fuse: ->direct_IO() doesn't need generic_write_checks()

already done by caller.  We used to call __fuse_direct_write(), which
called generic_write_checks(); now the former got expanded, bringing
the latter to the surface.  It used to be called all along and calling
it from there had been wrong all along...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 8 deletions

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 4c04a8144a75..8c15d0a077e8 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2806,8 +2806,8 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
         if (async_dio && iov_iter_rw(iter) != WRITE && offset + count > i_size) {
                 if (offset >= i_size)
                         return 0;
-                count = min_t(loff_t, count, fuse_round_up(i_size - offset));
-                iov_iter_truncate(iter, count);
+                iov_iter_truncate(iter, fuse_round_up(i_size - offset));
+                count = iov_iter_count(iter);
         }
 
         io = kmalloc(sizeof(struct fuse_io_priv), GFP_KERNEL);
@@ -2841,12 +2841,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)
                 io->done = &wait;
 
         if (iov_iter_rw(iter) == WRITE) {
-                ret = generic_write_checks(file, &pos, &count);
-                if (!ret) {
-                        iov_iter_truncate(iter, count);
-                        ret = fuse_direct_io(io, iter, &pos, FUSE_DIO_WRITE);
-                }
-
+                ret = fuse_direct_io(io, iter, &pos, FUSE_DIO_WRITE);
                 fuse_invalidate_attr(inode);
         } else {
                 ret = __fuse_direct_read(io, iter, &pos);