From f3f8e17571934ea253339e15c4ec9b34ea623c6b Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 11 Aug 2008 12:39:47 -0400
Subject: [PATCH] [PATCH] reduce the stack footprint of exportfs_decode_fh()
no need to have _two_ 256-byte arrays on stack...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/exportfs/expfs.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 7b0f75dcf800..51bdc5cab069 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -94,9 +94,8 @@ find_disconnected_root(struct dentry *dentry)
* It may already be, as the flag isn't always updated when connection happens.
*/
static int
-reconnect_path(struct vfsmount *mnt, struct dentry *target_dir)
+reconnect_path(struct vfsmount *mnt, struct dentry *target_dir, char *nbuf)
{
- char nbuf[NAME_MAX+1];
int noprogress = 0;
int err = -ESTALE;
@@ -360,6 +359,7 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
{
const struct export_operations *nop = mnt->mnt_sb->s_export_op;
struct dentry *result, *alias;
+ char nbuf[NAME_MAX+1];
int err;
/*
@@ -379,7 +379,7 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
* filesystem root.
*/
if (result->d_flags & DCACHE_DISCONNECTED) {
- err = reconnect_path(mnt, result);
+ err = reconnect_path(mnt, result, nbuf);
if (err)
goto err_result;
}
@@ -395,7 +395,6 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
* It's not a directory. Life is a little more complicated.
*/
struct dentry *target_dir, *nresult;
- char nbuf[NAME_MAX+1];
/*
* See if either the dentry we just got from the filesystem
@@ -429,7 +428,7 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
* connected to the filesystem root. The VFS really doesn't
* like disconnected directories..
*/
- err = reconnect_path(mnt, target_dir);
+ err = reconnect_path(mnt, target_dir, nbuf);
if (err) {
dput(target_dir);
goto err_result;
--
2.20.1