GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-27 17:11:46 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

btrfs: Fix slab accounting flags

Browse source 
BTRFS is using a variety of slab caches to satisfy internal needs.
Those slab caches are always allocated with the SLAB_RECLAIM_ACCOUNT,
meaning allocations from the caches are going to be accounted as
SReclaimable. At the same time btrfs is not registering any shrinkers
whatsoever, thus preventing memory from the slabs to be shrunk. This
means those caches are not in fact reclaimable.

To fix this remove the SLAB_RECLAIM_ACCOUNT on all caches apart from the
inode cache, since this one is being freed by the generic VFS super_block
shrinker. Also set the transaction related caches as SLAB_TEMPORARY,
to better document the lifetime of the objects (it just translates
to SLAB_RECLAIM_ACCOUNT).

Signed-off-by: Nikolay Borisov <n.borisov.lkml@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2016-06-23 21:17:08 +03:00 • committed by David Sterba
parent 7af7c616fa
commit fba4b69771
9 changed files with 16 additions and 16 deletions
Download patch file Download diff file Expand all files Collapse all files

2
fs/btrfs/delayed-inode.c
View file

@ -34,7 +34,7 @@ int __init btrfs_delayed_inode_init(void)
delayed_node_cache = kmem_cache_create("btrfs_delayed_node",
sizeof(struct btrfs_delayed_node),
0,
SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD,
SLAB_MEM_SPREAD,
NULL);
if (!delayed_node_cache)
return -ENOMEM;