Re: locking in sync_old_buffers

From: Alexander Viro (viro@math.psu.edu)
Date: Mon Apr 22 2002 - 20:31:54 EST


On Mon, 22 Apr 2002, Andrew Morton wrote:

> Al would know better than I, but...
>
> If you're going to do this, then the BKL should be acquired
> in fs/super.c:write_super(), so the per-fs ->write_super
> functions do not see changed external locking rules.

Definitely.
 
> Possibly, fs/inode.c:write_inode() needs the same treatment.
> But Doc/filesystems/Locking says that lock_kernel() is not
> held across ->write_inode so there should be no need to take
> it on the kupdate path.

It isn't - it had been shifted into the instances back in 2.3.

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