linux-kernel - [PATCH 1/4] fs: add OOM badness callback in file

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Date:   Thu, 18 Jan 2018 11:47:49 -0500
From:   Andrey Grodzovsky <andrey.grodzovsky@....com>
To:     <linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
        <dri-devel@...ts.freedesktop.org>, <amd-gfx@...ts.freedesktop.org>
CC:     <Christian.Koenig@....com>,
        Andrey Grodzovsky <andrey.grodzovsky@....com>
Subject: [PATCH 1/4] fs: add OOM badness callback in file_operatrations struct.

This allows device drivers to specify an additional badness for the OOM
when they allocate memory on behalf of userspace.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@....com>
---
 include/linux/fs.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 511fbaa..938394a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1728,6 +1728,7 @@ struct file_operations {
 			u64);
 	ssize_t (*dedupe_file_range)(struct file *, u64, u64, struct file *,
 			u64);
+	long (*oom_file_badness)(struct file *);
 } __randomize_layout;
 
 struct inode_operations {
-- 
2.7.4