mutex_unlock() later in seq_lseek()

All manipulations with struct seq_file::version are done under
struct seq_file::lock except one introduced in commit
d6b7a781c51c91dd054e5c437885205592faac21
aka "[PATCH] Speed up /proc/pid/maps"

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/seq_file.c b/fs/seq_file.c
index 49194a4e6b91ba9dcd22c3aa7fe81f794aca4413..e8e51db4989d9123bd0d8c6eb13a3a0346bf30e7 100644 (file)
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -260,8 +260,8 @@ loff_t seq_lseek(struct file *file, loff_t offset, int origin)
                                }
                        }
        }
-       mutex_unlock(&m->lock);
        file->f_version = m->version;
+       mutex_unlock(&m->lock);
        return retval;
 }
 EXPORT_SYMBOL(seq_lseek);