From b2d82ee3c8b2193ee5bc7eca4687ee9be30abd34 Mon Sep 17 00:00:00 2001 From: Fang Wenqi Date: Wed, 30 Dec 2009 18:37:13 +0800 Subject: fuse: fix large stack use MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit gcc 4.4 warns about: fs/fuse/dev.c: In function ‘fuse_notify_inval_entry’: fs/fuse/dev.c:925: warning: the frame size of 1060 bytes is larger than 1024 bytes The problem is we declare two structures and a large array on the stack, I move the array alway from the stack and allocate memory for it dynamically. Signed-off-by: Fang Wenqi Signed-off-by: Miklos Szeredi --- fs/fuse/dev.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index ab622305c2f5..eb7e9423691f 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -881,10 +881,15 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size, struct fuse_copy_state *cs) { struct fuse_notify_inval_entry_out outarg; - int err = -EINVAL; - char buf[FUSE_NAME_MAX+1]; + int err = -ENOMEM; + char *buf; struct qstr name; + buf = kzalloc(FUSE_NAME_MAX + 1, GFP_KERNEL); + if (!buf) + goto err; + + err = -EINVAL; if (size < sizeof(outarg)) goto err; @@ -910,9 +915,11 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size, if (fc->sb) err = fuse_reverse_inval_entry(fc->sb, outarg.parent, &name); up_read(&fc->killsb); + kfree(buf); return err; err: + kfree(buf); fuse_copy_finish(cs); return err; } -- cgit v1.2.3