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authorAl Viro <viro@zeniv.linux.org.uk>2014-02-02 22:10:25 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-11-21 09:23:06 -0800
commit9fb77c771373c078f93807f077c29ebafe720a25 (patch)
tree77c8f6a254ab9da8ce5fdf5cf5e5d12cb15855a8 /mm/filemap.c
parent034c4b3e832b22ec83e7bd409cf1ad3efba18f45 (diff)
callers of iov_copy_from_user_atomic() don't need pagecache_disable()
commit 9e8c2af96e0d2d5fe298dd796fb6bc16e888a48d upstream. ... it does that itself (via kmap_atomic()) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index f287e2551f57..bdaa21555abe 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2188,7 +2188,6 @@ 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;
@@ -2562,9 +2561,7 @@ 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);