2 files changed, 4 insertions, 3 deletions

diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 19214435b752..3675088cb88c 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -1552,7 +1552,7 @@ int ext2_setattr(struct dentry *dentry, struct iattr *iattr)
                 if (error)
                         return error;
         }
-        if (iattr->ia_valid & ATTR_SIZE) {
+        if (iattr->ia_valid & ATTR_SIZE && iattr->ia_size != inode->i_size) {
                 error = ext2_setsize(inode, iattr->ia_size);
                 if (error)
                         return error;
diff --git a/mm/shmem.c b/mm/shmem.c
index 7e5030ae18ff..f65f84062db5 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -764,10 +764,11 @@ done2:
 static int shmem_notify_change(struct dentry *dentry, struct iattr *attr)
 {
         struct inode *inode = dentry->d_inode;
+        loff_t newsize = attr->ia_size;
         int error;
 
-        if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE)) {
-                loff_t newsize = attr->ia_size;
+        if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE)
+                                        && newsize != inode->i_size) {
                 struct page *page = NULL;
 
                 if (newsize < inode->i_size) {