linux-kernel - [patch 1/2] fuse: generic_write_checks() for direct

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Message-Id: <E1Hozmu-0003qO-00@dorka.pomaz.szeredi.hu>
Date:	Fri, 18 May 2007 12:34:20 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	akpm@...ux-foundation.org
CC:	linux-kernel@...r.kernel.org
Subject: [patch 1/2] fuse: generic_write_checks() for direct_io

Andrew,

These are for 2.6.22, please apply.

Thanks.

----
From: Miklos Szeredi <mszeredi@...e.cz>

This fixes O_APPEND in direct IO mode.  Also checks writes against
file size limits, notably rlimits.

Reported by Greg Bruno.

Signed-off-by: Miklos Szeredi <mszeredi@...e.cz>
---

Index: linux/fs/fuse/file.c
===================================================================
--- linux.orig/fs/fuse/file.c	2007-04-26 12:54:32.000000000 +0200
+++ linux/fs/fuse/file.c	2007-05-02 20:17:27.000000000 +0200
@@ -609,7 +609,9 @@ static ssize_t fuse_direct_write(struct 
 	ssize_t res;
 	/* Don't allow parallel writes to the same file */
 	mutex_lock(&inode->i_mutex);
-	res = fuse_direct_io(file, buf, count, ppos, 1);
+	res = generic_write_checks(file, ppos, &count, 0);
+	if (!res)
+		res = fuse_direct_io(file, buf, count, ppos, 1);
 	mutex_unlock(&inode->i_mutex);
 	return res;
 }
-
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