From: Yang Sheng <yang.sheng@xxxxxxxxx> 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 <yang.sheng@xxxxxxxxx> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8969 Reviewed-on: https://review.whamcloud.com/24552 Reviewed-by: Bob Glossman <bob.glossman@xxxxxxxxx> Reviewed-by: Bobi Jam <bobijam@xxxxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx> --- 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 devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
