From 2f120c05e67ae34c93786b1050c6828904314429 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Thu, 10 Nov 2011 20:45:05 -0500 Subject: [PATCH] Btrfs: only map pages if we know we need them when reading the space cache People have been running into a warning when loading space cache because the page is already mapped when trying to read in a bitmap. The way we read in entries and pages is kind of convoluted, so fix it so that io_ctl_read_entry maps the entries if it needs to, and if it hits the end of the page it simply unmaps the page. That way we can unconditionally unmap the io_ctl before reading in the bitmap and we should stop hitting these warnings. Thanks, Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- Reading git-format-patch failed