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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@8603 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2019-10-06 21:31:20 +00:00
parent 3d5a5078ca
commit ea2d6ac0d9
1 changed files with 194 additions and 196 deletions
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390
scst/include/backport.h
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@@ -116,23 +116,6 @@ static inline void bio_set_dev(struct bio *bio, struct block_device *bdev)
}
#endif
/* <linux/blkdev.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
{
return q->max_hw_sectors;
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
/* See also commit ac481c20ef8f ("block: Topology ioctls") # v2.6.32 */
static inline int bdev_io_opt(struct block_device *bdev)
{
return 0;
}
#endif
/* <linux/blk-mq.h> */
static inline unsigned int scst_blk_rq_cpu(struct request *rq)
@@ -151,6 +134,23 @@ static inline unsigned int scst_blk_rq_cpu(struct request *rq)
#endif
}
/* <linux/blkdev.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
{
return q->max_hw_sectors;
}
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
/* See also commit ac481c20ef8f ("block: Topology ioctls") # v2.6.32 */
static inline int bdev_io_opt(struct block_device *bdev)
{
return 0;
}
#endif
/* <linux/bsg-lib.h> */
/*
@@ -692,6 +692,64 @@ static inline u32 int_sqrt64(u64 x)
}
#endif
#if LINUX_VERSION_CODE >> 8 == KERNEL_VERSION(4, 4, 0) >> 8 && \
LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 168)
/*
* See also commit 8e50b8b07f46 ("mm: replace get_user_pages() write/force
* parameters with gup_flags") # v4.4.168.
*/
static inline long get_user_pages_backport(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas)
{
return get_user_pages(current, current->mm, start, nr_pages, gup_flags,
pages, vmas);
}
#define get_user_pages get_user_pages_backport
#elif !defined(CONFIG_SUSE_KERNEL) && \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
/*
* See also commit cde70140fed8 ("mm/gup: Overload get_user_pages() functions")
* # v4.6.
*/
static inline long get_user_pages_backport(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas)
{
const bool write = gup_flags & FOLL_WRITE;
const bool force = 0;
WARN_ON_ONCE(gup_flags & ~FOLL_WRITE);
return get_user_pages(current, current->mm, start, nr_pages, write,
force, pages, vmas);
}
#define get_user_pages get_user_pages_backport
#elif (!defined(CONFIG_SUSE_KERNEL) && \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)) || \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)
/*
* See also commit 768ae309a961 ("mm: replace get_user_pages() write/force
* parameters with gup_flags") # v4.9.
*/
static inline long get_user_pages_backport(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas)
{
const bool write = gup_flags & FOLL_WRITE;
const bool force = 0;
WARN_ON_ONCE(gup_flags & ~FOLL_WRITE);
return get_user_pages(start, nr_pages, write, force, pages, vmas);
}
#define get_user_pages get_user_pages_backport
#endif
/* <linux/kmod.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23)
@@ -780,66 +838,6 @@ static inline bool list_entry_in_list(const struct list_head *entry)
#define lockdep_assert_held(l) (void)(l)
#endif
/* <linux/kernel.h> */
#if LINUX_VERSION_CODE >> 8 == KERNEL_VERSION(4, 4, 0) >> 8 && \
LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 168)
/*
* See also commit 8e50b8b07f46 ("mm: replace get_user_pages() write/force
* parameters with gup_flags") # v4.4.168.
*/
static inline long get_user_pages_backport(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas)
{
return get_user_pages(current, current->mm, start, nr_pages, gup_flags,
pages, vmas);
}
#define get_user_pages get_user_pages_backport
#elif !defined(CONFIG_SUSE_KERNEL) && \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0)
/*
* See also commit cde70140fed8 ("mm/gup: Overload get_user_pages() functions")
* # v4.6.
*/
static inline long get_user_pages_backport(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas)
{
const bool write = gup_flags & FOLL_WRITE;
const bool force = 0;
WARN_ON_ONCE(gup_flags & ~FOLL_WRITE);
return get_user_pages(current, current->mm, start, nr_pages, write,
force, pages, vmas);
}
#define get_user_pages get_user_pages_backport
#elif (!defined(CONFIG_SUSE_KERNEL) && \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 9, 0)) || \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)
/*
* See also commit 768ae309a961 ("mm: replace get_user_pages() write/force
* parameters with gup_flags") # v4.9.
*/
static inline long get_user_pages_backport(unsigned long start,
unsigned long nr_pages,
unsigned int gup_flags,
struct page **pages,
struct vm_area_struct **vmas)
{
const bool write = gup_flags & FOLL_WRITE;
const bool force = 0;
WARN_ON_ONCE(gup_flags & ~FOLL_WRITE);
return get_user_pages(start, nr_pages, write, force, pages, vmas);
}
#define get_user_pages get_user_pages_backport
#endif
/* <linux/mempoool.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 3, 0)
/*
@@ -1011,6 +1009,89 @@ static inline int pcie_capability_read_dword(struct pci_dev *dev, int pos,
}
#endif
/* <linux/percpu-refcount.h> */
#if defined(RHEL_MAJOR) && RHEL_MAJOR -0 >= 7
#include <linux/percpu-refcount.h>
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0)
#include <linux/percpu-refcount.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
/*
* See also commit 2aad2a86f668 ("percpu_ref: add PERCPU_REF_INIT_* flags")
* # v3.18.
*/
static inline int __must_check percpu_ref_init_backport(struct percpu_ref *ref,
percpu_ref_func_t *release, unsigned int flags,
gfp_t gfp)
{
WARN_ON_ONCE(flags != 0);
WARN_ON_ONCE(gfp != GFP_KERNEL);
return percpu_ref_init(ref, release);
}
#define percpu_ref_init percpu_ref_init_backport
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
/*
* See also commit 2d7227828e14 ("percpu-refcount: implement percpu_ref_reinit()
* and percpu_ref_is_zero()") # v3.17.
*/
static inline bool percpu_ref_is_zero(struct percpu_ref *ref)
{
return !atomic_read(&ref->count);
}
/*
* See also commit 9a1049da9bd2 ("percpu-refcount: require percpu_ref to be
* exited explicitly") # v3.17.
*/
static inline void percpu_ref_exit(struct percpu_ref *ref)
{
}
#endif
#else
struct percpu_ref;
typedef void (percpu_ref_func_t)(struct percpu_ref *);
struct percpu_ref {
atomic_long_t count;
percpu_ref_func_t *release;
};
static inline int __must_check percpu_ref_init(struct percpu_ref *ref,
percpu_ref_func_t *release, unsigned int flags,
gfp_t gfp)
{
WARN_ON_ONCE(flags != 0);
atomic_long_set(&ref->count, 1);
ref->release = release;
return 0;
}
static inline void percpu_ref_exit(struct percpu_ref *ref)
{
}
static inline void percpu_ref_get(struct percpu_ref *ref)
{
atomic_long_inc(&ref->count);
}
static inline void percpu_ref_put(struct percpu_ref *ref)
{
if (unlikely(atomic_long_dec_and_test(&ref->count)))
ref->release(ref);
}
static inline void percpu_ref_kill(struct percpu_ref *ref)
{
percpu_ref_put(ref);
}
static inline bool percpu_ref_is_zero(struct percpu_ref *ref)
{
return !atomic_long_read(&ref->count);
}
#endif
/* <linux/preempt.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
@@ -1160,115 +1241,6 @@ static inline void init_rcu_head(struct rcu_head *head) { }
static inline void destroy_rcu_head(struct rcu_head *head) { }
#endif
/* <rdma/ib_verbs.h> */
/* commit ed082d36 */
#ifndef ib_alloc_pd
static inline struct ib_pd *ib_alloc_pd_backport(struct ib_device *device)
{
return ib_alloc_pd(device);
}
#define ib_alloc_pd(device, flags) \
({ \
(void)(flags), ib_alloc_pd_backport(device); \
})
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0)
#define ib_sg_dma_len(dev, sg) sg_dma_len(sg)
#define ib_sg_dma_address(dev, sg) sg_dma_address(sg)
#endif
/* <linux/sched.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26) && \
(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6)
#define set_cpus_allowed_ptr(p, new_mask) set_cpus_allowed((p), *(new_mask))
#endif
/* <linux/percpu-refcount.h> */
#if defined(RHEL_MAJOR) && RHEL_MAJOR -0 >= 7
#include <linux/percpu-refcount.h>
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0)
#include <linux/percpu-refcount.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
/*
* See also commit 2aad2a86f668 ("percpu_ref: add PERCPU_REF_INIT_* flags")
* # v3.18.
*/
static inline int __must_check percpu_ref_init_backport(struct percpu_ref *ref,
percpu_ref_func_t *release, unsigned int flags,
gfp_t gfp)
{
WARN_ON_ONCE(flags != 0);
WARN_ON_ONCE(gfp != GFP_KERNEL);
return percpu_ref_init(ref, release);
}
#define percpu_ref_init percpu_ref_init_backport
#endif
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
/*
* See also commit 2d7227828e14 ("percpu-refcount: implement percpu_ref_reinit()
* and percpu_ref_is_zero()") # v3.17.
*/
static inline bool percpu_ref_is_zero(struct percpu_ref *ref)
{
return !atomic_read(&ref->count);
}
/*
* See also commit 9a1049da9bd2 ("percpu-refcount: require percpu_ref to be
* exited explicitly") # v3.17.
*/
static inline void percpu_ref_exit(struct percpu_ref *ref)
{
}
#endif
#else
struct percpu_ref;
typedef void (percpu_ref_func_t)(struct percpu_ref *);
struct percpu_ref {
atomic_long_t count;
percpu_ref_func_t *release;
};
static inline int __must_check percpu_ref_init(struct percpu_ref *ref,
percpu_ref_func_t *release, unsigned int flags,
gfp_t gfp)
{
WARN_ON_ONCE(flags != 0);
atomic_long_set(&ref->count, 1);
ref->release = release;
return 0;
}
static inline void percpu_ref_exit(struct percpu_ref *ref)
{
}
static inline void percpu_ref_get(struct percpu_ref *ref)
{
atomic_long_inc(&ref->count);
}
static inline void percpu_ref_put(struct percpu_ref *ref)
{
if (unlikely(atomic_long_dec_and_test(&ref->count)))
ref->release(ref);
}
static inline void percpu_ref_kill(struct percpu_ref *ref)
{
percpu_ref_put(ref);
}
static inline bool percpu_ref_is_zero(struct percpu_ref *ref)
{
return !atomic_long_read(&ref->count);
}
#endif
/* <linux/scatterlist.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
@@ -1351,6 +1323,13 @@ static inline void sg_unmark_end(struct scatterlist *sg)
}
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24) */
/* <linux/sched.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26) && \
(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6)
#define set_cpus_allowed_ptr(p, new_mask) set_cpus_allowed((p), *(new_mask))
#endif
/* <linux/slab.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22)
@@ -1420,16 +1399,6 @@ static inline struct kmem_cache *kmem_cache_create_usercopy(const char *name,
sizeof_field(struct __struct, __field), NULL)
#endif
/* <linux/t10-pi.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
struct t10_pi_tuple {
__be16 guard_tag;
__be16 app_tag;
__be32 ref_tag;
};
#endif
/* <linux/stddef.h> */
#ifndef sizeof_field
@@ -1467,6 +1436,16 @@ static inline void *memdup_user_nul(const void __user *src, size_t len)
#define __ATTR_RW(_name) __ATTR(_name, 0644, _name##_show, _name##_store)
#endif
/* <linux/t10-pi.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
struct t10_pi_tuple {
__be16 guard_tag;
__be16 app_tag;
__be32 ref_tag;
};
#endif
/* <linux/timer.h> */
/*
@@ -1588,6 +1567,25 @@ static inline struct workqueue_struct *alloc_workqueue(const char *fmt,
}
#endif
/* <rdma/ib_verbs.h> */
/* commit ed082d36 */
#ifndef ib_alloc_pd
static inline struct ib_pd *ib_alloc_pd_backport(struct ib_device *device)
{
return ib_alloc_pd(device);
}
#define ib_alloc_pd(device, flags) \
({ \
(void)(flags), ib_alloc_pd_backport(device); \
})
#endif
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0)
#define ib_sg_dma_len(dev, sg) sg_dma_len(sg)
#define ib_sg_dma_address(dev, sg) sg_dma_address(sg)
#endif
/* <scsi/scsi_cmnd.h> */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24) || \