[PATCH] do_generic_file_read(): Fail immediately if killed

[Bart Van Assche]

If a fatal signal has been received, fail immediately instead of
trying to read more data.
---
 mm/filemap.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 20f3b1f..6e46fb5 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1643,7 +1643,12 @@ find_page:
 			 * wait_on_page_locked is used to avoid unnecessarily
 			 * serialisations and why it's safe.
 			 */
-			wait_on_page_locked_killable(page);
+			error = wait_on_page_locked_killable(page);
+			if (error == -EINTR) {
+				put_page(page);
+				goto out;
+			}
+			error = 0;
 			if (PageUptodate(page))
 				goto page_ok;
 
-- 
2.9.2


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