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62862485a4
Before this patch, function gfs2_scan_glock_lru would only try to free glocks that had a reference count of 0. But if the reference count ever got to 0, the glock should have already been freed. Shrinker function gfs2_dispose_glock_lru checks whether glocks on the LRU are demote_ok, and if so, tries to demote them. But that's only possible if the reference count is at least 1. This patch changes gfs2_scan_glock_lru so it will try to demote and/or dispose of glocks that have a reference count of 1 and which are either demotable, or are already unlocked. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> |
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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 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.