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From: Goldwyn Rodrigues <rgoldwyn@suse.de>
To: linux-fsdevel@vger.kernel.org
Cc: jack@suse.com, hch@infradead.org, linux-block@vger.kernel.org,
	linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org,
	linux-xfs@vger.kernel.org, sagi@grimberg.me, avi@scylladb.com,
	axboe@kernel.dk, linux-api@vger.kernel.org, willy@infradead.org,
	tom.leiming@gmail.com, Goldwyn Rodrigues <rgoldwyn@suse.com>
Subject: [PATCH 4/8] nowait-aio: Introduce IOMAP_NOWAIT
Date: Mon,  3 Apr 2017 13:53:03 -0500	[thread overview]
Message-ID: <20170403185307.6243-5-rgoldwyn@suse.de> (raw)
In-Reply-To: <20170403185307.6243-1-rgoldwyn@suse.de>

From: Goldwyn Rodrigues <rgoldwyn@suse.com>

IOCB_NOWAIT translates to IOMAP_NOWAIT for iomaps.
This is used by XFS in the XFS patch.
---
 fs/iomap.c            | 2 ++
 include/linux/iomap.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/fs/iomap.c b/fs/iomap.c
index 141c3cd..d1c8175 100644
--- a/fs/iomap.c
+++ b/fs/iomap.c
@@ -885,6 +885,8 @@ iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
 	} else {
 		dio->flags |= IOMAP_DIO_WRITE;
 		flags |= IOMAP_WRITE;
+		if (iocb->ki_flags & IOCB_NOWAIT)
+			flags |= IOMAP_NOWAIT;
 	}
 
 	if (mapping->nrpages) {
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index 7291810..53f6af8 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -51,6 +51,7 @@ struct iomap {
 #define IOMAP_REPORT		(1 << 2) /* report extent status, e.g. FIEMAP */
 #define IOMAP_FAULT		(1 << 3) /* mapping for page fault */
 #define IOMAP_DIRECT		(1 << 4) /* direct I/O */
+#define IOMAP_NOWAIT		(1 << 5) /* Don't wait for writeback */
 
 struct iomap_ops {
 	/*
-- 
2.10.2


  parent reply	other threads:[~2017-04-03 18:53 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-03 18:52 [PATCH 0/8 v4] No wait AIO Goldwyn Rodrigues
     [not found] ` <20170403185307.6243-1-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-03 18:53   ` [PATCH 1/8] nowait aio: Introduce IOCB_RW_FLAG_NOWAIT Goldwyn Rodrigues
2017-04-04  6:48     ` Christoph Hellwig
2017-04-03 18:53   ` [PATCH 8/8] nowait aio: btrfs Goldwyn Rodrigues
2017-04-03 18:53 ` [PATCH 2/8] nowait aio: Return if cannot get hold of i_rwsem Goldwyn Rodrigues
2017-04-03 18:53 ` [PATCH 3/8] nowait aio: return if direct write will trigger writeback Goldwyn Rodrigues
2017-04-03 18:53 ` Goldwyn Rodrigues [this message]
2017-04-03 18:53 ` [PATCH 5/8] nowait aio: return on congested block device Goldwyn Rodrigues
2017-04-04  6:49   ` Christoph Hellwig
2017-04-03 18:53 ` [PATCH 6/8] nowait aio: ext4 Goldwyn Rodrigues
2017-04-04  7:58   ` Jan Kara
2017-04-04  8:41     ` Christoph Hellwig
2017-04-04 18:41       ` Goldwyn Rodrigues
2017-04-10  7:45         ` Christoph Hellwig
     [not found]           ` <20170410074539.GA18250-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2017-04-10 12:37             ` Jan Kara
2017-04-10 14:39               ` Christoph Hellwig
2017-04-10 15:13                 ` Jan Kara
2017-04-03 18:53 ` [PATCH 7/8] nowait aio: xfs Goldwyn Rodrigues
2017-04-04  6:52   ` Christoph Hellwig
     [not found]     ` <20170404065211.GD21942-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2017-04-06 22:54       ` Darrick J. Wong
2017-04-07 11:34         ` Goldwyn Rodrigues
2017-04-07 15:08           ` Darrick J. Wong
  -- strict thread matches above, loose matches on Subject: below --
2017-05-09 12:22 [PATCH 0/8 v7] No wait AIO Goldwyn Rodrigues
2017-05-09 12:22 ` [PATCH 4/8] nowait-aio: Introduce IOMAP_NOWAIT Goldwyn Rodrigues
2017-04-14 12:02 [PATCH 0/8 v6] No wait AIO Goldwyn Rodrigues
2017-04-14 12:02 ` [PATCH 4/8] nowait-aio: Introduce IOMAP_NOWAIT Goldwyn Rodrigues
2017-04-19  6:39   ` Christoph Hellwig
     [not found]   ` <20170414120257.8932-5-rgoldwyn-l3A5Bk7waGM@public.gmane.org>
2017-04-19  7:12     ` Jan Kara
2017-03-15 21:50 [PATCH 0/8 v3] No wait AIO Goldwyn Rodrigues
2017-03-15 21:51 ` [PATCH 4/8] nowait-aio: Introduce IOMAP_NOWAIT Goldwyn Rodrigues

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