From: Xiubo Li <xiubli@xxxxxxxxxx>
If the new size is the same with current size, the MDS will do nothing
except changing the mtime/atime. We can just buffer the truncate in
this case.
Signed-off-by: Xiubo Li <xiubli@xxxxxxxxxx>
---
fs/ceph/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 03530793c969..14989b961431 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2370,7 +2370,7 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr, struct ceph_iattr *c
loff_t isize = i_size_read(inode);
dout("setattr %p size %lld -> %lld\n", inode, isize, attr->ia_size);
- if ((issued & CEPH_CAP_FILE_EXCL) && attr->ia_size > isize) {
+ if ((issued & CEPH_CAP_FILE_EXCL) && attr->ia_size >= isize) {
i_size_write(inode, attr->ia_size);
inode->i_blocks = calc_inode_blocks(attr->ia_size);
ci->i_reported_size = attr->ia_size;
--
2.27.0
