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e820dbeb6a
The buffered write path is still heavily utilizing the page interface. Since we have converted it to do a page-by-page copying, it's much easier to convert all involved functions to folio interface, this involves: - btrfs_copy_from_user() - btrfs_drop_folio() - prepare_uptodate_page() - prepare_one_page() - lock_and_cleanup_extent_if_need() - btrfs_dirty_page() All function are changed to accept a folio parameter, and if the word "page" is in the function name, change that to "folio" too. The function btrfs_dirty_page() is exported for v1 space cache, convert v1 cache call site to convert its page to folio for the new interface. And there is a small enhancement for prepare_one_folio(), instead of manually waiting for the page writeback, let __filemap_get_folio() to handle that by using FGP_WRITEBEGIN, which implies (FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE). Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.