mm: change return type to vm_fault_t
Use new return type vm_fault_t for fault handler in struct
vm_operations_struct. For now, this is just documenting that the
function returns a VM_FAULT value rather than an errno. Once all
instances are converted, vm_fault_t will become a distinct type.
See commit 1c8f422059
("mm: change return type to vm_fault_t")
Link: http://lkml.kernel.org/r/20180512063745.GA26866@jordon-HP-15-Notebook-PC
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Joe Perches <joe@perches.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Родитель
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Коммит
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@ -629,9 +629,9 @@ struct vm_special_mapping {
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* If non-NULL, then this is called to resolve page faults
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* on the special mapping. If used, .pages is not checked.
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*/
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int (*fault)(const struct vm_special_mapping *sm,
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struct vm_area_struct *vma,
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struct vm_fault *vmf);
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vm_fault_t (*fault)(const struct vm_special_mapping *sm,
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struct vm_area_struct *vma,
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struct vm_fault *vmf);
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int (*mremap)(const struct vm_special_mapping *sm,
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struct vm_area_struct *new_vma);
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@ -3159,7 +3159,7 @@ static unsigned long hugetlb_vm_op_pagesize(struct vm_area_struct *vma)
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* hugegpage VMA. do_page_fault() is supposed to trap this, so BUG is we get
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* this far.
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*/
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static int hugetlb_vm_op_fault(struct vm_fault *vmf)
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static vm_fault_t hugetlb_vm_op_fault(struct vm_fault *vmf)
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{
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BUG();
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return 0;
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@ -3277,7 +3277,7 @@ void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages)
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mm->data_vm += npages;
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}
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static int special_mapping_fault(struct vm_fault *vmf);
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static vm_fault_t special_mapping_fault(struct vm_fault *vmf);
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/*
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* Having a close hook prevents vma merging regardless of flags.
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@ -3316,7 +3316,7 @@ static const struct vm_operations_struct legacy_special_mapping_vmops = {
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.fault = special_mapping_fault,
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};
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static int special_mapping_fault(struct vm_fault *vmf)
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static vm_fault_t special_mapping_fault(struct vm_fault *vmf)
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{
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struct vm_area_struct *vma = vmf->vma;
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pgoff_t pgoff;
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