Re: [PATCH 1/2] mm/khugepaged: do synchronous writeback for MADV_COLLAPSE

[David Hildenbrand (Red Hat)]

On 10.11.25 14:47, Matthew Wilcox wrote:

On Mon, Nov 10, 2025 at 11:32:53AM +0000, Shivank Garg wrote:

When MADV_COLLAPSE is called on file-backed mappings (e.g., executable
text sections), the pages may still be dirty from recent writes. The

That explanation derails my brain entirely.  Text isn't writable!  How
can the pages be dirty and file-backed text?

Files are writable :)