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| author | Fang Wenqi <anton.fang@gmail.com> | 2009-12-30 18:37:13 +0800 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@suse.cz> | 2010-02-05 12:08:31 +0100 |
| commit | b2d82ee3c8b2193ee5bc7eca4687ee9be30abd34 (patch) | |
| tree | 41986357886eda7e8e92c33ed32a743afee3f3e6 | |
| parent | b21dda438baa450a76a375a35653ae0377793fab (diff) | |
| download | op-kernel-dev-b2d82ee3c8b2193ee5bc7eca4687ee9be30abd34.zip op-kernel-dev-b2d82ee3c8b2193ee5bc7eca4687ee9be30abd34.tar.gz | |
fuse: fix large stack use
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 <antonf@turbolinux.com.cn>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| -rw-r--r-- | fs/fuse/dev.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index ab62230..eb7e942 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; } |
