From d62e74be1270c89fbaf7aada8218bfdf62d00a58 Mon Sep 17 00:00:00 2001 From: Younger Liu Date: Mon, 10 Feb 2014 14:25:51 -0800 Subject: ocfs2: fix issue that ocfs2_setattr() does not deal with new_i_size==i_size The issue scenario is as following: - Create a small file and fallocate a large disk space for a file with FALLOC_FL_KEEP_SIZE option. - ftruncate the file back to the original size again. but the disk free space is not changed back. This is a real bug that be fixed in this patch. In order to solve the issue above, we modified ocfs2_setattr(), if attr->ia_size != i_size_read(inode), It calls ocfs2_truncate_file(), and truncate disk space to attr->ia_size. Signed-off-by: Younger Liu Reviewed-by: Jie Liu Tested-by: Jie Liu Cc: Joel Becker Reviewed-by: Mark Fasheh Cc: Sunil Mushran Reviewed-by: Jensen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/ocfs2/alloc.c') diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index aada5801567a..e2edff38be52 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -7158,7 +7158,7 @@ int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, if (end > i_size_read(inode)) end = i_size_read(inode); - BUG_ON(start >= end); + BUG_ON(start > end); if (!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) || !(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL) || -- cgit v1.2.3