Fetch a folio from the page cache instead of a page and operate on it.
Take advantage of the new helpers to avoid handling highmem ourselves,
and combine the uptodate + unlock operations into folio_end_read().
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
fs/ntfs3/attrib.c | 26 ++++++++++++--------------
1 file changed, 12 insertions(+), 14 deletions(-)
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c
index 02fa3245850a..d253840c26cf 100644
--- a/fs/ntfs3/attrib.c
+++ b/fs/ntfs3/attrib.c
@@ -302,22 +302,20 @@ int attr_make_nonresident(struct ntfs_inode *ni, struct ATTRIB *attr,
if (err)
goto out2;
} else if (!page) {
- char *kaddr;
-
- page = grab_cache_page(ni->vfs_inode.i_mapping, 0);
- if (!page) {
- err = -ENOMEM;
+ struct address_space *mapping = ni->vfs_inode.i_mapping;
+ struct folio *folio;
+
+ folio = __filemap_get_folio(mapping, 0,
+ FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
+ mapping_gfp_mask(mapping));
+ if (IS_ERR(folio)) {
+ err = PTR_ERR(folio);
goto out2;
}
- kaddr = kmap_atomic(page);
- memcpy(kaddr, data, rsize);
- memset(kaddr + rsize, 0, PAGE_SIZE - rsize);
- kunmap_atomic(kaddr);
- flush_dcache_page(page);
- SetPageUptodate(page);
- set_page_dirty(page);
- unlock_page(page);
- put_page(page);
+ folio_fill_tail(folio, 0, data, rsize);
+ folio_mark_dirty(folio);
+ folio_end_read(folio, true);
+ folio_put(folio);
}
}
--
2.43.0
