1 files changed, 24 insertions, 3 deletions

diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index dd37ee291b8b..dd4401650b47 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -197,6 +197,7 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
         struct fuse_conn *fc = get_fuse_conn(inode);
         struct fuse_inode *fi = get_fuse_inode(inode);
         loff_t oldsize;
+        struct timespec old_mtime;
 
         spin_lock(&fc->lock);
         if (attr_version != 0 && fi->attr_version > attr_version) {
@@ -204,15 +205,35 @@ void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
                 return;
         }
 
+        old_mtime = inode->i_mtime;
         fuse_change_attributes_common(inode, attr, attr_valid);
 
         oldsize = inode->i_size;
         i_size_write(inode, attr->size);
         spin_unlock(&fc->lock);
 
-        if (S_ISREG(inode->i_mode) && oldsize != attr->size) {
-                truncate_pagecache(inode, oldsize, attr->size);
-                invalidate_inode_pages2(inode->i_mapping);
+        if (S_ISREG(inode->i_mode)) {
+                bool inval = false;
+
+                if (oldsize != attr->size) {
+                        truncate_pagecache(inode, oldsize, attr->size);
+                        inval = true;
+                } else if (fc->auto_inval_data) {
+                        struct timespec new_mtime = {
+                                .tv_sec = attr->mtime,
+                                .tv_nsec = attr->mtimensec,
+                        };
+
+                        /*
+                         * Auto inval mode also checks and invalidates if mtime
+                         * has changed.
+                         */
+                        if (!timespec_equal(&old_mtime, &new_mtime))
+                                inval = true;
+                }
+
+                if (inval)
+                        invalidate_inode_pages2(inode->i_mapping);
         }
 }