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xfs: remove s_maxbytes enforcement in xfs_file_read_iter

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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>
This commit is contained in:
Christoph Hellwig 2016-07-20 11:31:53 +10:00 committed by Dave Chinner
parent 3176c3e0ef
commit cf810712cc
1 changed files with 0 additions and 8 deletions
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8
fs/xfs/xfs_file.c
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@ -292,7 +292,6 @@ xfs_file_read_iter(
struct xfs_mount *mp = ip->i_mount; struct xfs_mount *mp = ip->i_mount;
size_t size = iov_iter_count(to); size_t size = iov_iter_count(to);
ssize_t ret = 0; ssize_t ret = 0;
xfs_fsize_t n;
loff_t pos = iocb->ki_pos; loff_t pos = iocb->ki_pos;
XFS_STATS_INC(mp, xs_read_calls); 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)) if (XFS_FORCED_SHUTDOWN(mp))
return -EIO; return -EIO;