Messages in this thread | | | From | David Howells <> | Subject | Re: [PATCH 2/2] mm: Make swap_readpage() for SWP_FS_OPS use ->direct_IO() not ->readpage() | Date | Thu, 12 Aug 2021 15:16:31 +0100 |
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Matthew Wilcox <willy@infradead.org> wrote:
> This is a read, not a write ... but we don't care about ki_pos being > updated, so that store can be conditioned on IOCB_SWAP being clear. > Or instead of storing directly to ki_pos, we take a pointer to ki_pos > and then redirect that pointer somewhere harmless.
But see also ext4_dio_read_iter(), for example. That touches ki_filp after starting the op.
David
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