[PATCH] ext4: slab caches set to SLAB_MEM_SPREAD flags.
From: Namjae Jeon <hidden>
Date: 2011-11-16 15:04:35
Also in:
lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
If slab caches set to SLAB_MEM_SPREAD flags, The allocation is spread evenly over all the memory nodes instead of favoring allocation on the node local to current cpu. Signed-off-by: Namjae Jeon <redacted> Signed-off-by: Amit Sahrawat <redacted> --- fs/ext4/mballoc.c | 9 +++++---- fs/ext4/page-io.c | 6 ++++-- 2 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index e2d8be8..86efde7 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c@@ -2407,7 +2407,8 @@ static int ext4_groupinfo_create_slab(size_t size) bb_counters[blocksize_bits + 2]); cachep = kmem_cache_create(ext4_groupinfo_slab_names[cache_index], - slab_size, 0, SLAB_RECLAIM_ACCOUNT, + slab_size, 0, SLAB_RECLAIM_ACCOUNT | + SLAB_MEM_SPREAD, NULL); ext4_groupinfo_caches[cache_index] = cachep;
@@ -2730,19 +2731,19 @@ static void ext4_remove_debugfs_entry(void) int __init ext4_init_mballoc(void) { ext4_pspace_cachep = KMEM_CACHE(ext4_prealloc_space, - SLAB_RECLAIM_ACCOUNT); + SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD); if (ext4_pspace_cachep == NULL) return -ENOMEM; ext4_ac_cachep = KMEM_CACHE(ext4_allocation_context, - SLAB_RECLAIM_ACCOUNT); + SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD); if (ext4_ac_cachep == NULL) { kmem_cache_destroy(ext4_pspace_cachep); return -ENOMEM; } ext4_free_ext_cachep = KMEM_CACHE(ext4_free_data, - SLAB_RECLAIM_ACCOUNT); + SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD); if (ext4_free_ext_cachep == NULL) { kmem_cache_destroy(ext4_pspace_cachep); kmem_cache_destroy(ext4_ac_cachep);
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 7ce1d0b..4f848e0 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c@@ -34,10 +34,12 @@ static struct kmem_cache *io_page_cachep, *io_end_cachep; int __init ext4_init_pageio(void) { - io_page_cachep = KMEM_CACHE(ext4_io_page, SLAB_RECLAIM_ACCOUNT); + io_page_cachep = KMEM_CACHE(ext4_io_page, SLAB_RECLAIM_ACCOUNT | + SLAB_MEM_SPREAD); if (io_page_cachep == NULL) return -ENOMEM; - io_end_cachep = KMEM_CACHE(ext4_io_end, SLAB_RECLAIM_ACCOUNT); + io_end_cachep = KMEM_CACHE(ext4_io_end, SLAB_RECLAIM_ACCOUNT | + SLAB_MEM_SPREAD); if (io_end_cachep == NULL) { kmem_cache_destroy(io_page_cachep); return -ENOMEM;
--
1.7.4.4