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 4.9-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-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 53950ef541675df48c219a8d665111a0e68dfc2f Mon Sep 17 00:00:00 2001
From: Martin Brandenburg <martin@xxxxxxxxxxxx>
Date: Tue, 25 Apr 2017 15:38:04 -0400
Subject: orangefs: do not check possibly stale size on truncate
From: Martin Brandenburg <martin@xxxxxxxxxxxx>
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Let the server figure this out because our size might be out of date or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@xxxxxxxxxxxx>
Signed-off-by: Mike Marshall <hubcap@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/orangefs/inode.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/fs/orangefs/inode.c
+++ b/fs/orangefs/inode.c
@@ -223,8 +223,7 @@ 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@xxxxxxxxxxxx are
queue-4.9/orangefs-do-not-check-possibly-stale-size-on-truncate.patch
queue-4.9/orangefs-fix-bounds-check-for-listxattr.patch
queue-4.9/orangefs-clean-up-oversize-xattr-validation.patch
queue-4.9/orangefs-do-not-set-getattr_time-on-orangefs_lookup.patch