fs: avoid softlockups in s_inodes iterators
[ Upstream commit 04646aeb ] Anything that walks all inodes on sb->s_inodes list without rescheduling risks softlockups. Previous efforts were made in 2 functions, see: c27d82f5 fs/drop_caches.c: avoid softlockups in drop_pagecache_sb() ac05fbb4 inode: don't softlockup when evicting inodes but there hasn't been an audit of all walkers, so do that now. This also consistently moves the cond_resched() calls to the bottom of each loop in cases where it already exists. One loop remains: remove_dquot_ref(), because I'm not quite sure how to deal with that one w/o taking the i_lock. Signed-off-by:Eric Sandeen <sandeen@redhat.com> Reviewed-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Sasha Levin <sashal@kernel.org>
parent
2ac95310
Please register or sign in to comment