Re: [PATCH] ext4: convert inline data to extents when truncate exceeds inline size

[Christoph Hellwig]

On Sat, Feb 07, 2026 at 10:06:07AM +0530, Deepanshu Kartikey wrote:
> Without this fix, the following sequence causes a kernel BUG_ON():
> 
> 1. Mount filesystem with inode that has inline flag set and small size
> 2. truncate(file, 50MB) - grows size but inline flag remains set
> 3. sendfile() attempts to write data
> 4. ext4_write_inline_data() hits BUG_ON(write_size > inline_capacity)

Can you wirte this up in an xfstests test, please?