xfs: remove s_maxbytes enforcement in xfs_file_read_iter

All the three low-level read implementations that we might call already
take care of not overflowing the maximum supported bytes, no need to
duplicate it here.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index e51622c8e4829044c34ccf1f6a347cc00990dc37..7ec8225b7fd208b066f0858a1eacf8b285267bb2 100644 (file)
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -292,7 +292,6 @@ xfs_file_read_iter(
        struct xfs_mount        *mp = ip->i_mount;
        size_t                  size = iov_iter_count(to);
        ssize_t                 ret = 0;
-       xfs_fsize_t             n;
        loff_t                  pos = iocb->ki_pos;
 
        XFS_STATS_INC(mp, xs_read_calls);
@@ -309,13 +308,6 @@ xfs_file_read_iter(
                }
        }
 
-       n = mp->m_super->s_maxbytes - pos;
-       if (n <= 0 || size == 0)
-               return 0;
-
-       if (n < size)
-               size = n;
-
        if (XFS_FORCED_SHUTDOWN(mp))
                return -EIO;