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Commit daf29e9c authored by Mark Fasheh's avatar Mark Fasheh
Browse files

ocfs2: remove unused ocfs2_handle_add_lock() 



This gets us rid of a slab we no longer need, as well as removing the
majority of what's left on ocfs2_journal_handle.

ocfs2_commit_unstarted_handle() has no more real work to do, so remove that
function too.

Signed-off-by: default avatarMark Fasheh <mark.fasheh@oracle.com>
parent 02928a71

fs/ocfs2/dlmglue.c

+0 −6
Original line number Diff line number Diff line
@@ -1668,12 +1668,6 @@ int ocfs2_meta_lock_full(struct inode *inode, 
		}

	}



	if (handle) {

		status = ocfs2_handle_add_lock(handle, inode);

		if (status < 0)

			mlog_errno(status);

	}



bail:

	if (status < 0) {

		if (ret_bh && (*ret_bh)) {

fs/ocfs2/journal.c

+2 −78
Original line number Diff line number Diff line
@@ -57,9 +57,6 @@ static int ocfs2_recover_node(struct ocfs2_super *osb, 
static int __ocfs2_recovery_thread(void *arg);

static int ocfs2_commit_cache(struct ocfs2_super *osb);

static int ocfs2_wait_on_mount(struct ocfs2_super *osb);

static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,

				       struct ocfs2_journal_handle *handle);

static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle);

static int ocfs2_journal_toggle_dirty(struct ocfs2_super *osb,

				      int dirty);

static int ocfs2_trylock_journal(struct ocfs2_super *osb,
@@ -123,11 +120,8 @@ struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb) 
		     "handle!\n");

		return NULL;

	}



	retval->num_locks = 0;

	retval->k_handle = NULL;



	INIT_LIST_HEAD(&retval->locks);

	retval->journal = osb->journal;



	return retval;
@@ -195,27 +189,12 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb, 


done_free:

	if (handle)

		ocfs2_commit_unstarted_handle(handle); /* will kfree handle */

		kfree(handle);



	mlog_exit(ret);

	return ERR_PTR(ret);

}



/* This is trivial so we do it out of the main commit

 * paths. Beware, it can be called from start_trans too! */

static void ocfs2_commit_unstarted_handle(struct ocfs2_journal_handle *handle)

{

	mlog_entry_void();



	/* You are allowed to add journal locks before the transaction

	 * has started. */

	ocfs2_handle_cleanup_locks(handle->journal, handle);



	kfree(handle);



	mlog_exit_void();

}



void ocfs2_commit_trans(struct ocfs2_journal_handle *handle)

{

	handle_t *jbd_handle;
@@ -227,7 +206,7 @@ void ocfs2_commit_trans(struct ocfs2_journal_handle *handle) 
	BUG_ON(!handle);



	if (!handle->k_handle) {

		ocfs2_commit_unstarted_handle(handle);

		kfree(handle);

		mlog_exit_void();

		return;

	}
@@ -251,8 +230,6 @@ void ocfs2_commit_trans(struct ocfs2_journal_handle *handle) 
		handle->k_handle = NULL; /* it's been free'd in journal_stop */

	}



	ocfs2_handle_cleanup_locks(journal, handle);



	up_read(&journal->j_trans_barrier);



	kfree(handle);
@@ -394,59 +371,6 @@ int ocfs2_journal_dirty_data(handle_t *handle, 
	return err;

}



/* We always assume you're adding a metadata lock at level 'ex' */

int ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle,

			  struct inode *inode)

{

	int status;

	struct ocfs2_journal_lock *lock;



	BUG_ON(!inode);



	lock = kmem_cache_alloc(ocfs2_lock_cache, GFP_NOFS);

	if (!lock) {

		status = -ENOMEM;

		mlog_errno(-ENOMEM);

		goto bail;

	}



	if (!igrab(inode))

		BUG();

	lock->jl_inode = inode;



	list_add_tail(&(lock->jl_lock_list), &(handle->locks));

	handle->num_locks++;



	status = 0;

bail:

	mlog_exit(status);

	return status;

}



static void ocfs2_handle_cleanup_locks(struct ocfs2_journal *journal,

				       struct ocfs2_journal_handle *handle)

{

	struct list_head *p, *n;

	struct ocfs2_journal_lock *lock;

	struct inode *inode;



	list_for_each_safe(p, n, &(handle->locks)) {

		lock = list_entry(p, struct ocfs2_journal_lock,

				  jl_lock_list);

		list_del(&lock->jl_lock_list);

		handle->num_locks--;



		inode = lock->jl_inode;

		ocfs2_meta_unlock(inode, 1);

		if (atomic_read(&inode->i_count) == 1)

			mlog(ML_ERROR,

			     "Inode %llu, I'm doing a last iput for!",

			     (unsigned long long)OCFS2_I(inode)->ip_blkno);

		iput(inode);

		kmem_cache_free(ocfs2_lock_cache, lock);

	}

}



#define OCFS2_DEFAULT_COMMIT_INTERVAL 	(HZ * 5)



void ocfs2_set_journal_params(struct ocfs2_super *osb)

fs/ocfs2/journal.h

+0 −20
Original line number Diff line number Diff line
@@ -133,22 +133,9 @@ static inline void ocfs2_inode_set_new(struct ocfs2_super *osb, 
	spin_unlock(&trans_inc_lock);

}



extern kmem_cache_t *ocfs2_lock_cache;



struct ocfs2_journal_lock {

	struct inode     *jl_inode;

	struct list_head  jl_lock_list;

};



struct ocfs2_journal_handle {

	handle_t            *k_handle; /* kernel handle.                */

	struct ocfs2_journal        *journal;



	/* The following two fields are for ocfs2_handle_add_lock */

	int                 num_locks;

	struct list_head    locks;     /* A bunch of locks to

					* release on commit. This

					* should be a list_head */

};



/* Exported only for the journal struct init code in super.c. Do not call. */
@@ -229,11 +216,6 @@ static inline void ocfs2_checkpoint_inode(struct inode *inode) 
 *  ocfs2_journal_dirty    - Mark a journalled buffer as having dirty data.

 *  ocfs2_journal_dirty_data - Indicate that a data buffer should go out before

 *                             the current handle commits.

 *  ocfs2_handle_add_lock  - Sometimes we need to delay lock release

 *                          until after a transaction has been completed. Use

 *                          ocfs2_handle_add_lock to indicate that a lock needs

 *                          to be released at the end of that handle. Locks

 *                          will be released in the order that they are added.

 */



/* You must always start_trans with a number of buffs > 0, but it's
@@ -288,8 +270,6 @@ int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle, 
					 struct buffer_head *bh);

int                  ocfs2_journal_dirty_data(handle_t *handle,

					      struct buffer_head *bh);

int                  ocfs2_handle_add_lock(struct ocfs2_journal_handle *handle,

					   struct inode *inode);



/*

 *  Credit Macros:

fs/ocfs2/super.c

+0 −13
Original line number Diff line number Diff line
@@ -70,8 +70,6 @@ 


static kmem_cache_t *ocfs2_inode_cachep = NULL;



kmem_cache_t *ocfs2_lock_cache = NULL;



/* OCFS2 needs to schedule several differnt types of work which

 * require cluster locking, disk I/O, recovery waits, etc. Since these

 * types of work tend to be heavy we avoid using the kernel events
@@ -946,14 +944,6 @@ static int ocfs2_initialize_mem_caches(void) 
	if (!ocfs2_inode_cachep)

		return -ENOMEM;



	ocfs2_lock_cache = kmem_cache_create("ocfs2_lock",

					     sizeof(struct ocfs2_journal_lock),

					     0,

					     SLAB_HWCACHE_ALIGN,

					     NULL, NULL);

	if (!ocfs2_lock_cache)

		return -ENOMEM;



	return 0;

}
@@ -961,11 +951,8 @@ static void ocfs2_free_mem_caches(void) 
{

	if (ocfs2_inode_cachep)

		kmem_cache_destroy(ocfs2_inode_cachep);

	if (ocfs2_lock_cache)

		kmem_cache_destroy(ocfs2_lock_cache);



	ocfs2_inode_cachep = NULL;

	ocfs2_lock_cache = NULL;

}



static int ocfs2_get_sector(struct super_block *sb,