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From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 11/12] mm: add kiocb_wait_page_queue_init() helper
Date: Sat, 23 May 2020 12:57:54 -0600 [thread overview]
Message-ID: <20200523185755.8494-12-axboe@kernel.dk> (raw)
In-Reply-To: <20200523185755.8494-1-axboe@kernel.dk>
Checks if the file supports it, and initializes the values that we need.
Caller passes in 'data' pointer, if any, and the callback function to
be used.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
include/linux/pagemap.h | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index d3e63c9c61ae..def58de92053 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -493,6 +493,24 @@ static inline int wake_page_match(struct wait_page_queue *wait_page,
return 1;
}
+static inline int kiocb_wait_page_queue_init(struct kiocb *kiocb,
+ struct wait_page_queue *wait,
+ wait_queue_func_t func,
+ void *data)
+{
+ if (kiocb->ki_filp->f_mode & FMODE_BUF_RASYNC) {
+ wait->wait.func = func;
+ wait->wait.private = data;
+ wait->wait.flags = 0;
+ INIT_LIST_HEAD(&wait->wait.entry);
+ kiocb->ki_flags |= IOCB_WAITQ;
+ kiocb->private = wait;
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
extern void __lock_page(struct page *page);
extern int __lock_page_killable(struct page *page);
extern int __lock_page_async(struct page *page, struct wait_page_queue *wait);
--
2.26.2
next prev parent reply other threads:[~2020-05-23 18:58 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-23 18:57 [PATCHSET v2 0/12] Add support for async buffered reads Jens Axboe
2020-05-23 18:57 ` [PATCH 01/12] block: read-ahead submission should imply no-wait as well Jens Axboe
2020-05-23 18:57 ` [PATCH 02/12] mm: allow read-ahead with IOCB_NOWAIT set Jens Axboe
2020-05-23 18:57 ` [PATCH 03/12] mm: abstract out wake_page_match() from wake_page_function() Jens Axboe
2020-05-23 18:57 ` [PATCH 04/12] mm: add support for async page locking Jens Axboe
2020-05-23 18:57 ` [PATCH 05/12] mm: support async buffered reads in generic_file_buffered_read() Jens Axboe
2020-05-24 14:05 ` Trond Myklebust
2020-05-24 16:30 ` Jens Axboe
2020-05-24 16:40 ` Jens Axboe
2020-05-24 17:11 ` Trond Myklebust
2020-05-24 17:12 ` Jens Axboe
2020-05-23 18:57 ` [PATCH 06/12] fs: add FMODE_BUF_RASYNC Jens Axboe
2020-05-23 18:57 ` [PATCH 07/12] ext4: flag as supporting buffered async reads Jens Axboe
2020-05-23 18:57 ` [PATCH 08/12] block: flag block devices as supporting IOCB_WAITQ Jens Axboe
2020-05-23 18:57 ` [PATCH 09/12] xfs: flag files as supporting buffered async reads Jens Axboe
2020-05-23 18:57 ` [PATCH 10/12] btrfs: " Jens Axboe
2020-05-23 18:57 ` Jens Axboe [this message]
2020-05-23 18:57 ` [PATCH 12/12] io_uring: support true async buffered reads, if file provides it Jens Axboe
2020-05-25 7:29 ` Pavel Begunkov
2020-05-25 19:59 ` Jens Axboe
2020-05-26 7:44 ` Pavel Begunkov
2020-05-26 13:50 ` Jens Axboe
2020-05-26 7:38 ` Pavel Begunkov
2020-05-26 13:47 ` Jens Axboe
2020-05-23 19:20 ` [PATCHSET v2 0/12] Add support for async buffered reads Jens Axboe
2020-05-24 9:46 ` Chris Panayis
2020-05-24 19:24 ` Jens Axboe
2020-05-24 19:21 [PATCHSET v4 " Jens Axboe
2020-05-24 19:22 ` [PATCH 11/12] mm: add kiocb_wait_page_queue_init() helper Jens Axboe
2020-05-26 19:51 [PATCHSET v5 0/12] Add support for async buffered reads Jens Axboe
2020-05-26 19:51 ` [PATCH 11/12] mm: add kiocb_wait_page_queue_init() helper Jens Axboe
2020-05-26 22:01 ` Johannes Weiner
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