linux-kernel - [patch] exofs: confusion between kmap() and kmap

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Date:	Fri, 7 May 2010 11:05:33 +0200
From:	Dan Carpenter <error27@...il.com>
To:	Boaz Harrosh <bharrosh@...asas.com>
Cc:	Benny Halevy <bhalevy@...asas.com>,
	Avishay Traeger <avishay@...il.com>, osd-dev@...n-osd.org,
	linux-kernel@...r.kernel.org
Subject: [patch] exofs: confusion between kmap() and kmap_atomic() api

For kmap_atomic() we call kunmap_atomic() on the returned pointer.
That's different from kmap() and kunmap() and so it's easy to get them
backwards.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/fs/exofs/dir.c b/fs/exofs/dir.c
index 4cfab1c..d91e9d8 100644
--- a/fs/exofs/dir.c
+++ b/fs/exofs/dir.c
@@ -608,7 +608,7 @@ int exofs_make_empty(struct inode *inode, struct inode *parent)
 	de->inode_no = cpu_to_le64(parent->i_ino);
 	memcpy(de->name, PARENT_DIR, sizeof(PARENT_DIR));
 	exofs_set_de_type(de, inode);
-	kunmap_atomic(page, KM_USER0);
+	kunmap_atomic(kaddr, KM_USER0);
 	err = exofs_commit_chunk(page, 0, chunk_size);
 fail:
 	page_cache_release(page);
--
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