linux-kernel - [PATCH 06/10] staging/lustre/llite: hold inode mutex around ll_setattr

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Message-Id: <1408121295-29115-7-git-send-email-green@linuxhacker.ru>
Date:	Fri, 15 Aug 2014 12:48:11 -0400
From:	Oleg Drokin <green@...uxhacker.ru>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Cc:	"John L. Hammond" <john.hammond@...el.com>,
	Oleg Drokin <oleg.drokin@...el.com>
Subject: [PATCH 06/10] staging/lustre/llite: hold inode mutex around ll_setattr_raw()

From: "John L. Hammond" <john.hammond@...el.com>

ll_setattr_raw() expects to be called with the inode mutex held so do
when calling it from ll_hsm_import().

Signed-off-by: John L. Hammond <john.hammond@...el.com>
Reviewed-on: http://review.whamcloud.com/11349
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5456
Reviewed-by: Jinshan Xiong <jinshan.xiong@...el.com>
Reviewed-by: Faccini Bruno <bruno.faccini@...el.com>
Signed-off-by: Oleg Drokin <oleg.drokin@...el.com>
---
 drivers/staging/lustre/lustre/llite/file.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index fd1b75a3..084fb92 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2116,10 +2116,14 @@ static int ll_hsm_import(struct inode *inode, struct file *file,
 			 ATTR_MTIME | ATTR_MTIME_SET |
 			 ATTR_ATIME | ATTR_ATIME_SET;
 
+	mutex_lock(&inode->i_mutex);
+
 	rc = ll_setattr_raw(file->f_dentry, attr, true);
 	if (rc == -ENODATA)
 		rc = 0;
 
+	mutex_unlock(&inode->i_mutex);
+
 out:
 	if (hss != NULL)
 		OBD_FREE_PTR(hss);
-- 
1.9.3

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