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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-17 09:23:44 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-17 09:23:44 -0700
commitddf21bd8ab984ccaa924f090fc7f515bb6d51414 (patch)
treef8c598a24317040feffff465a2f43eb326d65ee2 /include/linux/serial_s3c.h
parent0bc7eb03cbd3e5d057cbe2ee15ddedf168f25a8d (diff)
parentb66ceaf324b394428bb47054140ddf03d8172e64 (diff)
Merge tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Pull io_uring iov_iter retry fixes from Jens Axboe: "This adds a helper to save/restore iov_iter state, and modifies io_uring to use it. After that is done, we can now kill the iter->truncated addition that we added for this release. The io_uring change is being overly cautious with the save/restore/advance, but better safe than sorry and we can always improve that and reduce the overhead if it proves to be of concern. The only case to be worried about in this regard is huge IO, where iteration can take a while to iterate segments. I spent some time writing test cases, and expanded the coverage quite a bit from the last posting of this. liburing carries this regression test case now: https://git.kernel.dk/cgit/liburing/tree/test/file-verify.c which exercises all of this. It now also supports provided buffers, and explicitly tests for end-of-file/device truncation as well. On top of that, Pavel sanitized the IOPOLL retry path to follow the exact same pattern as normal IO" * tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block: io_uring: move iopoll reissue into regular IO path Revert "iov_iter: track truncated size" io_uring: use iov_iter state save/restore helpers iov_iter: add helper to save iov_iter state
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