1 files changed, 20 insertions, 2 deletions

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index fe191325fefa..a200a2d80377 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -16,6 +16,7 @@
 #include <linux/compat.h>
 #include <linux/swap.h>
 #include <linux/aio.h>
+#include <linux/falloc.h>
 
 static const struct file_operations fuse_direct_io_file_operations;
 
@@ -2453,6 +2454,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
                                 loff_t length)
 {
         struct fuse_file *ff = file->private_data;
+        struct inode *inode = file->f_inode;
         struct fuse_conn *fc = ff->fc;
         struct fuse_req *req;
         struct fuse_fallocate_in inarg = {
@@ -2466,9 +2468,16 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
         if (fc->no_fallocate)
                 return -EOPNOTSUPP;
 
+        if (mode & FALLOC_FL_PUNCH_HOLE) {
+                mutex_lock(&inode->i_mutex);
+                fuse_set_nowrite(inode);
+        }
+
         req = fuse_get_req_nopages(fc);
-        if (IS_ERR(req))
-                return PTR_ERR(req);
+        if (IS_ERR(req)) {
+                err = PTR_ERR(req);
+                goto out;
+        }
 
         req->in.h.opcode = FUSE_FALLOCATE;
         req->in.h.nodeid = ff->nodeid;
@@ -2483,6 +2492,15 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
         }
         fuse_put_request(fc, req);
 
+out:
+        if (mode & FALLOC_FL_PUNCH_HOLE) {
+                if (!err)
+                        truncate_pagecache_range(inode, offset,
+                                                 offset + length - 1);
+                fuse_release_nowrite(inode);
+                mutex_unlock(&inode->i_mutex);
+        }
+
         return err;
 }