Messages in this thread | | | Date | Wed, 12 Dec 2012 09:53:28 +0000 | From | "Jan Beulich" <> | Subject | Re: [PATCH] xen/blkback: prevent repeated backend_changed invocations |
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>>> On 12.12.12 at 10:47, Olaf Hering <olaf@aepfle.de> wrote: > On Wed, Dec 12, Jan Beulich wrote: > >> >>> On 11.12.12 at 21:50, Olaf Hering <olaf@aepfle.de> wrote: >> > backend_changed might be called multiple times, which will leak >> > be->mode. Make sure it will be called only once. Remove some unneeded >> > checks. Also the be->mode string was leaked, release the memory on >> > device shutdown. >> >> So did I miss some discussion here? I haven't seen any >> confirmation of this function indeed being supposed to be called >> just once. >> >> Also, as said previously, if indeed it is to be called just once, >> removing the watch during/after the first invocation would seem >> to be the more appropriate thing to do. > > Does the API allow this, that the called function can disable the watch?
That is what would need looking into (and why I said "during/after").
Jan
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