linux-ext4 - [PATCH 0/6 v2] fs: Provide function to unmap metadata for a range of blocks

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Date:   Fri,  4 Nov 2016 18:08:10 +0100
From:   Jan Kara <jack@...e.cz>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Christoph Hellwig <hch@...radead.org>,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
        ocfs2-devel@....oracle.com, Evgeniy Dushistov <dushistov@...l.ru>,
        linux-ntfs-dev@...ts.sourceforge.net, Jan Kara <jack@...e.cz>
Subject: [PATCH 0/6 v2] fs: Provide function to unmap metadata for a range of blocks

Hello,

I've noticed that in several places we need to unmap metadata in buffer cache
for a range of blocks and we do it by iterating over all blocks in given range.
Let's provide a helper function for that and implement it in a way more
efficient for larger ranges of blocks. Also cleanup other uses of
unmap_unerlying_metadata().  The patches passed xfstests for ext2 and ext4.

Jens, can you merge these patches if they look fine to you?

Changes since v1:
* Improved comment describing what the function does
* Renamed function
* Added wrapper for single block users and use it

								Honza
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