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cc7b8f6245
There used to be a 'retry' label in between the two (identical) checks when first introduced in commitf446daaea9("mm: implement writeback livelock avoidance using page tagging"), and later modified/updated in commit6e6938b6d3("writeback: introduce .tagged_writepages for the WB_SYNC_NONE sync stage"). The label has been removed in commit64081362e8("mm/page-writeback.c: fix range_cyclic writeback vs writepages deadlock"), and the (identical) checks are now present / performed immediately one after another. So, remove/deduplicate the latter check, moving tag_pages_for_writeback() into the former check before the 'tag' variable assignment, so it's clear that it's not used in this (similarly-named) function call but only later in pagevec_lookup_range_tag(). Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Kara <jack@suse.cz> Link: http://lkml.kernel.org/r/20200218221716.1648-1-mfo@canonical.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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.