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authorHuang Ying <ying.huang@intel.com>2016-10-07 17:00:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-07 18:46:28 -0700
commit8cd797887ae0a73313ba248e027e59c0a597d693 (patch)
treeef50ba51023913699ea9a7c694a5e051d534affd
parentf6ab1f7f6b2d8e48c5fc47746a67363b20d79a1d (diff)
downloadlinux-8cd797887ae0a73313ba248e027e59c0a597d693.tar.bz2
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>
-rw-r--r--fs/nfs/internal.h6
-rw-r--r--fs/nfs/pagelist.c2
-rw-r--r--fs/nfs/read.c2
-rw-r--r--fs/nfs/write.c4
-rw-r--r--include/linux/mm.h12
-rw-r--r--include/linux/pagemap.h2
6 files changed, 8 insertions, 20 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 74935a19e4bf..da9e5584bfdc 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -681,11 +681,11 @@ unsigned int nfs_page_length(struct page *page)
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 174dd4cf5747..965db474f4b0 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -342,7 +342,7 @@ nfs_create_request(struct nfs_open_context *ctx, struct page *page,
* 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 572e5b3b06f1..defc9233e985 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -295,7 +295,7 @@ int nfs_readpage(struct file *file, struct page *page)
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 3a6724c6eb5f..53211838f72a 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -151,7 +151,7 @@ static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int c
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 @@ static int nfs_do_writepage(struct page *page, struct writeback_control *wbc,
{
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 028e84e2ab42..3e8807e0b9d2 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1061,18 +1061,6 @@ static inline pgoff_t page_index(struct page *page)
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 48d9cf04337c..794dbcb91084 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -408,7 +408,7 @@ static inline loff_t page_offset(struct page *page)
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,