fdf250db89
There are two call sites of btrfs_alloc_subpage(): - btrfs_attach_subpage() We have ensured sectorsize is smaller than PAGE_SIZE - alloc_extent_buffer() We call btrfs_alloc_subpage() unconditionally. The alloc_extent_buffer() forces us to check the sectorsize size against page size inside btrfs_alloc_subpage(). Since the function name, btrfs_alloc_subpage(), already indicates it should only get called for subpage cases, do the check in alloc_extent_buffer() and add an ASSERT() in btrfs_alloc_subpage(). Reviewed-by: Nikolay Borisov <nborisov@suse.com> 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 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.