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From: Mark Tinguely <tinguely@sgi.com>
To: XFS Filesystem <xfs@oss.sgi.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Subject: [PATCH] xfs: fix 32bit __divdi3 undefined
Date: Wed, 16 Apr 2014 16:51:56 -0500	[thread overview]
Message-ID: <20140416215223.512644029@sgi.com> (raw)
In-Reply-To: 534EAB41.60901@windriver.com

[-- Attachment #1: xfs-fix-32bit-__divdi3-undefined.patch --]
[-- Type: text/plain, Size: 1157 bytes --]

The roundup in commit 68c1fb5d should be a roundup_64()
because it is desired to round a 64 bit type by an integer
and that will result in a 64 bit value. On 32 bit machines
using roundup() in this case will result in the error:

 ERROR: "__divdi3" [fs/xfs/xfs.ko] undefined!

Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Mark Tinguely <tinguely@sgi.com>
---
 fs/xfs/xfs_aops.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/fs/xfs/xfs_aops.c
===================================================================
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1365,7 +1365,7 @@ __xfs_get_blocks(
 		if (offset < i_size_read(inode) &&
 		    offset + mapping_size >= i_size_read(inode)) {
 			/* limit mapping to block that spans EOF */
-			mapping_size = roundup(i_size_read(inode) - offset,
+			mapping_size = roundup_64(i_size_read(inode) - offset,
 					       1 << inode->i_blkbits);
 		}
 		if (mapping_size > LONG_MAX)


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  parent reply	other threads:[~2014-04-16 21:55 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-16 16:09 new 64 bit math link fail in xfs in linux-next today Paul Gortmaker
2014-04-16 16:09 ` Paul Gortmaker
2014-04-16 20:59 ` Mark Tinguely
2014-04-16 21:45   ` Paul Gortmaker
2014-04-16 21:45     ` Paul Gortmaker
2014-04-16 21:51 ` Mark Tinguely [this message]
2014-04-16 21:57   ` [PATCH] xfs: fix 32bit __divdi3 undefined Eric Sandeen
2014-04-16 22:10   ` Dave Chinner
2014-04-16 22:30     ` Mark Tinguely
2014-04-16 21:57 ` new 64 bit math link fail in xfs in linux-next today Dave Chinner
2014-04-16 21:57   ` Dave Chinner

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