Commits
Liu Bo committed 1f12bd06328
Btrfs: fix the mismatch of page->mapping commit 600a45e1d5e376f679ff9ecc4ce9452710a6d27c (Btrfs: fix deadlock on page lock when doing auto-defragment) fixes the deadlock on page, but it also introduces another bug. A page may have been truncated after unlock & lock. So we need to find it again to get the right one. And since we've held i_mutex lock, inode size remains unchanged and we can drop isize overflow checks. Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>