diff options
| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2014-04-03 14:48:08 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-03 16:21:03 -0700 |
| commit | 80d7ef66142b0b4358223790e7a4cb153b48a05c (patch) | |
| tree | 015aa1bba559be299fe895da2d1df4f83919144c /mm | |
| parent | include/linux/mm.h: remove ifdef condition (diff) | |
| download | linux-dev-80d7ef66142b0b4358223790e7a4cb153b48a05c.tar.xz linux-dev-80d7ef66142b0b4358223790e7a4cb153b48a05c.zip | |
mm: rename __do_fault() -> do_fault()
Current __do_fault() is awful and unmaintainable. These patches try to
sort it out by split __do_fault() into three destinct codepaths:
- to handle read page fault;
- to handle write page fault to private mappings;
- to handle write page fault to shared mappings;
I also found page refcount leak in PageHWPoison() path of __do_fault().
This patch (of 7):
do_fault() is unused: no reason for underscores.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/memory.c b/mm/memory.c index 57ff3510ddbd..144e8cd07805 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2748,7 +2748,7 @@ reuse: * bit after it clear all dirty ptes, but before a racing * do_wp_page installs a dirty pte. * - * __do_fault is protected similarly. + * do_fault is protected similarly. */ if (!page_mkwrite) { wait_on_page_locked(dirty_page); @@ -3287,7 +3287,7 @@ oom: } /* - * __do_fault() tries to create a new page mapping. It aggressively + * do_fault() tries to create a new page mapping. It aggressively * tries to share with existing pages, but makes a separate copy if * the FAULT_FLAG_WRITE is set in the flags parameter in order to avoid * the next page fault. @@ -3299,7 +3299,7 @@ oom: * but allow concurrent faults), and pte neither mapped nor locked. * We return with mmap_sem still held, but pte unmapped and unlocked. */ -static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, +static int do_fault(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long address, pmd_t *pmd, pgoff_t pgoff, unsigned int flags, pte_t orig_pte) { @@ -3496,7 +3496,7 @@ static int do_linear_fault(struct mm_struct *mm, struct vm_area_struct *vma, - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff; pte_unmap(page_table); - return __do_fault(mm, vma, address, pmd, pgoff, flags, orig_pte); + return do_fault(mm, vma, address, pmd, pgoff, flags, orig_pte); } /* @@ -3528,7 +3528,7 @@ static int do_nonlinear_fault(struct mm_struct *mm, struct vm_area_struct *vma, } pgoff = pte_to_pgoff(orig_pte); - return __do_fault(mm, vma, address, pmd, pgoff, flags, orig_pte); + return do_fault(mm, vma, address, pmd, pgoff, flags, orig_pte); } static int numa_migrate_prep(struct page *page, struct vm_area_struct *vma, |