nfs: fix nfs_size_to_loff_t

commit 50ab8ec74a153eb30db26529088bc57dd700b24c upstream.

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We support OFFSET_MAX just fine, so don't round down below it.  Also
switch to using min_t to make the helper more readable.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Fixes: 433c92379d9c ("NFS: Clean up nfs_size_to_loff_t()")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index e30f6059ecd642b44c0cc599344c0421b713958f..7faf70d9e869646874ac4e2654ffa12ff50a30a2 100644 (file)
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -577,9 +577,7 @@ static inline int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
 
 static inline loff_t nfs_size_to_loff_t(__u64 size)
 {
-       if (size > (__u64) OFFSET_MAX - 1)
-               return OFFSET_MAX - 1;
-       return (loff_t) size;
+       return min_t(u64, size, OFFSET_MAX);
 }
 
 static inline ino_t