From: Andrzej Jakowski <andrzej.jakowski@intel.com>
Date: Wed, 27 Jul 2016 19:17:24 +0000 (-0700)
Subject: Fix resource leak in the STREAM_CLOSE path.
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=refs%2Fheads%2Fio-streamid;p=linux-2.6-block.git

Fix resource leak in the STREAM_CLOSE path.

Allocated stream identifier (alloc_id) nor closed stream_id has never
been deallocated in the STREAM_CLOSE path, causing issues when closed
stream was reopened again. This patch fixes that problem.

Signed-off-by: Andrzej Jakowski <andrzej.jakowski@intel.com>
Signed-off-by: Kapil Karkra <kapil.karkra@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/fs/read_write.c b/fs/read_write.c
index 7218d69b1763..6ad3dc5cea4d 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1737,6 +1737,8 @@ SYSCALL_DEFINE4(streamid, int, fd, int, cmd,
 			inode->i_streamid = 0;
 			spin_unlock(&inode->i_lock);
 		}
+		bdi_streamid(f.file->f_mapping->host, STREAMID_CLOSE, alloc_id);
+		bdi_streamid(f.file->f_mapping->host, STREAMID_CLOSE, streamid);
 	}
 
 done: