The patch titled
Subject: fs/namespace: convert devname allocation to kstrdup_const
has been added to the -mm tree. Its filename is
fs-namespace-convert-devname-allocation-to-kstrdup_const.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/fs-namespace-convert-devname-allocation-to-kstrdup_const.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/fs-namespace-convert-devname-allocation-to-kstrdup_const.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Subject: fs/namespace: convert devname allocation to kstrdup_const
VFS frequently performs duplication of strings located in read-only memory
section. Replacing kstrdup by kstrdup_const allows to avoid such
operations.
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Cc: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Cc: Mike Turquette <mturquette@xxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/namespace.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN fs/namespace.c~fs-namespace-convert-devname-allocation-to-kstrdup_const fs/namespace.c
--- a/fs/namespace.c~fs-namespace-convert-devname-allocation-to-kstrdup_const
+++ a/fs/namespace.c
@@ -201,7 +201,7 @@ static struct mount *alloc_vfsmnt(const
goto out_free_cache;
if (name) {
- mnt->mnt_devname = kstrdup(name, GFP_KERNEL);
+ mnt->mnt_devname = kstrdup_const(name, GFP_KERNEL);
if (!mnt->mnt_devname)
goto out_free_id;
}
@@ -234,7 +234,7 @@ static struct mount *alloc_vfsmnt(const
#ifdef CONFIG_SMP
out_free_devname:
- kfree(mnt->mnt_devname);
+ kfree_const(mnt->mnt_devname);
#endif
out_free_id:
mnt_free_id(mnt);
@@ -568,7 +568,7 @@ int sb_prepare_remount_readonly(struct s
static void free_vfsmnt(struct mount *mnt)
{
- kfree(mnt->mnt_devname);
+ kfree_const(mnt->mnt_devname);
#ifdef CONFIG_SMP
free_percpu(mnt->mnt_pcp);
#endif
_
Patches currently in -mm which might be from a.hajda@xxxxxxxxxxx are
mm-util-add-kstrdup_const.patch
kernfs-convert-node-name-allocation-to-kstrdup_const.patch
clk-convert-clock-name-allocations-to-kstrdup_const.patch
mm-slab-convert-cache-name-allocations-to-kstrdup_const.patch
fs-namespace-convert-devname-allocation-to-kstrdup_const.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
