Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android

[firefly-linux-kernel-4.4.55.git] / fs / fuse / dev.c

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 9096d44eb22155493176c89ede97234ba50e1c06..7f18063f16552411335e3bbe3e2dae07294f82dc 100644 (file)
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -13,12 +13,14 @@
 #include <linux/poll.h>
 #include <linux/uio.h>
 #include <linux/miscdevice.h>
+#include <linux/namei.h>
 #include <linux/pagemap.h>
 #include <linux/file.h>
 #include <linux/slab.h>
 #include <linux/pipe_fs_i.h>
 #include <linux/swap.h>
 #include <linux/splice.h>
+#include <linux/freezer.h>
 
 MODULE_ALIAS_MISCDEV(FUSE_MINOR);
 MODULE_ALIAS("devname:fuse");
@@ -473,7 +475,9 @@ static void request_wait_answer(struct fuse_conn *fc, struct fuse_req *req)
         * Either request is already in userspace, or it was forced.
         * Wait it out.
         */
-       wait_event(req->waitq, test_bit(FR_FINISHED, &req->flags));
+       while (!test_bit(FR_FINISHED, &req->flags))
+               wait_event_freezable(req->waitq,
+                               test_bit(FR_FINISHED, &req->flags));
 }
 
 static void __fuse_request_send(struct fuse_conn *fc, struct fuse_req *req)
@@ -1932,6 +1936,10 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud,
                cs->move_pages = 0;
 
        err = copy_out_args(cs, &req->out, nbytes);
+       if (req->in.h.opcode == FUSE_CANONICAL_PATH) {
+               req->out.h.error = kern_path((char *)req->out.args[0].value, 0,
+                                                       req->canonical_path);
+       }
        fuse_copy_finish(cs);
 
        spin_lock(&fpq->lock);