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Subject[PATCH 09/62] ocfs2: Use global DLM_ constants in generic code.
Date
From: Joel Becker <joel.becker@oracle.com>

The ocfs2 generic code should use the values in <linux/dlmconstants.h>.
stackglue.c will convert them to o2dlm values.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/ocfs2/dlmglue.c | 140 +++++++++++++++++++++++++-------------------------
fs/ocfs2/stackglue.c | 71 +++++++++++++++++++++++---
fs/ocfs2/stackglue.h | 13 +++++
3 files changed, 147 insertions(+), 77 deletions(-)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index aea3bef..b8ac903 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -37,8 +37,6 @@
#include <cluster/nodemanager.h>
#include <cluster/tcp.h>

-#include <dlm/dlmapi.h>
-
#define MLOG_MASK_PREFIX ML_DLM_GLUE
#include <cluster/masklog.h>

@@ -317,7 +315,7 @@ static inline struct ocfs2_super *ocfs2_get_lockres_osb(struct ocfs2_lock_res *l
static int ocfs2_lock_create(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
- int dlm_flags);
+ u32 dlm_flags);
static inline int ocfs2_may_continue_on_blocked_lock(struct ocfs2_lock_res *lockres,
int wanted);
static void ocfs2_cluster_unlock(struct ocfs2_super *osb,
@@ -407,9 +405,9 @@ static void ocfs2_lock_res_init_common(struct ocfs2_super *osb,
res->l_ops = ops;
res->l_priv = priv;

- res->l_level = LKM_IVMODE;
- res->l_requested = LKM_IVMODE;
- res->l_blocking = LKM_IVMODE;
+ res->l_level = DLM_LOCK_IV;
+ res->l_requested = DLM_LOCK_IV;
+ res->l_blocking = DLM_LOCK_IV;
res->l_action = OCFS2_AST_INVALID;
res->l_unlock_action = OCFS2_UNLOCK_INVALID;

@@ -605,10 +603,10 @@ static inline void ocfs2_inc_holders(struct ocfs2_lock_res *lockres,
BUG_ON(!lockres);

switch(level) {
- case LKM_EXMODE:
+ case DLM_LOCK_EX:
lockres->l_ex_holders++;
break;
- case LKM_PRMODE:
+ case DLM_LOCK_PR:
lockres->l_ro_holders++;
break;
default:
@@ -626,11 +624,11 @@ static inline void ocfs2_dec_holders(struct ocfs2_lock_res *lockres,
BUG_ON(!lockres);

switch(level) {
- case LKM_EXMODE:
+ case DLM_LOCK_EX:
BUG_ON(!lockres->l_ex_holders);
lockres->l_ex_holders--;
break;
- case LKM_PRMODE:
+ case DLM_LOCK_PR:
BUG_ON(!lockres->l_ro_holders);
lockres->l_ro_holders--;
break;
@@ -645,12 +643,12 @@ static inline void ocfs2_dec_holders(struct ocfs2_lock_res *lockres,
* lock types are added. */
static inline int ocfs2_highest_compat_lock_level(int level)
{
- int new_level = LKM_EXMODE;
+ int new_level = DLM_LOCK_EX;

- if (level == LKM_EXMODE)
- new_level = LKM_NLMODE;
- else if (level == LKM_PRMODE)
- new_level = LKM_PRMODE;
+ if (level == DLM_LOCK_EX)
+ new_level = DLM_LOCK_NL;
+ else if (level == DLM_LOCK_PR)
+ new_level = DLM_LOCK_PR;
return new_level;
}

@@ -689,12 +687,12 @@ static inline void ocfs2_generic_handle_downconvert_action(struct ocfs2_lock_res
BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BUSY));
BUG_ON(!(lockres->l_flags & OCFS2_LOCK_ATTACHED));
BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED));
- BUG_ON(lockres->l_blocking <= LKM_NLMODE);
+ BUG_ON(lockres->l_blocking <= DLM_LOCK_NL);

lockres->l_level = lockres->l_requested;
if (lockres->l_level <=
ocfs2_highest_compat_lock_level(lockres->l_blocking)) {
- lockres->l_blocking = LKM_NLMODE;
+ lockres->l_blocking = DLM_LOCK_NL;
lockres_clear_flags(lockres, OCFS2_LOCK_BLOCKED);
}
lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
@@ -713,7 +711,7 @@ static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lo
* information is already up to data. Convert from NL to
* *anything* however should mark ourselves as needing an
* update */
- if (lockres->l_level == LKM_NLMODE &&
+ if (lockres->l_level == DLM_LOCK_NL &&
lockres->l_ops->flags & LOCK_TYPE_REQUIRES_REFRESH)
lockres_or_flags(lockres, OCFS2_LOCK_NEEDS_REFRESH);

@@ -730,7 +728,7 @@ static inline void ocfs2_generic_handle_attach_action(struct ocfs2_lock_res *loc
BUG_ON((!(lockres->l_flags & OCFS2_LOCK_BUSY)));
BUG_ON(lockres->l_flags & OCFS2_LOCK_ATTACHED);

- if (lockres->l_requested > LKM_NLMODE &&
+ if (lockres->l_requested > DLM_LOCK_NL &&
!(lockres->l_flags & OCFS2_LOCK_LOCAL) &&
lockres->l_ops->flags & LOCK_TYPE_REQUIRES_REFRESH)
lockres_or_flags(lockres, OCFS2_LOCK_NEEDS_REFRESH);
@@ -775,7 +773,7 @@ static void ocfs2_blocking_ast(void *opaque, int level)
int needs_downconvert;
unsigned long flags;

- BUG_ON(level <= LKM_NLMODE);
+ BUG_ON(level <= DLM_LOCK_NL);

mlog(0, "BAST fired for lockres %s, blocking %d, level %d type %s\n",
lockres->l_name, level, lockres->l_level,
@@ -866,7 +864,7 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
static int ocfs2_lock_create(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
- int dlm_flags)
+ u32 dlm_flags)
{
int ret = 0;
enum dlm_status status = DLM_NORMAL;
@@ -874,7 +872,7 @@ static int ocfs2_lock_create(struct ocfs2_super *osb,

mlog_entry_void();

- mlog(0, "lock %s, level = %d, flags = %d\n", lockres->l_name, level,
+ mlog(0, "lock %s, level = %d, flags = %u\n", lockres->l_name, level,
dlm_flags);

spin_lock_irqsave(&lockres->l_lock, flags);
@@ -1016,7 +1014,7 @@ static int ocfs2_wait_for_mask_interruptible(struct ocfs2_mask_waiter *mw,
static int ocfs2_cluster_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
- int lkm_flags,
+ u32 lkm_flags,
int arg_flags)
{
struct ocfs2_mask_waiter mw;
@@ -1030,7 +1028,7 @@ static int ocfs2_cluster_lock(struct ocfs2_super *osb,
ocfs2_init_mask_waiter(&mw);

if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
- lkm_flags |= LKM_VALBLK;
+ lkm_flags |= DLM_LKF_VALBLK;

again:
wait = 0;
@@ -1074,18 +1072,18 @@ again:

if (!(lockres->l_flags & OCFS2_LOCK_ATTACHED)) {
lockres->l_action = OCFS2_AST_ATTACH;
- lkm_flags &= ~LKM_CONVERT;
+ lkm_flags &= ~DLM_LKF_CONVERT;
} else {
lockres->l_action = OCFS2_AST_CONVERT;
- lkm_flags |= LKM_CONVERT;
+ lkm_flags |= DLM_LKF_CONVERT;
}

lockres->l_requested = level;
lockres_or_flags(lockres, OCFS2_LOCK_BUSY);
spin_unlock_irqrestore(&lockres->l_lock, flags);

- BUG_ON(level == LKM_IVMODE);
- BUG_ON(level == LKM_NLMODE);
+ BUG_ON(level == DLM_LOCK_IV);
+ BUG_ON(level == DLM_LOCK_NL);

mlog(0, "lock %s, convert from %d to level = %d\n",
lockres->l_name, lockres->l_level, level);
@@ -1099,7 +1097,7 @@ again:
OCFS2_LOCK_ID_MAX_LEN - 1,
lockres);
if (status != DLM_NORMAL) {
- if ((lkm_flags & LKM_NOQUEUE) &&
+ if ((lkm_flags & DLM_LKF_NOQUEUE) &&
(status == DLM_NOTQUEUED))
ret = -EAGAIN;
else {
@@ -1175,9 +1173,9 @@ static int ocfs2_create_new_lock(struct ocfs2_super *osb,
int ex,
int local)
{
- int level = ex ? LKM_EXMODE : LKM_PRMODE;
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
unsigned long flags;
- int lkm_flags = local ? LKM_LOCAL : 0;
+ u32 lkm_flags = local ? DLM_LKF_LOCAL : 0;

spin_lock_irqsave(&lockres->l_lock, flags);
BUG_ON(lockres->l_flags & OCFS2_LOCK_ATTACHED);
@@ -1220,7 +1218,7 @@ int ocfs2_create_new_inode_locks(struct inode *inode)
}

/*
- * We don't want to use LKM_LOCAL on a meta data lock as they
+ * We don't want to use DLM_LKF_LOCAL on a meta data lock as they
* don't use a generation in their lock names.
*/
ret = ocfs2_create_new_lock(osb, &OCFS2_I(inode)->ip_inode_lockres, 1, 0);
@@ -1259,7 +1257,7 @@ int ocfs2_rw_lock(struct inode *inode, int write)

lockres = &OCFS2_I(inode)->ip_rw_lockres;

- level = write ? LKM_EXMODE : LKM_PRMODE;
+ level = write ? DLM_LOCK_EX : DLM_LOCK_PR;

status = ocfs2_cluster_lock(OCFS2_SB(inode->i_sb), lockres, level, 0,
0);
@@ -1272,7 +1270,7 @@ int ocfs2_rw_lock(struct inode *inode, int write)

void ocfs2_rw_unlock(struct inode *inode, int write)
{
- int level = write ? LKM_EXMODE : LKM_PRMODE;
+ int level = write ? DLM_LOCK_EX : DLM_LOCK_PR;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_rw_lockres;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);

@@ -1310,7 +1308,7 @@ int ocfs2_open_lock(struct inode *inode)
lockres = &OCFS2_I(inode)->ip_open_lockres;

status = ocfs2_cluster_lock(OCFS2_SB(inode->i_sb), lockres,
- LKM_PRMODE, 0, 0);
+ DLM_LOCK_PR, 0, 0);
if (status < 0)
mlog_errno(status);

@@ -1338,16 +1336,16 @@ int ocfs2_try_open_lock(struct inode *inode, int write)

lockres = &OCFS2_I(inode)->ip_open_lockres;

- level = write ? LKM_EXMODE : LKM_PRMODE;
+ level = write ? DLM_LOCK_EX : DLM_LOCK_PR;

/*
* The file system may already holding a PRMODE/EXMODE open lock.
- * Since we pass LKM_NOQUEUE, the request won't block waiting on
+ * Since we pass DLM_LKF_NOQUEUE, the request won't block waiting on
* other nodes and the -EAGAIN will indicate to the caller that
* this inode is still in use.
*/
status = ocfs2_cluster_lock(OCFS2_SB(inode->i_sb), lockres,
- level, LKM_NOQUEUE, 0);
+ level, DLM_LKF_NOQUEUE, 0);

out:
mlog_exit(status);
@@ -1372,10 +1370,10 @@ void ocfs2_open_unlock(struct inode *inode)

if(lockres->l_ro_holders)
ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres,
- LKM_PRMODE);
+ DLM_LOCK_PR);
if(lockres->l_ex_holders)
ocfs2_cluster_unlock(OCFS2_SB(inode->i_sb), lockres,
- LKM_EXMODE);
+ DLM_LOCK_EX);

out:
mlog_exit_void();
@@ -1462,7 +1460,7 @@ int ocfs2_file_lock(struct file *file, int ex, int trylock)
ocfs2_init_mask_waiter(&mw);

if ((lockres->l_flags & OCFS2_LOCK_BUSY) ||
- (lockres->l_level > LKM_NLMODE)) {
+ (lockres->l_level > DLM_LOCK_NL)) {
mlog(ML_ERROR,
"File lock \"%s\" has busy or locked state: flags: 0x%lx, "
"level: %u\n", lockres->l_name, lockres->l_flags,
@@ -1570,7 +1568,7 @@ void ocfs2_file_unlock(struct file *file)
* Fake a blocking ast for the downconvert code.
*/
lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
- lockres->l_blocking = LKM_EXMODE;
+ lockres->l_blocking = DLM_LOCK_EX;

ocfs2_prepare_downconvert(lockres, LKM_NLMODE);
lockres_add_mask_waiter(lockres, &mw, OCFS2_LOCK_BUSY, 0);
@@ -1599,11 +1597,11 @@ static void ocfs2_downconvert_on_unlock(struct ocfs2_super *osb,
* condition. */
if (lockres->l_flags & OCFS2_LOCK_BLOCKED) {
switch(lockres->l_blocking) {
- case LKM_EXMODE:
+ case DLM_LOCK_EX:
if (!lockres->l_ex_holders && !lockres->l_ro_holders)
kick = 1;
break;
- case LKM_PRMODE:
+ case DLM_LOCK_PR:
if (!lockres->l_ex_holders)
kick = 1;
break;
@@ -1921,7 +1919,8 @@ int ocfs2_inode_lock_full(struct inode *inode,
int ex,
int arg_flags)
{
- int status, level, dlm_flags, acquired;
+ int status, level, acquired;
+ u32 dlm_flags;
struct ocfs2_lock_res *lockres = NULL;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct buffer_head *local_bh = NULL;
@@ -1951,10 +1950,10 @@ int ocfs2_inode_lock_full(struct inode *inode,
ocfs2_wait_for_recovery(osb);

lockres = &OCFS2_I(inode)->ip_inode_lockres;
- level = ex ? LKM_EXMODE : LKM_PRMODE;
+ level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
dlm_flags = 0;
if (arg_flags & OCFS2_META_LOCK_NOQUEUE)
- dlm_flags |= LKM_NOQUEUE;
+ dlm_flags |= DLM_LKF_NOQUEUE;

status = ocfs2_cluster_lock(osb, lockres, level, dlm_flags, arg_flags);
if (status < 0) {
@@ -2105,7 +2104,7 @@ int ocfs2_inode_lock_atime(struct inode *inode,
void ocfs2_inode_unlock(struct inode *inode,
int ex)
{
- int level = ex ? LKM_EXMODE : LKM_PRMODE;
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
struct ocfs2_lock_res *lockres = &OCFS2_I(inode)->ip_inode_lockres;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);

@@ -2126,7 +2125,7 @@ int ocfs2_super_lock(struct ocfs2_super *osb,
int ex)
{
int status = 0;
- int level = ex ? LKM_EXMODE : LKM_PRMODE;
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;

mlog_entry_void();
@@ -2168,7 +2167,7 @@ bail:
void ocfs2_super_unlock(struct ocfs2_super *osb,
int ex)
{
- int level = ex ? LKM_EXMODE : LKM_PRMODE;
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
struct ocfs2_lock_res *lockres = &osb->osb_super_lockres;

if (!ocfs2_mount_local(osb))
@@ -2186,7 +2185,7 @@ int ocfs2_rename_lock(struct ocfs2_super *osb)
if (ocfs2_mount_local(osb))
return 0;

- status = ocfs2_cluster_lock(osb, lockres, LKM_EXMODE, 0, 0);
+ status = ocfs2_cluster_lock(osb, lockres, DLM_LOCK_EX, 0, 0);
if (status < 0)
mlog_errno(status);

@@ -2198,13 +2197,13 @@ void ocfs2_rename_unlock(struct ocfs2_super *osb)
struct ocfs2_lock_res *lockres = &osb->osb_rename_lockres;

if (!ocfs2_mount_local(osb))
- ocfs2_cluster_unlock(osb, lockres, LKM_EXMODE);
+ ocfs2_cluster_unlock(osb, lockres, DLM_LOCK_EX);
}

int ocfs2_dentry_lock(struct dentry *dentry, int ex)
{
int ret;
- int level = ex ? LKM_EXMODE : LKM_PRMODE;
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);

@@ -2225,7 +2224,7 @@ int ocfs2_dentry_lock(struct dentry *dentry, int ex)

void ocfs2_dentry_unlock(struct dentry *dentry, int ex)
{
- int level = ex ? LKM_EXMODE : LKM_PRMODE;
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
struct ocfs2_dentry_lock *dl = dentry->d_fsdata;
struct ocfs2_super *osb = OCFS2_SB(dentry->d_sb);

@@ -2614,7 +2613,7 @@ static void ocfs2_unlock_ast(void *opaque, enum dlm_status status)
lockres->l_action = OCFS2_AST_INVALID;
break;
case OCFS2_UNLOCK_DROP_LOCK:
- lockres->l_level = LKM_IVMODE;
+ lockres->l_level = DLM_LOCK_IV;
break;
default:
BUG();
@@ -2635,14 +2634,14 @@ static int ocfs2_drop_lock(struct ocfs2_super *osb,
{
enum dlm_status status;
unsigned long flags;
- int lkm_flags = 0;
+ u32 lkm_flags = 0;

/* We didn't get anywhere near actually using this lockres. */
if (!(lockres->l_flags & OCFS2_LOCK_INITIALIZED))
goto out;

if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB)
- lkm_flags |= LKM_VALBLK;
+ lkm_flags |= DLM_LKF_VALBLK;

spin_lock_irqsave(&lockres->l_lock, flags);

@@ -2668,7 +2667,7 @@ static int ocfs2_drop_lock(struct ocfs2_super *osb,

if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB) {
if (lockres->l_flags & OCFS2_LOCK_ATTACHED &&
- lockres->l_level == LKM_EXMODE &&
+ lockres->l_level == DLM_LOCK_EX &&
!(lockres->l_flags & OCFS2_LOCK_NEEDS_REFRESH))
lockres->l_ops->set_lvb(lockres);
}
@@ -2801,10 +2800,10 @@ static void ocfs2_prepare_downconvert(struct ocfs2_lock_res *lockres,
{
assert_spin_locked(&lockres->l_lock);

- BUG_ON(lockres->l_blocking <= LKM_NLMODE);
+ BUG_ON(lockres->l_blocking <= DLM_LOCK_NL);

if (lockres->l_level <= new_level) {
- mlog(ML_ERROR, "lockres->l_level (%u) <= new_level (%u)\n",
+ mlog(ML_ERROR, "lockres->l_level (%d) <= new_level (%d)\n",
lockres->l_level, new_level);
BUG();
}
@@ -2822,13 +2821,14 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
int new_level,
int lvb)
{
- int ret, dlm_flags = LKM_CONVERT;
+ int ret;
+ u32 dlm_flags = DLM_LKF_CONVERT;
enum dlm_status status;

mlog_entry_void();

if (lvb)
- dlm_flags |= LKM_VALBLK;
+ dlm_flags |= DLM_LKF_VALBLK;

status = ocfs2_dlm_lock(osb->dlm,
new_level,
@@ -2894,7 +2894,7 @@ static int ocfs2_cancel_convert(struct ocfs2_super *osb,
ret = 0;
status = ocfs2_dlm_unlock(osb->dlm,
&lockres->l_lksb,
- LKM_CANCEL,
+ DLM_LKF_CANCEL,
lockres);
if (status != DLM_NORMAL) {
ocfs2_log_dlm_error("ocfs2_dlm_unlock", status, lockres);
@@ -2939,13 +2939,13 @@ recheck:

/* if we're blocking an exclusive and we have *any* holders,
* then requeue. */
- if ((lockres->l_blocking == LKM_EXMODE)
+ if ((lockres->l_blocking == DLM_LOCK_EX)
&& (lockres->l_ex_holders || lockres->l_ro_holders))
goto leave_requeue;

/* If it's a PR we're blocking, then only
* requeue if we've got any EX holders */
- if (lockres->l_blocking == LKM_PRMODE &&
+ if (lockres->l_blocking == DLM_LOCK_PR &&
lockres->l_ex_holders)
goto leave_requeue;

@@ -2992,7 +2992,7 @@ downconvert:
ctl->requeue = 0;

if (lockres->l_ops->flags & LOCK_TYPE_USES_LVB) {
- if (lockres->l_level == LKM_EXMODE)
+ if (lockres->l_level == DLM_LOCK_EX)
set_lvb = 1;

/*
@@ -3046,7 +3046,7 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
(unsigned long long)OCFS2_I(inode)->ip_blkno);
}
sync_mapping_buffers(mapping);
- if (blocking == LKM_EXMODE) {
+ if (blocking == DLM_LOCK_EX) {
truncate_inode_pages(mapping, 0);
} else {
/* We only need to wait on the I/O if we're not also
@@ -3067,8 +3067,8 @@ static int ocfs2_check_meta_downconvert(struct ocfs2_lock_res *lockres,
struct inode *inode = ocfs2_lock_res_inode(lockres);
int checkpointed = ocfs2_inode_fully_checkpointed(inode);

- BUG_ON(new_level != LKM_NLMODE && new_level != LKM_PRMODE);
- BUG_ON(lockres->l_level != LKM_EXMODE && !checkpointed);
+ BUG_ON(new_level != DLM_LOCK_NL && new_level != DLM_LOCK_PR);
+ BUG_ON(lockres->l_level != DLM_LOCK_EX && !checkpointed);

if (checkpointed)
return 1;
@@ -3132,7 +3132,7 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres,
* valid. The downconvert code will retain a PR for this node,
* so there's no further work to do.
*/
- if (blocking == LKM_PRMODE)
+ if (blocking == DLM_LOCK_PR)
return UNBLOCK_CONTINUE;

/*
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 4f44f23..9953804 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -18,15 +18,65 @@
* General Public License for more details.
*/

-#include <linux/types.h>
-#include <linux/list.h>
-
-#include "dlm/dlmapi.h"
-
#include "stackglue.h"

static struct ocfs2_locking_protocol *lproto;

+/* These should be identical */
+#if (DLM_LOCK_IV != LKM_IVMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_NL != LKM_NLMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_CR != LKM_CRMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_CW != LKM_CWMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_PR != LKM_PRMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_PW != LKM_PWMODE)
+# error Lock modes do not match
+#endif
+#if (DLM_LOCK_EX != LKM_EXMODE)
+# error Lock modes do not match
+#endif
+static inline int mode_to_o2dlm(int mode)
+{
+ BUG_ON(mode > LKM_MAXMODE);
+
+ return mode;
+}
+
+#define map_flag(_generic, _o2dlm) \
+ if (flags & (_generic)) { \
+ flags &= ~(_generic); \
+ o2dlm_flags |= (_o2dlm); \
+ }
+static int flags_to_o2dlm(u32 flags)
+{
+ int o2dlm_flags = 0;
+
+ map_flag(DLM_LKF_NOQUEUE, LKM_NOQUEUE);
+ map_flag(DLM_LKF_CANCEL, LKM_CANCEL);
+ map_flag(DLM_LKF_CONVERT, LKM_CONVERT);
+ map_flag(DLM_LKF_VALBLK, LKM_VALBLK);
+ map_flag(DLM_LKF_IVVALBLK, LKM_INVVALBLK);
+ map_flag(DLM_LKF_ORPHAN, LKM_ORPHAN);
+ map_flag(DLM_LKF_FORCEUNLOCK, LKM_FORCE);
+ map_flag(DLM_LKF_TIMEOUT, LKM_TIMEOUT);
+ map_flag(DLM_LKF_LOCAL, LKM_LOCAL);
+
+ /* map_flag() should have cleared every flag passed in */
+ BUG_ON(flags != 0);
+
+ return o2dlm_flags;
+}
+#undef map_flag
+
enum dlm_status ocfs2_dlm_lock(struct dlm_ctxt *dlm,
int mode,
struct dlm_lockstatus *lksb,
@@ -35,8 +85,12 @@ enum dlm_status ocfs2_dlm_lock(struct dlm_ctxt *dlm,
unsigned int namelen,
void *astarg)
{
+ int o2dlm_mode = mode_to_o2dlm(mode);
+ int o2dlm_flags = flags_to_o2dlm(flags);
+
BUG_ON(lproto == NULL);
- return dlmlock(dlm, mode, lksb, flags, name, namelen,
+
+ return dlmlock(dlm, o2dlm_mode, lksb, o2dlm_flags, name, namelen,
lproto->lp_lock_ast, astarg,
lproto->lp_blocking_ast);
}
@@ -46,9 +100,12 @@ enum dlm_status ocfs2_dlm_unlock(struct dlm_ctxt *dlm,
u32 flags,
void *astarg)
{
+ int o2dlm_flags = flags_to_o2dlm(flags);
+
BUG_ON(lproto == NULL);

- return dlmunlock(dlm, lksb, flags, lproto->lp_unlock_ast, astarg);
+ return dlmunlock(dlm, lksb, o2dlm_flags,
+ lproto->lp_unlock_ast, astarg);
}


diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index 40a0024..986d059 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -21,6 +21,19 @@
#ifndef STACKGLUE_H
#define STACKGLUE_H

+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/dlmconstants.h>
+
+/*
+ * dlmconstants.h does not have a LOCAL flag. We hope to remove it
+ * some day, but right now we need it. Let's fake it. This value is larger
+ * than any flag in dlmconstants.h.
+ */
+#define DLM_LKF_LOCAL 0x00100000
+
+#include "dlm/dlmapi.h"
+
struct ocfs2_locking_protocol {
void (*lp_lock_ast)(void *astarg);
void (*lp_blocking_ast)(void *astarg, int level);
--
1.5.4.1


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