[PATCH] tmpfs 5/6 use cond_resched

[Hugh Dickins]

cond_resched each time around the loop in shmem_file_write
and do_shmem_file_read, matching filemap.c.

--- tmpfs4/mm/shmem.c	Tue Apr  1 21:35:21 2003
+++ tmpfs5/mm/shmem.c	Tue Apr  1 21:35:32 2003
@@ -1211,6 +1211,8 @@
 		buf += bytes;
 		if (pos > inode->i_size)
 			inode->i_size = pos;
+
+		cond_resched();
 	} while (count);
 
 	*ppos = pos;
@@ -1302,6 +1304,8 @@
 		page_cache_release(page);
 		if (ret != nr || !desc->count)
 			break;
+
+		cond_resched();
 	}
 
 	*ppos = ((loff_t) index << PAGE_CACHE_SHIFT) + offset;