[PATCH 0/3] Allow fscache to work on BTRFS

From: NeilBrown <neilb@suse.de>
To: David Howells <dhowells@redhat.com>, Chris Mason <clm@fb.com>,
	Al Viro <viro@ZenIV.linux.org.uk>, Josef Bacik <jbacik@fb.com>,
	David Sterba <dsterba@suse.cz>
Cc: linux-cachefs@vger.kernel.org, Dave Chinner <david@fromorbit.com>,
	linux-kernel@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>,
	linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org
Subject: [PATCH 0/3] Allow fscache to work on BTRFS
Date: Mon, 20 Apr 2015 15:27:52 +1000	[thread overview]
Message-ID: <20150420052558.26554.97143.stgit@notabene.brown> (raw)

The following three patches allow fs to "cachefiles" in a BTRFS
filesystem.

The first is a minor cleanup to cachefiles.
The second is the main change - it teaches cachefile to use
lseek(SEEK_DATA) to find allocated blocks in a file, rather than bmap.
The third patch simply enables this for btrfs.

Thanks,
NeilBrown

---

NeilBrown (3):
      cachefiles: perform test on s_blocksize when opening cache file.
      fscache/cachefiles: optionally use SEEK_DATA instead of ->bmap.
      btrfs: set FS_SUPPORTS_SEEK_HOLE flag.

 fs/btrfs/super.c      |    3 +
 fs/cachefiles/namei.c |   13 ++++-
 fs/cachefiles/rdwr.c  |  125 ++++++++++++++++++++++++++++++-------------------
 include/linux/fs.h    |    1 
 4 files changed, 88 insertions(+), 54 deletions(-)

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