don't bother with call_rcu() in put_files_struct()
At that point nobody can see us anyway; everything that
looks at files_fdtable(files) is separated from the
guts of put_files_struct(files) - either since files is
current->files or because we fetched it under task_lock()
and hadn't dropped that yet, or because we'd bumped
files->count while holding task_lock()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/file.c b/fs/file.c
index 0be423c..533fa5d 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -447,18 +447,14 @@
if (atomic_dec_and_test(&files->count)) {
close_files(files);
- /*
- * Free the fd and fdset arrays if we expanded them.
- * If the fdtable was embedded, pass files for freeing
- * at the end of the RCU grace period. Otherwise,
- * you can free files immediately.
- */
+ /* not really needed, since nobody can see us */
rcu_read_lock();
fdt = files_fdtable(files);
- if (fdt != &files->fdtab)
- kmem_cache_free(files_cachep, files);
- free_fdtable(fdt);
rcu_read_unlock();
+ /* free the arrays if they are not embedded */
+ if (fdt != &files->fdtab)
+ __free_fdtable(fdt);
+ kmem_cache_free(files_cachep, files);
}
}