mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf
->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
take a vma and vmf parameter when the vma already resides in vmf.
Remove the vma parameter to simplify things.
[arnd@arndb.de: fix ARM build]
Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/mmap.c b/mm/mmap.c
index b729084..1cd7001 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -3125,8 +3125,7 @@ void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages)
mm->data_vm += npages;
}
-static int special_mapping_fault(struct vm_area_struct *vma,
- struct vm_fault *vmf);
+static int special_mapping_fault(struct vm_fault *vmf);
/*
* Having a close hook prevents vma merging regardless of flags.
@@ -3161,9 +3160,9 @@ static const struct vm_operations_struct legacy_special_mapping_vmops = {
.fault = special_mapping_fault,
};
-static int special_mapping_fault(struct vm_area_struct *vma,
- struct vm_fault *vmf)
+static int special_mapping_fault(struct vm_fault *vmf)
{
+ struct vm_area_struct *vma = vmf->vma;
pgoff_t pgoff;
struct page **pages;
@@ -3173,7 +3172,7 @@ static int special_mapping_fault(struct vm_area_struct *vma,
struct vm_special_mapping *sm = vma->vm_private_data;
if (sm->fault)
- return sm->fault(sm, vma, vmf);
+ return sm->fault(sm, vmf->vma, vmf);
pages = sm->pages;
}