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[PATCH 3/8] xfs: remove s_maxbytes enforcement in xfs_file_read_iter

To: xfs@xxxxxxxxxxx
Subject: [PATCH 3/8] xfs: remove s_maxbytes enforcement in xfs_file_read_iter
From: Christoph Hellwig <hch@xxxxxx>
Date: Wed, 22 Jun 2016 17:27:11 +0200
Cc: linux-nvdimm@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <1466609236-23801-1-git-send-email-hch@xxxxxx>
References: <1466609236-23801-1-git-send-email-hch@xxxxxx>
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@xxxxxx>
---
 fs/xfs/xfs_file.c | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index b32e6b0..09a5a78 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -249,7 +249,6 @@ 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);
@@ -266,13 +265,6 @@ 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;
 
-- 
2.1.4

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