NeilBrown ef16cc5909 autofs4: d_manage() should return -EISDIR when appropriate in rcu-walk mode. ... If rcu-walk mode we don't *have* to return -EISDIR for non-mount-traps as we will simply drop into REF-walk and handling DCACHE_NEED_AUTOMOUNT dentrys the slow way. But it is better if we do when possible. In 'oz_mode', use the same condition as ref-walk: if not a mountpoint, then it must be -EISDIR. In regular mode there are most tests needed. Most of them can be performed without taking any spinlocks. If we find a directory that isn't obviously empty, and isn't mounted on, we need to call 'simple_empty()' which does take a spinlock. If this turned out to hurt performance, some other approach could be found to signal when a directory is known to be empty. Signed-off-by: NeilBrown <neilb@suse.de> Reviewed-by: Ian Kent <raven@themaw.net> Tested-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-10-14 02:18:16 +02:00
..
autofs_i.h	autofs4: avoid taking fs_lock during rcu-walk	2014-10-14 02:18:16 +02:00
dev-ioctl.c	autofs4: allow RCU-walk to walk through autofs4	2014-10-14 02:18:16 +02:00
expire.c	autofs4: avoid taking fs_lock during rcu-walk	2014-10-14 02:18:16 +02:00
init.c
inode.c
Kconfig
Makefile
root.c	autofs4: d_manage() should return -EISDIR when appropriate in rcu-walk mode.	2014-10-14 02:18:16 +02:00
symlink.c
waitq.c