From: Brian Foster <bfoster@redhat.com>
Date: Fri, 17 May 2013 19:27:34 +0000 (-0400)
Subject: fuse: update inode size and invalidate attributes on fallocate
X-Git-Tag: firefly_0821_release~3680^2~368^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=bee6c307800bbb26ba1a855b1841c2f0c4b7622a;p=firefly-linux-kernel-4.4.55.git

fuse: update inode size and invalidate attributes on fallocate

An fallocate request without FALLOC_FL_KEEP_SIZE set can extend the
size of a file. Update the inode size after a successful fallocate.

Also invalidate the inode attributes after a successful fallocate
to ensure we pick up the latest attribute values (i.e., i_blocks).

Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
---

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a200a2d80377..d9f467907791 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -2492,11 +2492,20 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
 	}
 	fuse_put_request(fc, req);
 
+	if (err)
+		goto out;
+
+	/* we could have extended the file */
+	if (!(mode & FALLOC_FL_KEEP_SIZE))
+		fuse_write_update_size(inode, offset + length);
+
+	if (mode & FALLOC_FL_PUNCH_HOLE)
+		truncate_pagecache_range(inode, offset, offset + length - 1);
+
+	fuse_invalidate_attr(inode);
+
 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);
 	}