mainlining shenanigans
2f3186d8ee
The new function, end_bio_subpage_eb_writepage(), will handle the metadata writeback endio. The major differences involved are: - How to grab extent buffer Now page::private is a pointer to btrfs_subpage, we can no longer grab extent buffer directly. Thus we need to use the bv_offset to locate the extent buffer manually and iterate through the whole range. - Use btrfs_subpage_end_writeback() caller This helper will handle the subpage writeback for us. Since this function is executed under endio context, when grabbing extent buffers it can't grab eb->refs_lock as that lock is not designed to be grabbed under hardirq context. So here introduce a helper, find_extent_buffer_nolock(), for such situation, and convert find_extent_buffer() to use that helper. 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 | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| 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 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.