This is a note to let you know that I've just added the patch titled
fs: dlm: add union in dlm header for lockspace id
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fs-dlm-add-union-in-dlm-header-for-lockspace-id.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 71f0d42274ce9c8e45691969889cdd3b8b2663d2
Author: Alexander Aring <aahringo@xxxxxxxxxx>
Date: Fri May 21 15:08:45 2021 -0400
fs: dlm: add union in dlm header for lockspace id
[ Upstream commit 8e2e40860c7f67c0b19b13d92cfea03a19232ce2 ]
This patch adds union inside the lockspace id to handle it also for
another use case for a different dlm command.
Signed-off-by: Alexander Aring <aahringo@xxxxxxxxxx>
Signed-off-by: David Teigland <teigland@xxxxxxxxxx>
Stable-dep-of: aad633dc0cf9 ("fs: dlm: start midcomms before scand")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index cb287df13a7aa..0418fd4e316f7 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -379,7 +379,10 @@ static inline int rsb_flag(struct dlm_rsb *r, enum rsb_flags flag)
struct dlm_header {
uint32_t h_version;
- uint32_t h_lockspace;
+ union {
+ /* for DLM_MSG and DLM_RCOM */
+ uint32_t h_lockspace;
+ } u;
uint32_t h_nodeid; /* nodeid of sender */
uint16_t h_length;
uint8_t h_cmd; /* DLM_MSG, DLM_RCOM */
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index d4e204473e76b..0e2a92b1829e5 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -3550,7 +3550,7 @@ static int _create_message(struct dlm_ls *ls, int mb_len,
ms = (struct dlm_message *) mb;
ms->m_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
- ms->m_header.h_lockspace = ls->ls_global_id;
+ ms->m_header.u.h_lockspace = ls->ls_global_id;
ms->m_header.h_nodeid = dlm_our_nodeid();
ms->m_header.h_length = mb_len;
ms->m_header.h_cmd = DLM_MSG;
@@ -5054,16 +5054,16 @@ void dlm_receive_buffer(union dlm_packet *p, int nodeid)
if (hd->h_nodeid != nodeid) {
log_print("invalid h_nodeid %d from %d lockspace %x",
- hd->h_nodeid, nodeid, hd->h_lockspace);
+ hd->h_nodeid, nodeid, hd->u.h_lockspace);
return;
}
- ls = dlm_find_lockspace_global(hd->h_lockspace);
+ ls = dlm_find_lockspace_global(hd->u.h_lockspace);
if (!ls) {
if (dlm_config.ci_log_debug) {
printk_ratelimited(KERN_DEBUG "dlm: invalid lockspace "
"%u from %d cmd %d type %d\n",
- hd->h_lockspace, nodeid, hd->h_cmd, type);
+ hd->u.h_lockspace, nodeid, hd->h_cmd, type);
}
if (hd->h_cmd == DLM_RCOM && type == DLM_RCOM_STATUS)
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index 70c625999d368..b3fb808df1d4b 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -48,7 +48,7 @@ static int create_rcom(struct dlm_ls *ls, int to_nodeid, int type, int len,
rc = (struct dlm_rcom *) mb;
rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
- rc->rc_header.h_lockspace = ls->ls_global_id;
+ rc->rc_header.u.h_lockspace = ls->ls_global_id;
rc->rc_header.h_nodeid = dlm_our_nodeid();
rc->rc_header.h_length = mb_len;
rc->rc_header.h_cmd = DLM_RCOM;
@@ -469,7 +469,7 @@ int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in)
rc = (struct dlm_rcom *) mb;
rc->rc_header.h_version = (DLM_HEADER_MAJOR | DLM_HEADER_MINOR);
- rc->rc_header.h_lockspace = rc_in->rc_header.h_lockspace;
+ rc->rc_header.u.h_lockspace = rc_in->rc_header.u.h_lockspace;
rc->rc_header.h_nodeid = dlm_our_nodeid();
rc->rc_header.h_length = mb_len;
rc->rc_header.h_cmd = DLM_RCOM;
diff --git a/fs/dlm/util.c b/fs/dlm/util.c
index af9d9cbb8ff47..be773e539599d 100644
--- a/fs/dlm/util.c
+++ b/fs/dlm/util.c
@@ -25,7 +25,8 @@
void header_out(struct dlm_header *hd)
{
hd->h_version = cpu_to_le32(hd->h_version);
- hd->h_lockspace = cpu_to_le32(hd->h_lockspace);
+ /* does it for others u32 in union as well */
+ hd->u.h_lockspace = cpu_to_le32(hd->u.h_lockspace);
hd->h_nodeid = cpu_to_le32(hd->h_nodeid);
hd->h_length = cpu_to_le16(hd->h_length);
}
@@ -33,7 +34,8 @@ void header_out(struct dlm_header *hd)
void header_in(struct dlm_header *hd)
{
hd->h_version = le32_to_cpu(hd->h_version);
- hd->h_lockspace = le32_to_cpu(hd->h_lockspace);
+ /* does it for others u32 in union as well */
+ hd->u.h_lockspace = le32_to_cpu(hd->u.h_lockspace);
hd->h_nodeid = le32_to_cpu(hd->h_nodeid);
hd->h_length = le16_to_cpu(hd->h_length);
}
