_flag_clear() exists])
],[
AC_MSG_RESULT(no)
])
])

2
config/kernel.m4
View File

@ -36,6 +36,8 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_BIO_RW_BARRIER
ZFS_AC_KERNEL_BIO_RW_DISCARD
ZFS_AC_KERNEL_BLK_QUEUE_BDI
ZFS_AC_KERNEL_BLK_QUEUE_FLAG_CLEAR
ZFS_AC_KERNEL_BLK_QUEUE_FLAG_SET
ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS

16
include/linux/blkdev_compat.h
View File

@ -37,6 +37,22 @@
typedef unsigned __bitwise__ fmode_t;
#endif /* HAVE_FMODE_T */
#ifndef HAVE_BLK_QUEUE_FLAG_SET
static inline void
blk_queue_flag_set(unsigned int flag, struct request_queue *q)
{
queue_flag_set_unlocked(flag, q);
}
#endif
#ifndef HAVE_BLK_QUEUE_FLAG_CLEAR
static inline void
blk_queue_flag_clear(unsigned int flag, struct request_queue *q)
{
queue_flag_clear_unlocked(flag, q);
}
#endif
/*
* 4.7 - 4.x API,
* The blk_queue_write_cache() interface has replaced blk_queue_flush()

8
module/zfs/zvol.c
View File

@ -1696,7 +1696,7 @@ zvol_alloc(dev_t dev, const char *name)
blk_queue_set_read_ahead(zv->zv_queue, 1);
/* Disable write merging in favor of the ZIO pipeline. */
queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, zv->zv_queue);
blk_queue_flag_set(QUEUE_FLAG_NOMERGES, zv->zv_queue);
zv->zv_disk = alloc_disk(ZVOL_MINORS);
if (zv->zv_disk == NULL)
@ -1847,12 +1847,12 @@ zvol_create_minor_impl(const char *name)
blk_queue_max_discard_sectors(zv->zv_queue,
(zvol_max_discard_blocks * zv->zv_volblocksize) >> 9);
blk_queue_discard_granularity(zv->zv_queue, zv->zv_volblocksize);
queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, zv->zv_queue);
blk_queue_flag_set(QUEUE_FLAG_DISCARD, zv->zv_queue);
#ifdef QUEUE_FLAG_NONROT
queue_flag_set_unlocked(QUEUE_FLAG_NONROT, zv->zv_queue);
blk_queue_flag_set(QUEUE_FLAG_NONROT, zv->zv_queue);
#endif
#ifdef QUEUE_FLAG_ADD_RANDOM
queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, zv->zv_queue);
blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, zv->zv_queue);
#endif
if (spa_writeable(dmu_objset_spa(os))) {