callers of iov_copy_from_user_atomic() don't need pagecache_disable()

... it does that itself (via kmap_atomic())

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 3 deletions

diff --git a/mm/filemap.c b/mm/filemap.c
index 46e98019af6c..bfb7a97d6d0f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1974,7 +1974,6 @@ size_t iov_iter_copy_from_user_atomic(struct page *page,
         char *kaddr;
         size_t copied;
 
-        BUG_ON(!in_atomic());
         kaddr = kmap_atomic(page);
         if (likely(i->nr_segs == 1)) {
                 int left;
@@ -2348,9 +2347,7 @@ again:
                 if (mapping_writably_mapped(mapping))
                         flush_dcache_page(page);
 
-                pagefault_disable();
                 copied = iov_iter_copy_from_user_atomic(page, i, offset, bytes);
-                pagefault_enable();
                 flush_dcache_page(page);
 
                 mark_page_accessed(page);