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/fs/dax.c b/fs/dax.c
index 3f11815..f955c0d 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -925,12 +925,11 @@
/**
* dax_pfn_mkwrite - handle first write to DAX page
- * @vma: The virtual memory area where the fault occurred
* @vmf: The description of the fault
*/
-int dax_pfn_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
+int dax_pfn_mkwrite(struct vm_fault *vmf)
{
- struct file *file = vma->vm_file;
+ struct file *file = vmf->vma->vm_file;
struct address_space *mapping = file->f_mapping;
void *entry, **slot;
pgoff_t index = vmf->pgoff;
@@ -1121,7 +1120,6 @@
/**
* dax_iomap_fault - handle a page fault on a DAX file
- * @vma: The virtual memory area where the fault occurred
* @vmf: The description of the fault
* @ops: iomap ops passed from the file system
*
@@ -1129,10 +1127,9 @@
* or mkwrite handler for DAX files. Assumes the caller has done all the
* necessary locking for the page fault to proceed successfully.
*/
-int dax_iomap_fault(struct vm_area_struct *vma, struct vm_fault *vmf,
- const struct iomap_ops *ops)
+int dax_iomap_fault(struct vm_fault *vmf, const struct iomap_ops *ops)
{
- struct address_space *mapping = vma->vm_file->f_mapping;
+ struct address_space *mapping = vmf->vma->vm_file->f_mapping;
struct inode *inode = mapping->host;
unsigned long vaddr = vmf->address;
loff_t pos = (loff_t)vmf->pgoff << PAGE_SHIFT;
@@ -1205,11 +1202,11 @@
case IOMAP_MAPPED:
if (iomap.flags & IOMAP_F_NEW) {
count_vm_event(PGMAJFAULT);
- mem_cgroup_count_vm_event(vma->vm_mm, PGMAJFAULT);
+ mem_cgroup_count_vm_event(vmf->vma->vm_mm, PGMAJFAULT);
major = VM_FAULT_MAJOR;
}
error = dax_insert_mapping(mapping, iomap.bdev, sector,
- PAGE_SIZE, &entry, vma, vmf);
+ PAGE_SIZE, &entry, vmf->vma, vmf);
/* -EBUSY is fine, somebody else faulted on the same PTE */
if (error == -EBUSY)
error = 0;