fuse: fix large stack use

[safe/jmp/linux-2.6] / fs / fuse / dev.c

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index b152761..eb7e942 100644 (file)
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -286,8 +286,8 @@ __releases(&fc->lock)
                }
                if (fc->num_background == fc->congestion_threshold &&
                    fc->connected && fc->bdi_initialized) {
-                       clear_bdi_congested(&fc->bdi, READ);
-                       clear_bdi_congested(&fc->bdi, WRITE);
+                       clear_bdi_congested(&fc->bdi, BLK_RW_SYNC);
+                       clear_bdi_congested(&fc->bdi, BLK_RW_ASYNC);
                }
                fc->num_background--;
                fc->active_background--;
@@ -414,8 +414,8 @@ static void fuse_request_send_nowait_locked(struct fuse_conn *fc,
                fc->blocked = 1;
        if (fc->num_background == fc->congestion_threshold &&
            fc->bdi_initialized) {
-               set_bdi_congested(&fc->bdi, READ);
-               set_bdi_congested(&fc->bdi, WRITE);
+               set_bdi_congested(&fc->bdi, BLK_RW_SYNC);
+               set_bdi_congested(&fc->bdi, BLK_RW_ASYNC);
        }
        list_add_tail(&req->list, &fc->bg_queue);
        flush_bg_queue(fc);
@@ -865,13 +865,10 @@ static int fuse_notify_inval_inode(struct fuse_conn *fc, unsigned int size,
 
        down_read(&fc->killsb);
        err = -ENOENT;
-       if (!fc->sb)
-               goto err_unlock;
-
-       err = fuse_reverse_inval_inode(fc->sb, outarg.ino,
-                                      outarg.off, outarg.len);
-
-err_unlock:
+       if (fc->sb) {
+               err = fuse_reverse_inval_inode(fc->sb, outarg.ino,
+                                              outarg.off, outarg.len);
+       }
        up_read(&fc->killsb);
        return err;
 
@@ -884,10 +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;
 
@@ -910,16 +912,14 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size,
 
        down_read(&fc->killsb);
        err = -ENOENT;
-       if (!fc->sb)
-               goto err_unlock;
-
-       err = fuse_reverse_inval_entry(fc->sb, outarg.parent, &name);
-
-err_unlock:
+       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;
 }