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9266a14033
generic_file_direct_write() tries to invalidate pagecache after O_DIRECT write. Unlike to similar code in dio_complete() this silently ignores error returned from invalidate_inode_pages2_range(). According to comment this code here because not all filesystems call dio_complete() to do proper invalidation after O_DIRECT write. Noticeable example is a blkdev_direct_IO(). This patch calls dio_warn_stale_pagecache() if invalidation fails. Link: http://lkml.kernel.org/r/157270038294.4812.2238891109785106069.stgit@buzz Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 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.