6768907eb2
Patch series "convert write_cache_pages() to an iterator", v8. This is an evolution of the series Matthew Wilcox originally sent in June 2023, which has changed quite a bit since and now has a while based iterator. This patch (of 14): mapping_set_error should only be called on 0 returns (which it ignores) or a negative error code. writepage_cb ends up being able to call writepage_cb on the magic AOP_WRITEPAGE_ACTIVATE return value from ->writepage which means success but the caller needs to unlock the page. Ignore that and just call mapping_set_error on negative errors. (no fixes tag as this goes back more than 20 years over various renames and refactors so I've given up chasing down the original introduction) Link: https://lkml.kernel.org/r/20240215063649.2164017-1-hch@lst.de Link: https://lkml.kernel.org/r/20240215063649.2164017-2-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Brian Foster <bfoster@redhat.com> Cc: Christian Brauner <brauner@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Dave Chinner <dchinner@redhat.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@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.