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-rw-r--r--fs/ocfs2/dlmglue.c34
-rw-r--r--fs/ocfs2/stack_o2cb.c22
-rw-r--r--fs/ocfs2/stack_user.c29
-rw-r--r--fs/ocfs2/stackglue.c19
-rw-r--r--fs/ocfs2/stackglue.h42
5 files changed, 70 insertions, 76 deletions
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index e044019..1ba67df 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -297,6 +297,11 @@ static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
lockres->l_type == OCFS2_LOCK_TYPE_OPEN;
}
+static inline struct ocfs2_lock_res *ocfs2_lksb_to_lock_res(union ocfs2_dlm_lksb *lksb)
+{
+ return container_of(lksb, struct ocfs2_lock_res, l_lksb);
+}
+
static inline struct inode *ocfs2_lock_res_inode(struct ocfs2_lock_res *lockres)
{
BUG_ON(!ocfs2_is_inode_lock(lockres));
@@ -1041,9 +1046,9 @@ static unsigned int lockres_set_pending(struct ocfs2_lock_res *lockres)
}
-static void ocfs2_blocking_ast(void *opaque, int level)
+static void ocfs2_blocking_ast(union ocfs2_dlm_lksb *lksb, int level)
{
- struct ocfs2_lock_res *lockres = opaque;
+ struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);
int needs_downconvert;
unsigned long flags;
@@ -1072,9 +1077,9 @@ static void ocfs2_blocking_ast(void *opaque, int level)
ocfs2_wake_downconvert_thread(osb);
}
-static void ocfs2_locking_ast(void *opaque)
+static void ocfs2_locking_ast(union ocfs2_dlm_lksb *lksb)
{
- struct ocfs2_lock_res *lockres = opaque;
+ struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);
unsigned long flags;
int status;
@@ -1189,8 +1194,7 @@ static int ocfs2_lock_create(struct ocfs2_super *osb,
&lockres->l_lksb,
dlm_flags,
lockres->l_name,
- OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, gen, osb);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
@@ -1421,8 +1425,7 @@ again:
&lockres->l_lksb,
lkm_flags,
lockres->l_name,
- OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, gen, osb);
if (ret) {
if (!(lkm_flags & DLM_LKF_NOQUEUE) ||
@@ -1859,8 +1862,7 @@ int ocfs2_file_lock(struct file *file, int ex, int trylock)
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret = ocfs2_dlm_lock(osb->cconn, level, &lockres->l_lksb, lkm_flags,
- lockres->l_name, OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ lockres->l_name, OCFS2_LOCK_ID_MAX_LEN - 1);
if (ret) {
if (!trylock || (ret != -EAGAIN)) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
@@ -3056,9 +3058,9 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb,
mlog_exit_void();
}
-static void ocfs2_unlock_ast(void *opaque, int error)
+static void ocfs2_unlock_ast(union ocfs2_dlm_lksb *lksb, int error)
{
- struct ocfs2_lock_res *lockres = opaque;
+ struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
unsigned long flags;
mlog_entry_void();
@@ -3167,8 +3169,7 @@ static int ocfs2_drop_lock(struct ocfs2_super *osb,
mlog(0, "lock %s\n", lockres->l_name);
- ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb, lkm_flags,
- lockres);
+ ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb, lkm_flags);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_unlock", ret, lockres);
mlog(ML_ERROR, "lockres flags: %lu\n", lockres->l_flags);
@@ -3309,8 +3310,7 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
&lockres->l_lksb,
dlm_flags,
lockres->l_name,
- OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, generation, osb);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
@@ -3365,7 +3365,7 @@ static int ocfs2_cancel_convert(struct ocfs2_super *osb,
mlog(0, "lock %s\n", lockres->l_name);
ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb,
- DLM_LKF_CANCEL, lockres);
+ DLM_LKF_CANCEL);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_unlock", ret, lockres);
ocfs2_recover_from_dlm_error(lockres, 0);
diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c
index 3038c92..c4cedff 100644
--- a/fs/ocfs2/stack_o2cb.c
+++ b/fs/ocfs2/stack_o2cb.c
@@ -161,20 +161,26 @@ static int dlm_status_to_errno(enum dlm_status status)
static void o2dlm_lock_ast_wrapper(void *astarg)
{
+ union ocfs2_dlm_lksb *lksb = astarg;
+
BUG_ON(o2cb_stack.sp_proto == NULL);
- o2cb_stack.sp_proto->lp_lock_ast(astarg);
+ o2cb_stack.sp_proto->lp_lock_ast(lksb);
}
static void o2dlm_blocking_ast_wrapper(void *astarg, int level)
{
+ union ocfs2_dlm_lksb *lksb = astarg;
+
BUG_ON(o2cb_stack.sp_proto == NULL);
- o2cb_stack.sp_proto->lp_blocking_ast(astarg, level);
+ o2cb_stack.sp_proto->lp_blocking_ast(lksb, level);
}
static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
{
+ union ocfs2_dlm_lksb *lksb = astarg;
+
int error = dlm_status_to_errno(status);
BUG_ON(o2cb_stack.sp_proto == NULL);
@@ -193,7 +199,7 @@ static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
if (status == DLM_CANCELGRANT)
return;
- o2cb_stack.sp_proto->lp_unlock_ast(astarg, error);
+ o2cb_stack.sp_proto->lp_unlock_ast(lksb, error);
}
static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
@@ -201,8 +207,7 @@ static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- void *astarg)
+ unsigned int namelen)
{
enum dlm_status status;
int o2dlm_mode = mode_to_o2dlm(mode);
@@ -211,7 +216,7 @@ static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
status = dlmlock(conn->cc_lockspace, o2dlm_mode, &lksb->lksb_o2dlm,
o2dlm_flags, name, namelen,
- o2dlm_lock_ast_wrapper, astarg,
+ o2dlm_lock_ast_wrapper, lksb,
o2dlm_blocking_ast_wrapper);
ret = dlm_status_to_errno(status);
return ret;
@@ -219,15 +224,14 @@ static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
static int o2cb_dlm_unlock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
- u32 flags,
- void *astarg)
+ u32 flags)
{
enum dlm_status status;
int o2dlm_flags = flags_to_o2dlm(flags);
int ret;
status = dlmunlock(conn->cc_lockspace, &lksb->lksb_o2dlm,
- o2dlm_flags, o2dlm_unlock_ast_wrapper, astarg);
+ o2dlm_flags, o2dlm_unlock_ast_wrapper, lksb);
ret = dlm_status_to_errno(status);
return ret;
}
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index da78a2a..129b931 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -25,7 +25,6 @@
#include <linux/reboot.h>
#include <asm/uaccess.h>
-#include "ocfs2.h" /* For struct ocfs2_lock_res */
#include "stackglue.h"
#include <linux/dlm_plock.h>
@@ -664,16 +663,10 @@ static void ocfs2_control_exit(void)
-rc);
}
-static struct dlm_lksb *fsdlm_astarg_to_lksb(void *astarg)
-{
- struct ocfs2_lock_res *res = astarg;
- return &res->l_lksb.lksb_fsdlm;
-}
-
static void fsdlm_lock_ast_wrapper(void *astarg)
{
- struct dlm_lksb *lksb = fsdlm_astarg_to_lksb(astarg);
- int status = lksb->sb_status;
+ union ocfs2_dlm_lksb *lksb = astarg;
+ int status = lksb->lksb_fsdlm.sb_status;
BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
@@ -688,16 +681,18 @@ static void fsdlm_lock_ast_wrapper(void *astarg)
*/
if (status == -DLM_EUNLOCK || status == -DLM_ECANCEL)
- ocfs2_user_plugin.sp_proto->lp_unlock_ast(astarg, 0);
+ ocfs2_user_plugin.sp_proto->lp_unlock_ast(lksb, 0);
else
- ocfs2_user_plugin.sp_proto->lp_lock_ast(astarg);
+ ocfs2_user_plugin.sp_proto->lp_lock_ast(lksb);
}
static void fsdlm_blocking_ast_wrapper(void *astarg, int level)
{
+ union ocfs2_dlm_lksb *lksb = astarg;
+
BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
- ocfs2_user_plugin.sp_proto->lp_blocking_ast(astarg, level);
+ ocfs2_user_plugin.sp_proto->lp_blocking_ast(lksb, level);
}
static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
@@ -705,8 +700,7 @@ static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- void *astarg)
+ unsigned int namelen)
{
int ret;
@@ -716,20 +710,19 @@ static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
ret = dlm_lock(conn->cc_lockspace, mode, &lksb->lksb_fsdlm,
flags|DLM_LKF_NODLCKWT, name, namelen, 0,
- fsdlm_lock_ast_wrapper, astarg,
+ fsdlm_lock_ast_wrapper, lksb,
fsdlm_blocking_ast_wrapper);
return ret;
}
static int user_dlm_unlock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
- u32 flags,
- void *astarg)
+ u32 flags)
{
int ret;
ret = dlm_unlock(conn->cc_lockspace, lksb->lksb_fsdlm.sb_lkid,
- flags, &lksb->lksb_fsdlm, astarg);
+ flags, &lksb->lksb_fsdlm, lksb);
return ret;
}
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index f3df0ba..3500d98 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -233,35 +233,32 @@ EXPORT_SYMBOL_GPL(ocfs2_stack_glue_set_locking_protocol);
/*
- * The ocfs2_dlm_lock() and ocfs2_dlm_unlock() functions take
- * "struct ocfs2_lock_res *astarg" instead of "void *astarg" because the
- * underlying stack plugins need to pilfer the lksb off of the lock_res.
- * If some other structure needs to be passed as an astarg, the plugins
- * will need to be given a different avenue to the lksb.
+ * The ocfs2_dlm_lock() and ocfs2_dlm_unlock() functions take no argument
+ * for the ast and bast functions. They will pass the lksb to the ast
+ * and bast. The caller can wrap the lksb with their own structure to
+ * get more information.
*/
int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,
int mode,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- struct ocfs2_lock_res *astarg)
+ unsigned int namelen)
{
BUG_ON(lproto == NULL);
return active_stack->sp_ops->dlm_lock(conn, mode, lksb, flags,
- name, namelen, astarg);
+ name, namelen);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lock);
int ocfs2_dlm_unlock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
- u32 flags,
- struct ocfs2_lock_res *astarg)
+ u32 flags)
{
BUG_ON(lproto == NULL);
- return active_stack->sp_ops->dlm_unlock(conn, lksb, flags, astarg);
+ return active_stack->sp_ops->dlm_unlock(conn, lksb, flags);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_unlock);
diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index 03a44d6..d699117 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -56,17 +56,6 @@ struct ocfs2_protocol_version {
};
/*
- * The ocfs2_locking_protocol defines the handlers called on ocfs2's behalf.
- */
-struct ocfs2_locking_protocol {
- struct ocfs2_protocol_version lp_max_version;
- void (*lp_lock_ast)(void *astarg);
- void (*lp_blocking_ast)(void *astarg, int level);
- void (*lp_unlock_ast)(void *astarg, int error);
-};
-
-
-/*
* The dlm_lockstatus struct includes lvb space, but the dlm_lksb struct only
* has a pointer to separately allocated lvb space. This struct exists only to
* include in the lksb union to make space for a combined dlm_lksb and lvb.
@@ -88,6 +77,17 @@ union ocfs2_dlm_lksb {
};
/*
+ * The ocfs2_locking_protocol defines the handlers called on ocfs2's behalf.
+ */
+struct ocfs2_locking_protocol {
+ struct ocfs2_protocol_version lp_max_version;
+ void (*lp_lock_ast)(union ocfs2_dlm_lksb *lksb);
+ void (*lp_blocking_ast)(union ocfs2_dlm_lksb *lksb, int level);
+ void (*lp_unlock_ast)(union ocfs2_dlm_lksb *lksb, int error);
+};
+
+
+/*
* A cluster connection. Mostly opaque to ocfs2, the connection holds
* state for the underlying stack. ocfs2 does use cc_version to determine
* locking compatibility.
@@ -155,27 +155,29 @@ struct ocfs2_stack_operations {
*
* ast and bast functions are not part of the call because the
* stack will likely want to wrap ast and bast calls before passing
- * them to stack->sp_proto.
+ * them to stack->sp_proto. There is no astarg. The lksb will
+ * be passed back to the ast and bast functions. The caller can
+ * use this to find their object.
*/
int (*dlm_lock)(struct ocfs2_cluster_connection *conn,
int mode,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- void *astarg);
+ unsigned int namelen);
/*
* Call the underlying dlm unlock function. The ->dlm_unlock()
* function should convert the flags as appropriate.
*
* The unlock ast is not passed, as the stack will want to wrap
- * it before calling stack->sp_proto->lp_unlock_ast().
+ * it before calling stack->sp_proto->lp_unlock_ast(). There is
+ * no astarg. The lksb will be passed back to the unlock ast
+ * function. The caller can use this to find their object.
*/
int (*dlm_unlock)(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
- u32 flags,
- void *astarg);
+ u32 flags);
/*
* Return the status of the current lock status block. The fs
@@ -249,12 +251,10 @@ int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- struct ocfs2_lock_res *astarg);
+ unsigned int namelen);
int ocfs2_dlm_unlock(struct ocfs2_cluster_connection *conn,
union ocfs2_dlm_lksb *lksb,
- u32 flags,
- struct ocfs2_lock_res *astarg);
+ u32 flags);
int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb);
int ocfs2_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb);
generated by cgit v1.1 at 2024-12-27 09:50:28 +0000