[PATCH] freepgt: sys_mincore ignore FIRST_USER_PGD_NR

Remove use of FIRST_USER_PGD_NR from sys_mincore: it's inconsistent (no other syscall refers to it), unnecessary (sys_mincore loops over vmas further down) and incorrect (misses user addresses in ARM's first pgd). Signed-off-by: Hugh Dickins <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Apr 19, 2005 · 8462e20 · 8462e20
1 parent e2cdef8
commit 8462e20
Showing 1 changed file with 0 additions and 3 deletions.
diff --git a/mm/mincore.c b/mm/mincore.c
@@ -118,9 +118,6 @@ asmlinkage long sys_mincore(unsigned long start, size_t len,
  	if (start & ~PAGE_CACHE_MASK)
 		goto einval;
 
-	if (start < FIRST_USER_PGD_NR * PGDIR_SIZE)
-		goto enomem;
-
 	limit = TASK_SIZE;
 	if (start >= limit)
 		goto enomem;