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    Subject[PATCH 0/2] sys_write() should write all valid data
    Date
    There's user-visible misbehavour in sys_write(): when user tries to put
    down to disk some data, which crosses boundary of existing memory, sys_write()
    either immediately returns with EFAULT or writes first page(s).

    Next 2 patches make sys_write()'s behaviour more consistent: it tries now
    to write down all what it can.

    Vitaly Mayatskikh (2):
    Introduce check_readable_bytes()
    Perform checks in iov_iter_fault_in_readable() with
    check_readable_bytes()

    fs/fuse/file.c | 6 ++++--
    include/linux/pagemap.h | 35 +++++++++++++++++++++++++++++++++++
    mm/filemap.c | 13 +++++++++----
    3 files changed, 48 insertions(+), 6 deletions(-)



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