diff options
Diffstat (limited to 'fs/ocfs2/journal.c')
-rw-r--r-- | fs/ocfs2/journal.c | 271 |
1 files changed, 31 insertions, 240 deletions
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index fd9734d..c0ad7cb 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -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, @@ -113,46 +110,18 @@ finally: return status; } -struct ocfs2_journal_handle *ocfs2_alloc_handle(struct ocfs2_super *osb) -{ - struct ocfs2_journal_handle *retval = NULL; - - retval = kcalloc(1, sizeof(*retval), GFP_NOFS); - if (!retval) { - mlog(ML_ERROR, "Failed to allocate memory for journal " - "handle!\n"); - return NULL; - } - - retval->max_buffs = 0; - retval->num_locks = 0; - retval->k_handle = NULL; - - INIT_LIST_HEAD(&retval->locks); - INIT_LIST_HEAD(&retval->inode_list); - retval->journal = osb->journal; - - return retval; -} - /* pass it NULL and it will allocate a new handle object for you. If * you pass it a handle however, it may still return error, in which * case it has free'd the passed handle for you. */ -struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb, - struct ocfs2_journal_handle *handle, - int max_buffs) +handle_t *ocfs2_start_trans(struct ocfs2_super *osb, int max_buffs) { - int ret; journal_t *journal = osb->journal->j_journal; - - mlog_entry("(max_buffs = %d)\n", max_buffs); + handle_t *handle; BUG_ON(!osb || !osb->journal->j_journal); - if (ocfs2_is_hard_readonly(osb)) { - ret = -EROFS; - goto done_free; - } + if (ocfs2_is_hard_readonly(osb)) + return ERR_PTR(-EROFS); BUG_ON(osb->journal->j_state == OCFS2_JOURNAL_FREE); BUG_ON(max_buffs <= 0); @@ -163,154 +132,39 @@ struct ocfs2_journal_handle *ocfs2_start_trans(struct ocfs2_super *osb, BUG(); } - if (!handle) - handle = ocfs2_alloc_handle(osb); - if (!handle) { - ret = -ENOMEM; - mlog(ML_ERROR, "Failed to allocate memory for journal " - "handle!\n"); - goto done_free; - } - - handle->max_buffs = max_buffs; - down_read(&osb->journal->j_trans_barrier); - /* actually start the transaction now */ - handle->k_handle = journal_start(journal, max_buffs); - if (IS_ERR(handle->k_handle)) { + handle = journal_start(journal, max_buffs); + if (IS_ERR(handle)) { up_read(&osb->journal->j_trans_barrier); - ret = PTR_ERR(handle->k_handle); - handle->k_handle = NULL; - mlog_errno(ret); + mlog_errno(PTR_ERR(handle)); if (is_journal_aborted(journal)) { ocfs2_abort(osb->sb, "Detected aborted journal"); - ret = -EROFS; + handle = ERR_PTR(-EROFS); } - goto done_free; - } - - atomic_inc(&(osb->journal->j_num_trans)); - handle->flags |= OCFS2_HANDLE_STARTED; + } else + atomic_inc(&(osb->journal->j_num_trans)); - mlog_exit_ptr(handle); return handle; - -done_free: - if (handle) - ocfs2_commit_unstarted_handle(handle); /* will kfree handle */ - - mlog_exit(ret); - return ERR_PTR(ret); -} - -void ocfs2_handle_add_inode(struct ocfs2_journal_handle *handle, - struct inode *inode) -{ - BUG_ON(!handle); - BUG_ON(!inode); - - atomic_inc(&inode->i_count); - - /* we're obviously changing it... */ - mutex_lock(&inode->i_mutex); - - /* sanity check */ - BUG_ON(OCFS2_I(inode)->ip_handle); - BUG_ON(!list_empty(&OCFS2_I(inode)->ip_handle_list)); - - OCFS2_I(inode)->ip_handle = handle; - list_move_tail(&(OCFS2_I(inode)->ip_handle_list), &(handle->inode_list)); -} - -static void ocfs2_handle_unlock_inodes(struct ocfs2_journal_handle *handle) -{ - struct list_head *p, *n; - struct inode *inode; - struct ocfs2_inode_info *oi; - - list_for_each_safe(p, n, &handle->inode_list) { - oi = list_entry(p, struct ocfs2_inode_info, - ip_handle_list); - inode = &oi->vfs_inode; - - OCFS2_I(inode)->ip_handle = NULL; - list_del_init(&OCFS2_I(inode)->ip_handle_list); - - mutex_unlock(&inode->i_mutex); - iput(inode); - } -} - -/* 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(); - - BUG_ON(handle->flags & OCFS2_HANDLE_STARTED); - - ocfs2_handle_unlock_inodes(handle); - /* 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) +int ocfs2_commit_trans(struct ocfs2_super *osb, + handle_t *handle) { - handle_t *jbd_handle; - int retval; - struct ocfs2_journal *journal = handle->journal; - - mlog_entry_void(); + int ret; + struct ocfs2_journal *journal = osb->journal; BUG_ON(!handle); - if (!(handle->flags & OCFS2_HANDLE_STARTED)) { - ocfs2_commit_unstarted_handle(handle); - mlog_exit_void(); - return; - } - - /* release inode semaphores we took during this transaction */ - ocfs2_handle_unlock_inodes(handle); - - /* ocfs2_extend_trans may have had to call journal_restart - * which will always commit the transaction, but may return - * error for any number of reasons. If this is the case, we - * clear k_handle as it's not valid any more. */ - if (handle->k_handle) { - jbd_handle = handle->k_handle; - - if (handle->flags & OCFS2_HANDLE_SYNC) - jbd_handle->h_sync = 1; - else - jbd_handle->h_sync = 0; - - /* actually stop the transaction. if we've set h_sync, - * it'll have been committed when we return */ - retval = journal_stop(jbd_handle); - if (retval < 0) { - mlog_errno(retval); - mlog(ML_ERROR, "Could not commit transaction\n"); - BUG(); - } - - handle->k_handle = NULL; /* it's been free'd in journal_stop */ - } - - ocfs2_handle_cleanup_locks(journal, handle); + ret = journal_stop(handle); + if (ret < 0) + mlog_errno(ret); up_read(&journal->j_trans_barrier); - kfree(handle); - mlog_exit_void(); + return ret; } /* @@ -326,20 +180,18 @@ void ocfs2_commit_trans(struct ocfs2_journal_handle *handle) * good because transaction ids haven't yet been recorded on the * cluster locks associated with this handle. */ -int ocfs2_extend_trans(struct ocfs2_journal_handle *handle, - int nblocks) +int ocfs2_extend_trans(handle_t *handle, int nblocks) { int status; BUG_ON(!handle); - BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED)); BUG_ON(!nblocks); mlog_entry_void(); mlog(0, "Trying to extend transaction by %d blocks\n", nblocks); - status = journal_extend(handle->k_handle, nblocks); + status = journal_extend(handle, nblocks); if (status < 0) { mlog_errno(status); goto bail; @@ -347,15 +199,12 @@ int ocfs2_extend_trans(struct ocfs2_journal_handle *handle, if (status > 0) { mlog(0, "journal_extend failed, trying journal_restart\n"); - status = journal_restart(handle->k_handle, nblocks); + status = journal_restart(handle, nblocks); if (status < 0) { - handle->k_handle = NULL; mlog_errno(status); goto bail; } - handle->max_buffs = nblocks; - } else - handle->max_buffs += nblocks; + } status = 0; bail: @@ -364,7 +213,7 @@ bail: return status; } -int ocfs2_journal_access(struct ocfs2_journal_handle *handle, +int ocfs2_journal_access(handle_t *handle, struct inode *inode, struct buffer_head *bh, int type) @@ -374,7 +223,6 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle, BUG_ON(!inode); BUG_ON(!handle); BUG_ON(!bh); - BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED)); mlog_entry("bh->b_blocknr=%llu, type=%d (\"%s\"), bh->b_size = %zu\n", (unsigned long long)bh->b_blocknr, type, @@ -403,11 +251,11 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle, switch (type) { case OCFS2_JOURNAL_ACCESS_CREATE: case OCFS2_JOURNAL_ACCESS_WRITE: - status = journal_get_write_access(handle->k_handle, bh); + status = journal_get_write_access(handle, bh); break; case OCFS2_JOURNAL_ACCESS_UNDO: - status = journal_get_undo_access(handle->k_handle, bh); + status = journal_get_undo_access(handle, bh); break; default: @@ -424,17 +272,15 @@ int ocfs2_journal_access(struct ocfs2_journal_handle *handle, return status; } -int ocfs2_journal_dirty(struct ocfs2_journal_handle *handle, +int ocfs2_journal_dirty(handle_t *handle, struct buffer_head *bh) { int status; - BUG_ON(!(handle->flags & OCFS2_HANDLE_STARTED)); - mlog_entry("(bh->b_blocknr=%llu)\n", (unsigned long long)bh->b_blocknr); - status = journal_dirty_metadata(handle->k_handle, bh); + status = journal_dirty_metadata(handle, bh); if (status < 0) mlog(ML_ERROR, "Could not dirty metadata buffer. " "(bh->b_blocknr=%llu)\n", @@ -456,59 +302,6 @@ 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) @@ -562,8 +355,7 @@ int ocfs2_journal_init(struct ocfs2_journal *journal, int *dirty) /* Skip recovery waits here - journal inode metadata never * changes in a live cluster so it can be considered an * exception to the rule. */ - status = ocfs2_meta_lock_full(inode, NULL, &bh, 1, - OCFS2_META_LOCK_RECOVERY); + status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); if (status < 0) { if (status != -ERESTARTSYS) mlog(ML_ERROR, "Could not get lock on journal!\n"); @@ -1160,8 +952,7 @@ static int ocfs2_replay_journal(struct ocfs2_super *osb, } SET_INODE_JOURNAL(inode); - status = ocfs2_meta_lock_full(inode, NULL, &bh, 1, - OCFS2_META_LOCK_RECOVERY); + status = ocfs2_meta_lock_full(inode, &bh, 1, OCFS2_META_LOCK_RECOVERY); if (status < 0) { mlog(0, "status returned from ocfs2_meta_lock=%d\n", status); if (status != -ERESTARTSYS) @@ -1350,7 +1141,7 @@ static int ocfs2_trylock_journal(struct ocfs2_super *osb, SET_INODE_JOURNAL(inode); flags = OCFS2_META_LOCK_RECOVERY | OCFS2_META_LOCK_NOQUEUE; - status = ocfs2_meta_lock_full(inode, NULL, NULL, 1, flags); + status = ocfs2_meta_lock_full(inode, NULL, 1, flags); if (status < 0) { if (status != -EAGAIN) mlog_errno(status); @@ -1433,7 +1224,7 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb, } mutex_lock(&orphan_dir_inode->i_mutex); - status = ocfs2_meta_lock(orphan_dir_inode, NULL, NULL, 0); + status = ocfs2_meta_lock(orphan_dir_inode, NULL, 0); if (status < 0) { mlog_errno(status); goto out; |