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fb22e9c4cd
In alloc_extent_buffer(), after we got a page from btree inode, we check if that page has private pointer attached. If attached, we check if the existing extent buffer has proper refs. If not (the eb is being freed), we will detach that private eb pointer. The point here is, we are detaching that eb pointer by calling: - ClearPagePrivate() - put_page() The put_page() here is especially confusing, as it's decreasing the ref from attach_page_private(). Without knowing that, it looks like the put_page() is for the find_or_create_page() call, confusing the reader. Since we're always modifying page private with attach_page_private() and detach_page_private(), the only open-coded detach_page_private() here is really confusing. Fix it by calling detach_page_private(). Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
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| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| 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.