]> git.karo-electronics.de Git - linux-beck.git/commit
fs: dcache scale subdirs
authorNick Piggin <npiggin@kernel.dk>
Fri, 7 Jan 2011 06:49:34 +0000 (17:49 +1100)
committerNick Piggin <npiggin@kernel.dk>
Fri, 7 Jan 2011 06:50:21 +0000 (17:50 +1100)
commit2fd6b7f50797f2e993eea59e0a0b8c6399c811dc
treece33b94b34844c09103836cf4cfa4364b742f217
parentda5029563a0a026c64821b09e8e7b4fd81d3fe1b
fs: dcache scale subdirs

Protect d_subdirs and d_child with d_lock, except in filesystems that aren't
using dcache_lock for these anyway (eg. using i_mutex).

Note: if we change the locking rule in future so that ->d_child protection is
provided only with ->d_parent->d_lock, it may allow us to reduce some locking.
But it would be an exception to an otherwise regular locking scheme, so we'd
have to see some good results. Probably not worthwhile.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>
16 files changed:
drivers/staging/smbfs/cache.c
drivers/usb/core/inode.c
fs/autofs4/autofs_i.h
fs/autofs4/expire.c
fs/autofs4/root.c
fs/ceph/dir.c
fs/ceph/inode.c
fs/coda/cache.c
fs/dcache.c
fs/libfs.c
fs/ncpfs/dir.c
fs/ncpfs/ncplib_kernel.h
fs/notify/fsnotify.c
include/linux/dcache.h
kernel/cgroup.c
security/selinux/selinuxfs.c