From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: [PATCH 0/3] Allow fscache to work on BTRFS Date: Mon, 20 Apr 2015 15:27:52 +1000 Message-ID: <20150420052558.26554.97143.stgit@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: linux-cachefs@vger.kernel.org, Dave Chinner , linux-kernel@vger.kernel.org, Christoph Hellwig , linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org To: David Howells , Chris Mason , Al Viro , Josef Bacik , David Sterba Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org 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(-) -- Signature