linux-next: build failure after merge of the akpm-current tree

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Hi Andrew,

After merging the akpm-current tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

fs/io_uring.c: In function 'io_async_list_note':
fs/io_uring.c:931:16: error: 'VM_MAX_READAHEAD' undeclared (first use in this function); did you mean 'VM_MAYREAD'?
    max_pages = VM_MAX_READAHEAD >> (PAGE_SHIFT - 10);
                ^~~~~~~~~~~~~~~~
                VM_MAYREAD

Caused by commit

  4c416502dae2 ("mm: Refactor readahead defines in mm.h")

interacting with commit

  6eff5fa16a2e ("io_uring: allow workqueue item to handle multiple buffered requests")

from the block tree.

I have applied this merge fix patch for today:

From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date: Wed, 13 Feb 2019 17:21:44 +1100
Subject: [PATCH] io_uring: fix up for readahead defines refactor

Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
 fs/io_uring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 1ff4acc9654d..c8272bc96d84 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -928,7 +928,7 @@ static void io_async_list_note(int rw, struct io_kiocb *req, size_t len)
 		/* Use 8x RA size as a decent limiter for both reads/writes */
 		max_pages = filp->f_ra.ra_pages;
 		if (!max_pages)
-			max_pages = VM_MAX_READAHEAD >> (PAGE_SHIFT - 10);
+			max_pages = VM_READAHEAD_PAGES;
 		max_pages *= 8;
 
 		/* If max pages are exceeded, reset the state */
-- 
2.20.1

-- 
Cheers,
Stephen Rothwell

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