Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 3 Aug 2022 16:42:43 -0700 | Subject | Re: [git pull] vfs.git pile 3 - dcache |
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On Wed, Aug 3, 2022 at 4:24 PM Matthew Wilcox <willy@infradead.org> wrote: > > On Wed, Aug 03, 2022 at 06:59:36PM -0400, Steven Rostedt wrote: > > > > preempt_disable_inlock() ? > > preempt_disable_locked()?
Heh. Shed painting in full glory.
Let's try just "preempt_enable_under_spinlock()" and see.
It's a bit long, but it's still shorter than the existing usage pattern.
And we don't have "inlock" anywhere else, and while "locked" is a real pattern we have, it tends to be about other things (ie "I hold the lock that you need, so don't take it").
And this is _explicitly_ only about spinning locks, because sleeping locks don't do the preemption disable even without RT.
So let's make it verbose and clear and unambiguous. It's not like I expect to see a _lot_ of those. Knock wood.
We had a handful of those things before (in mm/vmstat, and now added another case to the dentry code. So it has become a pattern, but I really really hope it's not exactly a common pattern.
And so because it's not common, typing a bit more is a good idea - and making it really clear is probably also a good idea.
Linus
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