fuse: use clear_highpage() and KM_USER0 instead of KM_USER1

Commit 7909b1c640 ("fuse: don't use atomic kmap") removed KM_USER0 usage
from fuse/dev.c.  Switch KM_USER1 uses to KM_USER0 for clarity.  Also
replace open coded clear_highpage().

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 6903711..b986642 100644 (file)
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -809,11 +809,9 @@ static int fuse_copy_page(struct fuse_copy_state *cs, struct page **pagep,
        int err;
        struct page *page = *pagep;
 
-       if (page && zeroing && count < PAGE_SIZE) {
-               void *mapaddr = kmap_atomic(page, KM_USER1);
-               clear_page(mapaddr);
-               kunmap_atomic(mapaddr, KM_USER1);
-       }
+       if (page && zeroing && count < PAGE_SIZE)
+               clear_highpage(page);
+
        while (count) {
                if (cs->write && cs->pipebufs && page) {
                        return fuse_ref_page(cs, page, offset, count);
@@ -830,10 +828,10 @@ static int fuse_copy_page(struct fuse_copy_state *cs, struct page **pagep,
                        }
                }
                if (page) {
-                       void *mapaddr = kmap_atomic(page, KM_USER1);
+                       void *mapaddr = kmap_atomic(page, KM_USER0);
                        void *buf = mapaddr + offset;
                        offset += fuse_copy_do(cs, &buf, &count);
-                       kunmap_atomic(mapaddr, KM_USER1);
+                       kunmap_atomic(mapaddr, KM_USER0);
                } else
                        offset += fuse_copy_do(cs, NULL, &count);
        }