Messages in this thread | | | From | Linus Torvalds <> | Date | Wed, 4 Sep 2019 14:36:48 -0700 | Subject | Re: [PATCH v12 10/12] namei: aggressively check for nd->root escape on ".." resolution |
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On Wed, Sep 4, 2019 at 2:35 PM Linus Torvalds <torvalds@linux-foundation.org> wrote: > > On Wed, Sep 4, 2019 at 2:09 PM Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > So you'd have three stages: > > > > 1) ".." always returns -EXDEV > > > > 2) ".." returns -EXDEV if there was a concurrent rename/mount > > > > 3) ".." returns -EXDEV if there was a concurrent rename/mount and we > > reset the sequence numbers and check if you escaped. > > In fact, I wonder if this should return -EAGAIN instead - to say that > "retrying may work".
And here "this" was meant to be "case 2" - I was moving the quoted text around and didn't fix my wording, so now it is ambiguous or implies #3, which would be crazy.
Sorry for the confusion,
Linus
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