Patch "orangefs: do not check possibly stale size on truncate" has been added to the 4.10-stable tree

Patch "orangefs: do not check possibly stale size on truncate" has been added to the 4.10-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    orangefs: do not check possibly stale size on truncate

to the 4.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     orangefs-do-not-check-possibly-stale-size-on-truncate.patch
and it can be found in the queue-4.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 53950ef541675df48c219a8d665111a0e68dfc2f Mon Sep 17 00:00:00 2001
From: Martin Brandenburg <martin@omnibond.com>
Date: Tue, 25 Apr 2017 15:38:04 -0400
Subject: orangefs: do not check possibly stale size on truncate

From: Martin Brandenburg <martin@omnibond.com>

commit 53950ef541675df48c219a8d665111a0e68dfc2f upstream.

Let the server figure this out because our size might be out of date or
not present.

The bug was that

	xfs_io -f -t -c "pread -v 0 100" /mnt/foo
	echo "Test" > /mnt/foo
	xfs_io -f -t -c "pread -v 0 100" /mnt/foo

fails because the second truncate did not happen if nothing had
requested the size after the write in echo.  Thus i_size was zero (not
present) and the orangefs_setattr though i_size was zero and there was
nothing to do.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/orangefs/inode.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/orangefs/inode.c
+++ b/fs/orangefs/inode.c
@@ -224,8 +224,7 @@ int orangefs_setattr(struct dentry *dent
 	if (ret)
 		goto out;
 
-	if ((iattr->ia_valid & ATTR_SIZE) &&
-	    iattr->ia_size != i_size_read(inode)) {
+	if (iattr->ia_valid & ATTR_SIZE) {
 		ret = orangefs_setattr_size(inode, iattr);
 		if (ret)
 			goto out;


Patches currently in stable-queue which might be from martin@omnibond.com are

queue-4.10/orangefs-do-not-check-possibly-stale-size-on-truncate.patch
queue-4.10/orangefs-fix-bounds-check-for-listxattr.patch
queue-4.10/orangefs-clean-up-oversize-xattr-validation.patch
queue-4.10/orangefs-do-not-set-getattr_time-on-orangefs_lookup.patch