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64944ef6a1
The original VM_BUG_ON only allows swap_entry_range_free() to drop last SWAP_HAS_CACHE ref. By allowing other kind of last ref in VM_BUG_ON, swap_entry_range_free() could be a more general-purpose function able to handle all kind of last ref. Following thi change, also rename swap_entry_range_free() to swap_entries_free() and update it's comment accordingly. This is a preparation to use swap_entries_free() to drop more kind of last ref other than SWAP_HAS_CACHE. [shikemeng@huaweicloud.com: add __maybe_unused attribute for swap_is_last_ref() and update comment] Link: https://lkml.kernel.org/r/20250410153908.612984-1-shikemeng@huaweicloud.com Link: https://lkml.kernel.org/r/20250325162528.68385-3-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Reviewed-by: Tim Chen <tim.c.chen@linux.intel.com> Reviewed-by: Baoquan He <bhe@redhat.com> Tested-by: SeongJae Park <sj@kernel.org> Cc: Kairui Song <kasong@tencent.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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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.