kybaaz/linux-xiaomi-chiron
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

cachefiles: Implement volume support

Browse source 
Implement support for creating the directory layout for a volume on disk
and setting up and withdrawing volume caching.

Each volume has a directory named for the volume key under the root of the
cache (prefixed with an 'I' to indicate to cachefilesd that it's an index)
and then creates a bunch of hash bucket subdirectories under that (named as
'@' plus a hex number) in which cookie files will be created.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/163819635314.215744.13081522301564537723.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906936397.143852.17788457778396467161.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967143860.1823006.7185205806080225038.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021545212.640689.5064821392307582927.stgit@warthog.procyon.org.uk/ # v4
This commit is contained in:
David Howells 2021-10-21 09:55:21 +01:00
parent d1065b0a6f
commit fe2140e2f5
6 changed files with 171 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

2
fs/cachefiles/daemon.c
View file

@ -105,6 +105,8 @@ static int cachefiles_daemon_open(struct inode *inode, struct file *file)
mutex_init(&cache->daemon_mutex);
init_waitqueue_head(&cache->daemon_pollwq);
INIT_LIST_HEAD(&cache->volumes);
spin_lock_init(&cache->object_list_lock);
/* set default caching limits
* - limit at 1% free space and/or free files