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x86/pat, mm: Make track_pfn_insert() return void 

It only returns 0 so we can save us the testing of its retval
everywhere.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: mcgrof@suse.com
Cc: dri-devel@lists.freedesktop.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dan.j.williams@intel.com
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/20161026174839.rusfxkm3xt4ennhe@pd.tnic
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Borislav Petkov 2016-10-26 19:43:43 +02:00 committed by Thomas Gleixner
parent bc33b0ca11
commit 308a047c3f
4 changed files with 13 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/mm/pat.c
View File

@ -986,20 +986,17 @@ int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot,
return 0;
}
int track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot,
pfn_t pfn)
void track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot, pfn_t pfn)
{
enum page_cache_mode pcm;
if (!pat_enabled())
return 0;
return;
/* Set prot based on lookup */
pcm = lookup_memtype(pfn_t_to_phys(pfn));
*prot = __pgprot((pgprot_val(*prot) & (~_PAGE_CACHE_MASK)) |
cachemode2protval(pcm));
return 0;
}
/*

9
include/asm-generic/pgtable.h
View File

@ -558,10 +558,9 @@ static inline int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot,
* track_pfn_insert is called when a _new_ single pfn is established
* by vm_insert_pfn().
*/
static inline int track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot,
pfn_t pfn)
static inline void track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot,
pfn_t pfn)
{
return 0;
}
/*
@ -593,8 +592,8 @@ static inline void untrack_pfn_moved(struct vm_area_struct *vma)
extern int track_pfn_remap(struct vm_area_struct *vma, pgprot_t *prot,
unsigned long pfn, unsigned long addr,
unsigned long size);
extern int track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot,
pfn_t pfn);
extern void track_pfn_insert(struct vm_area_struct *vma, pgprot_t *prot,
pfn_t pfn);
extern int track_pfn_copy(struct vm_area_struct *vma);
extern void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn,
unsigned long size);

5
mm/huge_memory.c
View File

@ -737,8 +737,9 @@ int vmf_insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr,
if (addr < vma->vm_start || addr >= vma->vm_end)
return VM_FAULT_SIGBUS;
if (track_pfn_insert(vma, &pgprot, pfn))
return VM_FAULT_SIGBUS;
track_pfn_insert(vma, &pgprot, pfn);
insert_pfn_pmd(vma, addr, pmd, pfn, pgprot, write);
return VM_FAULT_NOPAGE;
}

8
mm/memory.c
View File

@ -1637,8 +1637,8 @@ int vm_insert_pfn_prot(struct vm_area_struct *vma, unsigned long addr,
if (addr < vma->vm_start || addr >= vma->vm_end)
return -EFAULT;
if (track_pfn_insert(vma, &pgprot, __pfn_to_pfn_t(pfn, PFN_DEV)))
return -EINVAL;
track_pfn_insert(vma, &pgprot, __pfn_to_pfn_t(pfn, PFN_DEV));
ret = insert_pfn(vma, addr, __pfn_to_pfn_t(pfn, PFN_DEV), pgprot);
@ -1655,8 +1655,8 @@ int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr,
if (addr < vma->vm_start || addr >= vma->vm_end)
return -EFAULT;
if (track_pfn_insert(vma, &pgprot, pfn))
return -EINVAL;
track_pfn_insert(vma, &pgprot, pfn);
/*
* If we don't have pte special, then we have to use the pfn_valid()