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| author | Bob Peterson <rpeterso@redhat.com> | 2019-04-17 12:04:27 -0600 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2020-06-05 21:24:25 +0200 |
| commit | b839dadae8721eaf7245fcef3d67d82b95d00c77 (patch) | |
| tree | db9eea99ecc90574e519e6555bc1b4937ebe7ba1 /fs/gfs2/trans.h | |
| parent | cbcc89b630447ec7836aa2b9242d9bb1725f5a61 (diff) | |
| download | lwn-b839dadae8721eaf7245fcef3d67d82b95d00c77.tar.gz lwn-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/trans.h')
| -rw-r--r-- | fs/gfs2/trans.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h index 6071334de035..83199ce5a5c5 100644 --- a/fs/gfs2/trans.h +++ b/fs/gfs2/trans.h @@ -42,5 +42,6 @@ extern void gfs2_trans_add_data(struct gfs2_glock *gl, struct buffer_head *bh); extern void gfs2_trans_add_meta(struct gfs2_glock *gl, struct buffer_head *bh); extern void gfs2_trans_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); extern void gfs2_trans_remove_revoke(struct gfs2_sbd *sdp, u64 blkno, unsigned int len); +extern void gfs2_trans_free(struct gfs2_sbd *sdp, struct gfs2_trans *tr); #endif /* __TRANS_DOT_H__ */ |