[PATCH] FUSE: atomic create+open

This patch adds an atomic create+open operation.  This does not yet work if
the file type changes between lookup and create+open, but solves the
permission checking problems for the separte create and open methods.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index a6f90a6c754a..8f873e621f41 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -184,6 +184,13 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req)
                    fuse_putback_request() */
                 for (i = 1; i < FUSE_MAX_OUTSTANDING; i++)
                         up(&fc->outstanding_sem);
+        } else if (req->in.h.opcode == FUSE_RELEASE && req->inode == NULL) {
+                /* Special case for failed iget in CREATE */
+                u64 nodeid = req->in.h.nodeid;
+                __fuse_get_request(req);
+                fuse_reset_request(req);
+                fuse_send_forget(fc, req, nodeid, 1);
+                putback = 0;
         }
         if (putback)
                 fuse_putback_request(fc, req);