Author: kevlo
Date: Fri Apr 1 03:21:01 2016
New Revision: 297479
URL: https://svnweb.freebsd.org/changeset/base/297479
Log:
Update comment: Linux does set a randomized generation number of an inode
on ext2/3/4.
While here use arc4random() instead of random().
Reviewed by: pfg
MFC after: 3 days
Modified:
head/sys/fs/ext2fs/ext2_alloc.c
Modified: head/sys/fs/ext2fs/ext2_alloc.c
==============================================================================
--- head/sys/fs/ext2fs/ext2_alloc.c Fri Apr 1 01:39:44 2016
(r297478)
+++ head/sys/fs/ext2fs/ext2_alloc.c Fri Apr 1 03:21:01 2016
(r297479)
@@ -406,10 +406,8 @@ ext2_valloc(struct vnode *pvp, int mode,
/*
* Set up a new generation number for this inode.
- * XXX check if this makes sense in ext2
*/
- if (ip->i_gen == 0 || ++ip->i_gen == 0)
- ip->i_gen = random() / 2 + 1;
+ ip->i_gen = arc4random();
vfs_timestamp(&ts);
ip->i_birthtime = ts.tv_sec;
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