Re: Super block locking

Regis Duchesne (
Mon, 10 Nov 1997 16:38:30 +0100 (CET)

> lock_super() and unlock_super() are used very heteregeneously in the
> different implementation of fs.
> Some fs (like isofs, minix) read/write super block fields (such as s_dev,
> s_op) _without_ taking the lock, while other always take the lock when
> accessing super block members.
Strangely, fs/super.c doesn't use super block locking in read_super() to
access s_dev, s_flags, s_rd_only, s_dirt, and s_type

So when should we use this lock?

Regis "HPReg" Duchesne - Engineering Student at ***** ******** *****
(O o) I use Linux & 3Com (1135 KB/s over 10Mb/s ethernet)