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Qu Wenruo 14ae4ec1ee btrfs: extent-tree: Fix a bug that btrfs is unable to add pinned bytes Commit `ddf30cf03f` ("btrfs: extent-tree: Use btrfs_ref to refactor add_pinned_bytes()") refactored add_pinned_bytes(), but during that refactor, there are two callers which add the pinned bytes instead of subtracting. That refactor misses those two caller, causing incorrect pinned bytes calculation and resulting unexpected ENOSPC error. Fix it by adding a new parameter @sign to restore the original behavior. Reported-by: kernel test robot <rong.a.chen@intel.com> Fixes: `ddf30cf03f` ("btrfs: extent-tree: Use btrfs_ref to refactor add_pinned_bytes()") Signed-off-by: Qu Wenruo <wqu@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>		History 2019-05-16 14:31:13 +02:00
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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.