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896c8b92dd
[HICCUP] After adding extra checks on btrfs_file_extent_item::ram_bytes to tree-checker, running fsstress leads to tree-checker warning at write time, as we created file extent items with an invalid ram_bytes. All those offending file extents have offset 0, and ram_bytes matching num_bytes, and smaller than disk_num_bytes. This would also trigger the recently enhanced btrfs-check, which catches such mismatches and report them as minor errors. [CAUSE] When a folio/page is invalidated and it is part of a submitted OE, we mark the OE truncated just to the beginning of the folio/page. And for truncated OE, we insert the file extent item with incorrect value for ram_bytes (using num_bytes instead of the usual value). This is not a big deal for end users, as we do not utilize the ram_bytes field for regular non-compressed extents. This mismatch is just a small violation against on-disk format. [FIX] Fix it by removing the override on btrfs_file_extent_item::ram_bytes. Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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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 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.