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| author | Bob Peterson <rpeterso@redhat.com> | 2019-04-17 20:04:27 +0200 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2020-06-05 21:24:25 +0200 |
| commit | b839dadae8721eaf7245fcef3d67d82b95d00c77 (patch) | |
| tree | db9eea99ecc90574e519e6555bc1b4937ebe7ba1 /fs/gfs2/util.c | |
| parent | gfs2: initialize transaction tr_ailX_lists earlier (diff) | |
| download | linux-b839dadae8721eaf7245fcef3d67d82b95d00c77.tar.xz linux-b839dadae8721eaf7245fcef3d67d82b95d00c77.zip | |
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.c')
| -rw-r--r-- | fs/gfs2/util.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c index aa087a5675af..1cd0328cae20 100644 --- a/fs/gfs2/util.c +++ b/fs/gfs2/util.c @@ -32,6 +32,7 @@ struct kmem_cache *gfs2_bufdata_cachep __read_mostly; struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; struct kmem_cache *gfs2_quotad_cachep __read_mostly; struct kmem_cache *gfs2_qadata_cachep __read_mostly; +struct kmem_cache *gfs2_trans_cachep __read_mostly; mempool_t *gfs2_page_pool __read_mostly; void gfs2_assert_i(struct gfs2_sbd *sdp) |