From: Yang Sheng <[email protected]> The function generic_file_read_iter() does not check EOF before invoke direct_IO callback. So we have to check it ourselves.
Signed-off-by: Yang Sheng <[email protected]> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8969 Reviewed-on: https://review.whamcloud.com/24552 Reviewed-by: Bob Glossman <[email protected]> Reviewed-by: Bobi Jam <[email protected]> Reviewed-by: Oleg Drokin <[email protected]> Signed-off-by: James Simmons <[email protected]> --- drivers/staging/lustre/lustre/llite/rw26.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/staging/lustre/lustre/llite/rw26.c b/drivers/staging/lustre/lustre/llite/rw26.c index 21e06e5..d89e795 100644 --- a/drivers/staging/lustre/lustre/llite/rw26.c +++ b/drivers/staging/lustre/lustre/llite/rw26.c @@ -345,6 +345,10 @@ static ssize_t ll_direct_IO_26(struct kiocb *iocb, struct iov_iter *iter) ssize_t tot_bytes = 0, result = 0; long size = MAX_DIO_SIZE; + /* Check EOF by ourselves */ + if (iov_iter_rw(iter) == READ && file_offset >= i_size_read(inode)) + return 0; + /* FIXME: io smaller than PAGE_SIZE is broken on ia64 ??? */ if ((file_offset & ~PAGE_MASK) || (count & ~PAGE_MASK)) return -EINVAL; -- 1.8.3.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
