[PATCH] 9p: Avoid creating multiple slab caches with the same name
From: Pedro Falcato
Date: Wed Aug 07 2024 - 05:47:40 EST
In the spirit of [1], avoid creating multiple slab caches with the same
name. Instead, add the dev_name into the mix.
[1]: https://lore.kernel.org/all/20240807090746.2146479-1-pedro.falcato@xxxxxxxxx/
Signed-off-by: Pedro Falcato <pedro.falcato@xxxxxxxxx>
---
net/9p/client.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/net/9p/client.c b/net/9p/client.c
index 5cd94721d97..9e7b9151816 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -979,6 +979,7 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
int err;
struct p9_client *clnt;
char *client_id;
+ char *cache_name;
clnt = kmalloc(sizeof(*clnt), GFP_KERNEL);
if (!clnt)
@@ -1035,15 +1036,22 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
if (err)
goto close_trans;
+ cache_name = kasprintf(GFP_KERNEL, "9p-fcall-cache-%s", dev_name);
+ if (!cache_name) {
+ err = -ENOMEM;
+ goto close_trans;
+ }
+
/* P9_HDRSZ + 4 is the smallest packet header we can have that is
* followed by data accessed from userspace by read
*/
clnt->fcall_cache =
- kmem_cache_create_usercopy("9p-fcall-cache", clnt->msize,
+ kmem_cache_create_usercopy(cache_name, clnt->msize,
0, 0, P9_HDRSZ + 4,
clnt->msize - (P9_HDRSZ + 4),
NULL);
+ kfree(cache_name);
return clnt;
close_trans:
--
2.46.0