* [PATCH 00/39] drop null test before destroy functions
@ 2015-09-13 12:14 Julia Lawall
[not found] ` <1442146532-9100-1-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
2015-09-14 11:55 ` [PATCH 00/39] " SF Markus Elfring
0 siblings, 2 replies; 4+ messages in thread
From: Julia Lawall @ 2015-09-13 12:14 UTC (permalink / raw)
To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA,
dccp-u79uwXL29TY76Z2rM5mHXA,
dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
intel-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW,
ecryptfs-u79uwXL29TY76Z2rM5mHXA, dmaengine-u79uwXL29TY76Z2rM5mHXA
Cc: linux-usb-u79uwXL29TY76Z2rM5mHXA, kvm-u79uwXL29TY76Z2rM5mHXA,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA,
HPDD-discuss-hn68Rpc1hR1g9hUCZPvPmw,
linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
ocfs2-devel-N0ozoZBvEnrZJqsBc5GL+g, Carolyn Wyborny,
ceph-devel-u79uwXL29TY76Z2rM5mHXA,
devel-gWbeCf7V1WCQmaza687I9mD2FQJk+8+b,
linux-nilfs-u79uwXL29TY76Z2rM5mHXA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA, Don Skidmore,
linux-atm-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f,
Jesse Brandeburg, cluster-devel-H+wXaHxf7aLQT0dZR+AlfA,
Matthew Vick, intel-wired-lan-qjLDD68F18P21nG7glBr7A,
linux-ext4-u79uwXL29TY76Z2rM5mHXA, Mitch Williams, Chao Yu,
linux-raid-u79uwXL29TY76Z2rM5mHXA,
linux-bcache-u79uwXL29TY76Z2rM5mHXA, Dan Williams,
linux-nfs-u79uwXL29TY76Z2rM5mHXA, netdev-u79uwXL29TY76Z2rM5mHXA,
Shannon Nelson, linux-kernel-u79uwXL29TaqPxH82wqD4g
Recent commits to kernel/git/torvalds/linux.git have made the following
functions able to tolerate NULL arguments:
kmem_cache_destroy (commit 3942d29918522)
mempool_destroy (commit 4e3ca3e033d1)
dma_pool_destroy (commit 44d7175da6ea)
These patches remove the associated NULL tests for the files that I found
easy to compile test. If these changes are OK, I will address the
remainder later.
---
arch/x86/kvm/mmu.c | 6 --
block/bio-integrity.c | 7 --
block/bio.c | 7 --
block/blk-core.c | 3 -
block/elevator.c | 3 -
drivers/atm/he.c | 7 --
drivers/block/aoe/aoedev.c | 3 -
drivers/block/drbd/drbd_main.c | 21 ++-----
drivers/block/pktcdvd.c | 3 -
drivers/block/rbd.c | 6 --
drivers/dma/dmaengine.c | 6 --
drivers/firmware/google/gsmi.c | 3 -
drivers/gpu/drm/i915/i915_dma.c | 19 ++----
drivers/iommu/amd_iommu_init.c | 7 --
drivers/md/bcache/bset.c | 3 -
drivers/md/bcache/request.c | 3 -
drivers/md/bcache/super.c | 9 +--
drivers/md/dm-bufio.c | 3 -
drivers/md/dm-cache-target.c | 3 -
drivers/md/dm-crypt.c | 6 --
drivers/md/dm-io.c | 3 -
drivers/md/dm-log-userspace-base.c | 3 -
drivers/md/dm-region-hash.c | 4 -
drivers/md/dm.c | 13 +---
drivers/md/multipath.c | 3 -
drivers/md/raid1.c | 6 --
drivers/md/raid10.c | 9 +--
drivers/md/raid5.c | 3 -
drivers/mtd/nand/nandsim.c | 3 -
drivers/mtd/ubi/attach.c | 4 -
drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c | 3 -
drivers/staging/lustre/lustre/llite/super25.c | 16 +----
drivers/staging/lustre/lustre/obdclass/genops.c | 24 ++------
drivers/staging/lustre/lustre/obdclass/lu_object.c | 6 --
drivers/staging/rdma/hfi1/user_sdma.c | 3 -
drivers/thunderbolt/ctl.c | 3 -
drivers/usb/gadget/udc/bdc/bdc_core.c | 3 -
drivers/usb/gadget/udc/gr_udc.c | 3 -
drivers/usb/gadget/udc/mv_u3d_core.c | 3 -
drivers/usb/gadget/udc/mv_udc_core.c | 3 -
drivers/usb/host/fotg210-hcd.c | 12 +---
drivers/usb/host/fusbh200-hcd.c | 12 +---
drivers/usb/host/whci/init.c | 3 -
drivers/usb/host/xhci-mem.c | 12 +---
fs/btrfs/backref.c | 3 -
fs/btrfs/delayed-inode.c | 3 -
fs/btrfs/delayed-ref.c | 12 +---
fs/btrfs/disk-io.c | 3 -
fs/btrfs/extent_io.c | 6 --
fs/btrfs/extent_map.c | 3 -
fs/btrfs/file.c | 3 -
fs/btrfs/inode.c | 18 ++----
fs/btrfs/ordered-data.c | 3 -
fs/dlm/memory.c | 6 --
fs/ecryptfs/main.c | 3 -
fs/ext4/crypto.c | 9 +--
fs/ext4/extents_status.c | 3 -
fs/ext4/mballoc.c | 3 -
fs/f2fs/crypto.c | 9 +--
fs/gfs2/main.c | 29 ++--------
fs/jbd2/journal.c | 15 +----
fs/jbd2/revoke.c | 12 +---
fs/jbd2/transaction.c | 6 --
fs/jffs2/malloc.c | 27 +++------
fs/nfsd/nfscache.c | 6 --
fs/nilfs2/super.c | 12 +---
fs/ocfs2/dlm/dlmlock.c | 3 -
fs/ocfs2/dlm/dlmmaster.c | 16 +----
fs/ocfs2/super.c | 18 ++----
fs/ocfs2/uptodate.c | 3 -
lib/debugobjects.c | 3 -
net/core/sock.c | 12 +---
net/dccp/ackvec.c | 12 +---
net/dccp/ccid.c | 3 -
net/sunrpc/sched.c | 12 +---
75 files changed, 180 insertions(+), 381 deletions(-)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH 02/39] nilfs2: drop null test before destroy functions
[not found] ` <1442146532-9100-1-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
@ 2015-09-13 12:14 ` Julia Lawall
[not found] ` <1442146532-9100-3-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Julia Lawall @ 2015-09-13 12:14 UTC (permalink / raw)
To: Ryusuke Konishi
Cc: sergey.senozhatsky-Re5JQEeQqe8AvxtiuMwx3w,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA,
linux-nilfs-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
Remove unneeded NULL test.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@ expression x; @@
-if (x != NULL)
\(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
---
fs/nilfs2/super.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index f47585b..c69455a 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -1405,14 +1405,10 @@ static void nilfs_destroy_cachep(void)
*/
rcu_barrier();
- if (nilfs_inode_cachep)
- kmem_cache_destroy(nilfs_inode_cachep);
- if (nilfs_transaction_cachep)
- kmem_cache_destroy(nilfs_transaction_cachep);
- if (nilfs_segbuf_cachep)
- kmem_cache_destroy(nilfs_segbuf_cachep);
- if (nilfs_btree_path_cache)
- kmem_cache_destroy(nilfs_btree_path_cache);
+ kmem_cache_destroy(nilfs_inode_cachep);
+ kmem_cache_destroy(nilfs_transaction_cachep);
+ kmem_cache_destroy(nilfs_segbuf_cachep);
+ kmem_cache_destroy(nilfs_btree_path_cache);
}
static int __init nilfs_init_cachep(void)
--
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^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 02/39] nilfs2: drop null test before destroy functions
[not found] ` <1442146532-9100-3-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
@ 2015-09-14 3:29 ` Ryusuke Konishi
0 siblings, 0 replies; 4+ messages in thread
From: Ryusuke Konishi @ 2015-09-14 3:29 UTC (permalink / raw)
To: Julia Lawall
Cc: sergey.senozhatsky-Re5JQEeQqe8AvxtiuMwx3w,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA,
linux-nilfs-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA
On Sun, 13 Sep 2015 14:14:55 +0200, Julia Lawall <Julia.Lawall-L2FTfq7BK8M@public.gmane.org> wrote:
> Remove unneeded NULL test.
>
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @@ expression x; @@
> -if (x != NULL)
> \(kmem_cache_destroy\|mempool_destroy\|dma_pool_destroy\)(x);
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
Looks OK. I'll queue this in my tree.
Thanks,
Ryusuke Konishi
>
> ---
> fs/nilfs2/super.c | 12 ++++--------
> 1 file changed, 4 insertions(+), 8 deletions(-)
>
> diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
> index f47585b..c69455a 100644
> --- a/fs/nilfs2/super.c
> +++ b/fs/nilfs2/super.c
> @@ -1405,14 +1405,10 @@ static void nilfs_destroy_cachep(void)
> */
> rcu_barrier();
>
> - if (nilfs_inode_cachep)
> - kmem_cache_destroy(nilfs_inode_cachep);
> - if (nilfs_transaction_cachep)
> - kmem_cache_destroy(nilfs_transaction_cachep);
> - if (nilfs_segbuf_cachep)
> - kmem_cache_destroy(nilfs_segbuf_cachep);
> - if (nilfs_btree_path_cache)
> - kmem_cache_destroy(nilfs_btree_path_cache);
> + kmem_cache_destroy(nilfs_inode_cachep);
> + kmem_cache_destroy(nilfs_transaction_cachep);
> + kmem_cache_destroy(nilfs_segbuf_cachep);
> + kmem_cache_destroy(nilfs_btree_path_cache);
> }
>
> static int __init nilfs_init_cachep(void)
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 00/39] drop null test before destroy functions
2015-09-13 12:14 [PATCH 00/39] drop null test before destroy functions Julia Lawall
[not found] ` <1442146532-9100-1-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
@ 2015-09-14 11:55 ` SF Markus Elfring
1 sibling, 0 replies; 4+ messages in thread
From: SF Markus Elfring @ 2015-09-14 11:55 UTC (permalink / raw)
To: Julia Lawall, kernel-janitors
Cc: iommu, dccp, dri-devel, intel-gfx, ecryptfs, dmaengine,
sergey.senozhatsky, Dan Williams, cluster-devel, intel-wired-lan,
Mitch Williams, John Ronciak, Matthew Vick, Don Skidmore,
Carolyn Wyborny, Shannon Nelson, Jesse Brandeburg, linux-nfs,
linux-raid, netdev, linux-atm-general, linux-btrfs, linux-nilfs,
linux-kernel, linux-mtd, linux-usb, linux
> Recent commits to kernel/git/torvalds/linux.git have made the following
> functions able to tolerate NULL arguments:
>
> kmem_cache_destroy (commit 3942d29918522)
> mempool_destroy (commit 4e3ca3e033d1)
> dma_pool_destroy (commit 44d7175da6ea)
How do you think about to extend an other SmPL script?
Related topic:
scripts/coccinelle/free: Delete NULL test before freeing functions
https://systeme.lip6.fr/pipermail/cocci/2015-May/001960.html
https://www.mail-archive.com/cocci@systeme.lip6.fr/msg01855.html
> If these changes are OK, I will address the remainder later.
Would anybody like to reuse my general SmPL approach for similar source
code clean-up?
Regards,
Markus
^ permalink raw reply [flat|nested] 4+ messages in thread
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2015-09-13 12:14 [PATCH 00/39] drop null test before destroy functions Julia Lawall
[not found] ` <1442146532-9100-1-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
2015-09-13 12:14 ` [PATCH 02/39] nilfs2: " Julia Lawall
[not found] ` <1442146532-9100-3-git-send-email-Julia.Lawall-L2FTfq7BK8M@public.gmane.org>
2015-09-14 3:29 ` Ryusuke Konishi
2015-09-14 11:55 ` [PATCH 00/39] " SF Markus Elfring
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