mm: remove page_file_index
After using the offset of the swap entry as the key of the swap cache,
the page_index() becomes exactly same as page_file_index(). So the
page_file_index() is removed and the callers are changed to use
page_index() instead.
Link: http://lkml.kernel.org/r/1473270649-27229-2-git-send-email-ying.huang@intel.com
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Cc: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 74935a1..da9e558 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -681,11 +681,11 @@
loff_t i_size = i_size_read(page_file_mapping(page)->host);
if (i_size > 0) {
- pgoff_t page_index = page_file_index(page);
+ pgoff_t index = page_index(page);
pgoff_t end_index = (i_size - 1) >> PAGE_SHIFT;
- if (page_index < end_index)
+ if (index < end_index)
return PAGE_SIZE;
- if (page_index == end_index)
+ if (index == end_index)
return ((i_size - 1) & ~PAGE_MASK) + 1;
}
return 0;
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index 174dd4c..965db47 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -342,7 +342,7 @@
* update_nfs_request below if the region is not locked. */
req->wb_page = page;
if (page) {
- req->wb_index = page_file_index(page);
+ req->wb_index = page_index(page);
get_page(page);
}
req->wb_offset = offset;
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 572e5b3..defc923 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -295,7 +295,7 @@
int error;
dprintk("NFS: nfs_readpage (%p %ld@%lu)\n",
- page, PAGE_SIZE, page_file_index(page));
+ page, PAGE_SIZE, page_index(page));
nfs_inc_stats(inode, NFSIOS_VFSREADPAGE);
nfs_add_stats(inode, NFSIOS_READPAGES, 1);
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 3a6724c..5321183 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -151,7 +151,7 @@
spin_lock(&inode->i_lock);
i_size = i_size_read(inode);
end_index = (i_size - 1) >> PAGE_SHIFT;
- if (i_size > 0 && page_file_index(page) < end_index)
+ if (i_size > 0 && page_index(page) < end_index)
goto out;
end = page_file_offset(page) + ((loff_t)offset+count);
if (i_size >= end)
@@ -603,7 +603,7 @@
{
int ret;
- nfs_pageio_cond_complete(pgio, page_file_index(page));
+ nfs_pageio_cond_complete(pgio, page_index(page));
ret = nfs_page_async_flush(pgio, page, wbc->sync_mode == WB_SYNC_NONE,
launder);
if (ret == -EAGAIN) {
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 028e84e..3e8807e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1061,18 +1061,6 @@
return page->index;
}
-/*
- * Return the file index of the page. Regular pagecache pages use ->index
- * whereas swapcache pages use swp_offset(->private)
- */
-static inline pgoff_t page_file_index(struct page *page)
-{
- if (unlikely(PageSwapCache(page)))
- return __page_file_index(page);
-
- return page->index;
-}
-
bool page_mapped(struct page *page);
struct address_space *page_mapping(struct page *page);
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 48d9cf0..794dbcb 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -408,7 +408,7 @@
static inline loff_t page_file_offset(struct page *page)
{
- return ((loff_t)page_file_index(page)) << PAGE_SHIFT;
+ return ((loff_t)page_index(page)) << PAGE_SHIFT;
}
extern pgoff_t linear_hugepage_index(struct vm_area_struct *vma,