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Subject[PATCH 10/10] orangefs: do not check possibly stale size on truncate
Date
Let the server figure this out because our size might be out of date or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

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

diff --git a/fs/orangefs/inode.c b/fs/orangefs/inode.c
index ee28364..7f82e56 100644
--- a/fs/orangefs/inode.c
+++ b/fs/orangefs/inode.c
@@ -218,8 +218,7 @@ int orangefs_setattr(struct dentry *dentry, struct iattr *iattr)
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;
--
2.1.4
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