From: Kanchan Joshi <joshi.k@samsung.com> To: axboe@kernel.dk, viro@zeniv.linux.org.uk, bcrl@kvack.org Cc: willy@infradead.org, hch@infradead.org, Damien.LeMoal@wdc.com, asml.silence@gmail.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-aio@kvack.org, io-uring@vger.kernel.org, linux-block@vger.kernel.org, linux-api@vger.kernel.org, SelvaKumar S <selvakuma.s1@samsung.com>, Kanchan Joshi <joshi.k@samsung.com>, Nitesh Shetty <nj.shetty@samsung.com>, Javier Gonzalez <javier.gonz@samsung.com> Subject: [PATCH v4 3/6] uio: return status with iov truncation Date: Fri, 24 Jul 2020 21:19:19 +0530 Message-ID: <1595605762-17010-4-git-send-email-joshi.k@samsung.com> (raw) In-Reply-To: <1595605762-17010-1-git-send-email-joshi.k@samsung.com> From: SelvaKumar S <selvakuma.s1@samsung.com> Make iov_iter_truncate to report whether it actually truncated. This helps callers which want to process the iov_iter in its entirety. Signed-off-by: SelvaKumar S <selvakuma.s1@samsung.com> Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> Signed-off-by: Nitesh Shetty <nj.shetty@samsung.com> Signed-off-by: Javier Gonzalez <javier.gonz@samsung.com> --- include/linux/uio.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/include/linux/uio.h b/include/linux/uio.h index 9576fd8..c681a60 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -241,7 +241,7 @@ static inline size_t iov_iter_count(const struct iov_iter *i) * greater than the amount of data in iov_iter is fine - it'll just do * nothing in that case. */ -static inline void iov_iter_truncate(struct iov_iter *i, u64 count) +static inline bool iov_iter_truncate(struct iov_iter *i, u64 count) { /* * count doesn't have to fit in size_t - comparison extends both @@ -249,8 +249,11 @@ static inline void iov_iter_truncate(struct iov_iter *i, u64 count) * conversion in assignement is by definition greater than all * values of size_t, including old i->count. */ - if (i->count > count) + if (i->count > count) { i->count = count; + return true; + } + return false; } /* -- 2.7.4
next prev parent reply index Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20200724155244epcas5p2902f57e36e490ee8772da19aa9408cdc@epcas5p2.samsung.com> 2020-07-24 15:49 ` [PATCH v4 0/6] zone-append support in io-uring and aio Kanchan Joshi [not found] ` <CGME20200724155258epcas5p1a75b926950a18cd1e6c8e7a047e6c589@epcas5p1.samsung.com> 2020-07-24 15:49 ` [PATCH v4 1/6] fs: introduce FMODE_ZONE_APPEND and IOCB_ZONE_APPEND Kanchan Joshi 2020-07-24 16:34 ` Jens Axboe 2020-07-26 15:18 ` Christoph Hellwig 2020-07-28 1:49 ` Matthew Wilcox 2020-07-28 7:26 ` Christoph Hellwig [not found] ` <CGME20200724155324epcas5p18e1d3b4402d1e4a8eca87d0b56a3fa9b@epcas5p1.samsung.com> 2020-07-24 15:49 ` [PATCH v4 2/6] fs: change ki_complete interface to support 64bit ret2 Kanchan Joshi 2020-07-26 15:18 ` Christoph Hellwig [not found] ` <CGME20200724155329epcas5p345ba6bad0b8fe18056bb4bcd26c10019@epcas5p3.samsung.com> 2020-07-24 15:49 ` Kanchan Joshi [this message] [not found] ` <CGME20200724155341epcas5p15bfc55927f2abb60f19784270fe8e377@epcas5p1.samsung.com> 2020-07-24 15:49 ` [PATCH v4 4/6] block: add zone append handling for direct I/O path Kanchan Joshi 2020-07-26 15:19 ` Christoph Hellwig [not found] ` <CGME20200724155346epcas5p2cfb383fe9904a45280c6145f4c13e1b4@epcas5p2.samsung.com> 2020-07-24 15:49 ` [PATCH v4 5/6] block: enable zone-append for iov_iter of bvec type Kanchan Joshi 2020-07-26 15:20 ` Christoph Hellwig [not found] ` <CGME20200724155350epcas5p3b8f1d59eda7f8fbb38c828f692d42fd6@epcas5p3.samsung.com> 2020-07-24 15:49 ` [PATCH v4 6/6] io_uring: add support for zone-append Kanchan Joshi 2020-07-24 16:29 ` Jens Axboe 2020-07-27 19:16 ` Kanchan Joshi 2020-07-27 20:34 ` Jens Axboe 2020-07-30 16:08 ` Pavel Begunkov 2020-07-30 16:13 ` Jens Axboe 2020-07-30 16:26 ` Pavel Begunkov 2020-07-30 17:16 ` Jens Axboe 2020-07-30 17:38 ` Pavel Begunkov 2020-07-30 17:51 ` Kanchan Joshi 2020-07-30 17:54 ` Jens Axboe 2020-07-30 18:25 ` Kanchan Joshi 2020-07-31 6:42 ` Damien Le Moal 2020-07-31 6:45 ` hch 2020-07-31 6:59 ` Damien Le Moal 2020-07-31 7:58 ` Kanchan Joshi 2020-07-31 8:14 ` Damien Le Moal 2020-07-31 9:14 ` hch 2020-07-31 9:34 ` Damien Le Moal 2020-07-31 9:41 ` hch 2020-07-31 10:16 ` Damien Le Moal 2020-07-31 12:51 ` hch 2020-07-31 13:08 ` hch 2020-07-31 15:07 ` Kanchan Joshi 2020-08-05 7:35 ` Damien Le Moal 2020-08-14 8:14 ` hch 2020-08-14 8:27 ` Damien Le Moal 2020-08-14 12:04 ` hch 2020-08-14 12:20 ` Damien Le Moal 2020-09-07 7:01 ` Kanchan Joshi 2020-09-08 15:18 ` hch 2020-09-24 17:19 ` Kanchan Joshi 2020-09-25 2:52 ` Damien Le Moal 2020-09-28 18:58 ` Kanchan Joshi 2020-09-29 1:24 ` Damien Le Moal 2020-09-29 18:49 ` Kanchan Joshi 2020-07-31 9:38 ` Kanchan Joshi 2020-07-31 7:08 ` Kanchan Joshi 2020-07-30 15:57 ` Pavel Begunkov
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