Messages in this thread | | | Date | Sat, 20 Jul 2019 00:23:08 +0100 | From | Al Viro <> | Subject | Re: [PATCH 2/4] ceph: fix buffer free while holding i_ceph_lock in __ceph_setxattr() |
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On Fri, Jul 19, 2019 at 07:07:49PM -0400, Jeff Layton wrote:
> Al pointed out on IRC that vfree should be callable under spinlock.
Al had been near-terminally low on caffeine at the time, posted a retraction a few minutes later and went to grab some coffee...
> It > only sleeps if !in_interrupt(), and I think that should return true if > we're holding a spinlock.
It can be used from RCU callbacks and all such; it *can't* be used from under spinlock - on non-preempt builds there's no way to recognize that.
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