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9e46458a7c
The function btrfs_lookup_bio_sums() is only called for read bios. While btrfs_find_ordered_sum() is to search ordered extent sums, which is only for write path. This means to read a page we either: - Submit read bio if it's not uptodate This means we only need to search csum tree for checksums. - The page is already uptodate It can be marked uptodate for previous read, or being marked dirty. As we always mark page uptodate for dirty page. In that case, we don't need to submit read bio at all, thus no need to search any checksums. Remove the btrfs_find_ordered_sum() call in btrfs_lookup_bio_sums(). And since btrfs_lookup_bio_sums() is the only caller for btrfs_find_ordered_sum(), also remove the implementation. Reviewed-by: Nikolay Borisov <nborisov@suse.com> 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.