01d1e0e6b7
Convert vmf->page to a folio as soon as we're going to use it. This fixes a bug if the fault handler returns a tail page with hardware poison; tail pages have an invalid page->index, so we would fail to unmap the page from the page tables. We actually have to unmap the entire folio (or mapping_evict_folio() will fail), so use unmap_mapping_folio() instead. This also saves various calls to compound_head() hidden in lock_page(), put_page(), etc. Link: https://lkml.kernel.org/r/20231108182809.602073-3-willy@infradead.org Fixes: 793917d997df ("mm/readahead: Add large folio readahead") Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.