[fuse-devel] [PATCH] fuse: update inode size and invalidate attributes on fallocate

[Brian F. <bf...@re...>]

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 <bf...@re...>
---

This applies on top of my previous "truncate pagecache range on hole punch" patch:

http://sourceforge.net/mailarchive/forum.php?thread_name=1368797432-54074-1-git-send-email-bfoster%40redhat.com&forum_name=fuse-devel

Brian

 fs/fuse/file.c |   15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a200a2d..cb963d0 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);
 	}
-- 
1.7.7.6