[PATCH 0/2] fuse: fix regression in fuse_get_user_pages()

[Maxim Patlasov <MPatlasov@parallels.com>]

Hi,

The patchset fixes a regression introduced by the following commits:

c7f3888ad7f0 ("switch iov_iter_get_pages() to passing maximal number of pages")
c9c37e2e6378 ("fuse: switch to iov_iter_get_pages()")

The regression manifests itslef like this (thanks to Werner Baumann for reporting):

> davfs2 uses the fuse kernel module directly (not using the fuse
> userspace library). A user of davfs2 reported this problem
> (http://savannah.nongnu.org/support/?108640):
> 
> dd if=/dev/zero of=/mnt/owncloud/test.txt bs=20416 count=1
> works fine, but
> dd if=/dev/zero of=/mnt/owncloud/test.txt bs=20417 count=1
> fails.

Thanks,
Maxim

---

Maxim Patlasov (2):
      vfs: switch iov_iter_get_pages() to passing maximal size
      fuse: fuse_get_user_pages(): do not pack more data than requested


 fs/direct-io.c      |    2 +-
 fs/fuse/file.c      |   13 +++++++++----
 include/linux/uio.h |    2 +-
 mm/iov_iter.c       |   17 +++++++++--------
 4 files changed, 20 insertions(+), 14 deletions(-)

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