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Commit bd3e7610 authored by Joel Becker's avatar Joel Becker Committed by Mark Fasheh
Browse files

ocfs2: Use global DLM_ constants in generic code. 



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

Signed-off-by: default avatarJoel Becker <joel.becker@oracle.com>
Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
parent 24ef1815

fs/ocfs2/dlmglue.c

+70 −70
Original line number Diff line number Diff line
@@ -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 @@ static int ocfs2_cluster_lock(struct ocfs2_super *osb, 


		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 @@ static int ocfs2_cluster_lock(struct ocfs2_super *osb, 
					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 @@ int ocfs2_super_lock(struct ocfs2_super *osb, 
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 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb, 


	/* 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 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb, 
	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;



	/*

fs/ocfs2/stackglue.c

+64 −7
Original line number Diff line number Diff line
@@ -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);

}

fs/ocfs2/stackglue.h

+13 −0
Original line number Diff line number Diff line
@@ -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);