mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-14 07:42:38 -04:00
ee76e5a742
The following functions are doing metadata specific checks: - set_extent_buffer_uptodate() - clear_extent_buffer_uptodate() The reason why we do not use btrfs_folio_*() helpers for those helpers is, btrfs_is_subpage() cannot handle dummy extent buffer if nodesize >= PAGE_SIZE but block size < PAGE_SIZE. In that case, we do not need to attach extra bitmaps to the extent buffer folio. But since dummy extent buffer folios are not attached to btree inode, btrfs_is_subpage() will return true, causing problems. And the following are using btrfs_folio_*() helpers for metadata, but in theory we should use metadata specific checks: - set_extent_buffer_dirty() This is not causing problems because a dummy extent buffer should never be marked dirty. To make code simpler, introduce btrfs_meta_folio_*() helpers, to do the metadata specific handling, so that we do not to open-code such checks in above involved functions. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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 reStructuredText 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.