[PATCH v2 2/3] cifs: warn about deprecation of /proc/fs/cifs/OplockEnabled interface

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The plan is to deprecate this interface by kernel version 3.4.

Changes since v1
   - add a '\n' to the printk.

Reported-by: Alexander Swen <alex@xxxxxxx>
Cc: Jeff Layton <jlayton@xxxxxxxxxx>
Signed-off-by: Suresh Jayaraman <sjayaraman@xxxxxxx>
---
 fs/cifs/cifs_debug.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 2fe3cf1..831fe13 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -526,6 +526,9 @@ static ssize_t cifs_oplock_proc_write(struct file *file,
 	char c;
 	int rc;
 
+	printk(KERN_WARNING "CIFS: The /proc/fs/cifs/OplockEnabled interface "
+	       "will be removed in kernel version 3.4. Please migrate to "
+	       "using the 'enable_oplocks' module parameter in cifs.ko.\n");
 	rc = get_user(c, buffer);
 	if (rc)
 		return rc;
--
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