fs/dcache.c: avoid soft-lockup in dput()

[cascardo/linux.git] / mm / page_io.c

diff --git a/mm/page_io.c b/mm/page_io.c
index cd92e3d..242dba0 100644 (file)
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -279,7 +279,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
 
                set_page_writeback(page);
                unlock_page(page);
-               ret = mapping->a_ops->direct_IO(&kiocb, &from, kiocb.ki_pos);
+               ret = mapping->a_ops->direct_IO(&kiocb, &from);
                if (ret == PAGE_SIZE) {
                        count_vm_event(PSWPOUT);
                        ret = 0;
@@ -353,7 +353,11 @@ int swap_readpage(struct page *page)
 
        ret = bdev_read_page(sis->bdev, swap_page_sector(page), page);
        if (!ret) {
-               swap_slot_free_notify(page);
+               if (trylock_page(page)) {
+                       swap_slot_free_notify(page);
+                       unlock_page(page);
+               }
+
                count_vm_event(PSWPIN);
                return 0;
        }