The patch titled
Subject: fs/namespace: convert devname allocation to kstrdup_const
has been removed from the -mm tree. Its filename was
fs-namespace-convert-devname-allocation-to-kstrdup_const.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
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
origin.patch
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