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authorBob Peterson <rpeterso@redhat.com>2019-04-17 12:04:27 -0600
committerAndreas Gruenbacher <agruenba@redhat.com>2020-06-05 21:24:25 +0200
commitb839dadae8721eaf7245fcef3d67d82b95d00c77 (patch)
treedb9eea99ecc90574e519e6555bc1b4937ebe7ba1 /fs/gfs2/util.h
parentcbcc89b630447ec7836aa2b9242d9bb1725f5a61 (diff)
downloadlinux-b839dadae8721eaf7245fcef3d67d82b95d00c77.tar.bz2
gfs2: new slab for transactions
This patch adds a new slab for gfs2 transactions. That allows us to reduce kernel memory fragmentation, have better organization of data for analysis of vmcore dumps. A new centralized function is added to free the slab objects, and it exposes use-after-free by giving warnings if a transaction is freed while it still has bd elements attached to its buffers or ail lists. We make sure to initialize those transaction ail lists so we can check their integrity when freeing. At a later time, we should add a slab initialization function to make it more efficient, but for this initial patch I wanted to minimize the impact. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/util.h')
-rw-r--r--fs/gfs2/util.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
index a3542560da6f..6d9157efe16c 100644
--- a/fs/gfs2/util.h
+++ b/fs/gfs2/util.h
@@ -172,6 +172,7 @@ extern struct kmem_cache *gfs2_bufdata_cachep;
extern struct kmem_cache *gfs2_rgrpd_cachep;
extern struct kmem_cache *gfs2_quotad_cachep;
extern struct kmem_cache *gfs2_qadata_cachep;
+extern struct kmem_cache *gfs2_trans_cachep;
extern mempool_t *gfs2_page_pool;
extern struct workqueue_struct *gfs2_control_wq;