fuse: categorize fuse_get_req()

The patch categorizes all fuse_get_req() invocations into two categories:
 - fuse_get_req_nopages(fc) - when caller doesn't care about req->pages
 - fuse_get_req(fc, n) - when caller need n page pointers (n > 0)

Adding fuse_get_req_nopages() helps to avoid numerous fuse_get_req(fc, 0)
scattered over code. Now it's clear from the first glance when a caller need
fuse_req with page pointers.

The patch doesn't make any logic changes. In multi-page case, it silly
allocates array of FUSE_MAX_PAGES_PER_REQ page pointers. This will be amended
by future patches.

Signed-off-by: Maxim Patlasov <mpatlasov@parallels.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 9a937f0239e8..9d95a5a3d55c 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -413,7 +413,7 @@ static int fuse_statfs(struct dentry *dentry, struct kstatfs *buf)
                 return 0;
         }
 
-        req = fuse_get_req(fc);
+        req = fuse_get_req_nopages(fc);
         if (IS_ERR(req))
                 return PTR_ERR(req);