X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fproc%2Ftask_nommu.c;h=275dedc91337032ba59d4db108e05ae6c445e3bd;hb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;hp=126db9797262cfd1ff96f48452a96091fbde1ac5;hpb=a2c21200f1c81b08cb55e417b68150bba439b646;p=linux-2.6.git

diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 126db9797..275dedc91 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -68,11 +68,12 @@ unsigned long task_vsize(struct mm_struct *mm)
 	struct mm_tblock_struct *tbp;
 	unsigned long vsize = 0;
 
+	down_read(&mm->mmap_sem);
 	for (tbp = &mm->context.tblock; tbp; tbp = tbp->next) {
 		if (tbp->rblock)
 			vsize += kobjsize(tbp->rblock->kblock);
 	}
-
+	up_read(&mm->mmap_sem);
 	return vsize;
 }
 
@@ -81,7 +82,8 @@ int task_statm(struct mm_struct *mm, int *shared, int *text,
 {
 	struct mm_tblock_struct *tbp;
 	int size = kobjsize(mm);
-	
+
+	down_read(&mm->mmap_sem);
 	for (tbp = &mm->context.tblock; tbp; tbp = tbp->next) {
 		if (tbp->next)
 			size += kobjsize(tbp->next);
@@ -93,7 +95,7 @@ int task_statm(struct mm_struct *mm, int *shared, int *text,
 
 	size += (*text = mm->end_code - mm->start_code);
 	size += (*data = mm->start_stack - mm->start_data);
-
+	up_read(&mm->mmap_sem);
 	*resident = size;
 	return size;
 }