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From: Andiry Xu <jix024@eng.ucsd.edu>
To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-nvdimm@lists.01.org
Cc: dan.j.williams@intel.com, andy.rudoff@intel.com,
	coughlan@redhat.com, swanson@cs.ucsd.edu, david@fromorbit.com,
	jack@suse.com, swhiteho@redhat.com, miklos@szeredi.hu,
	andiry.xu@gmail.com, Andiry Xu <jix024@cs.ucsd.edu>
Subject: [RFC v2 38/83] Journal: NOVA lite journal initialization.
Date: Sat, 10 Mar 2018 10:18:19 -0800
Message-ID: <1520705944-6723-39-git-send-email-jix024@eng.ucsd.edu> (raw)
In-Reply-To: <1520705944-6723-1-git-send-email-jix024@eng.ucsd.edu>

From: Andiry Xu <jix024@cs.ucsd.edu>

NOVA uses per-CPU spinlock to protect the journals.
Lite journal initialization consists of two parts:
for a new NOVA instance, hard_init allocates the journal pages.
soft_init initializes the locks and performs journal recovery.

Signed-off-by: Andiry Xu <jix024@cs.ucsd.edu>
---
 fs/nova/journal.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 fs/nova/journal.h |  2 ++
 fs/nova/super.c   | 15 ++++++++++++
 fs/nova/super.h   |  3 +++
 4 files changed, 90 insertions(+)

diff --git a/fs/nova/journal.c b/fs/nova/journal.c
index 0e203fa..d2578e2 100644
--- a/fs/nova/journal.c
+++ b/fs/nova/journal.c
@@ -340,3 +340,73 @@ void nova_commit_lite_transaction(struct super_block *sb, u64 tail, int cpu)
 	pair->journal_head = tail;
 	nova_flush_buffer(&pair->journal_head, CACHELINE_SIZE, 1);
 }
+
+/**************************** Initialization ******************************/
+
+// Initialized DRAM journal state, validate, and recover
+int nova_lite_journal_soft_init(struct super_block *sb)
+{
+	struct nova_sb_info *sbi = NOVA_SB(sb);
+	struct journal_ptr_pair *pair;
+	int i;
+	int ret = 0;
+
+	sbi->journal_locks = kcalloc(sbi->cpus, sizeof(spinlock_t),
+				     GFP_KERNEL);
+	if (!sbi->journal_locks)
+		return -ENOMEM;
+
+	for (i = 0; i < sbi->cpus; i++)
+		spin_lock_init(&sbi->journal_locks[i]);
+
+	for (i = 0; i < sbi->cpus; i++) {
+		pair = nova_get_journal_pointers(sb, i);
+		if (pair->journal_head == pair->journal_tail)
+			continue;
+
+		/* Ensure all entries are genuine */
+		ret = nova_check_journal_entries(sb, pair);
+		if (ret) {
+			nova_err(sb, "Journal %d checksum failure\n", i);
+			ret = -EINVAL;
+			break;
+		}
+
+		ret = nova_recover_lite_journal(sb, pair);
+	}
+
+	return ret;
+}
+
+/* Initialized persistent journal state */
+int nova_lite_journal_hard_init(struct super_block *sb)
+{
+	struct nova_sb_info *sbi = NOVA_SB(sb);
+	struct nova_inode_info_header sih;
+	struct journal_ptr_pair *pair;
+	unsigned long blocknr = 0;
+	int allocated;
+	int i;
+	u64 block;
+
+	sih.ino = NOVA_LITEJOURNAL_INO;
+	sih.i_blk_type = NOVA_BLOCK_TYPE_4K;
+
+	for (i = 0; i < sbi->cpus; i++) {
+		pair = nova_get_journal_pointers(sb, i);
+
+		allocated = nova_new_log_blocks(sb, &sih, &blocknr, 1,
+			ALLOC_INIT_ZERO, ANY_CPU, ALLOC_FROM_HEAD);
+		nova_dbg_verbose("%s: allocate log @ 0x%lx\n", __func__,
+							blocknr);
+		if (allocated != 1 || blocknr == 0)
+			return -ENOSPC;
+
+		block = nova_get_block_off(sb, blocknr, NOVA_BLOCK_TYPE_4K);
+		pair->journal_head = pair->journal_tail = block;
+		nova_flush_buffer(pair, CACHELINE_SIZE, 0);
+	}
+
+	PERSISTENT_BARRIER();
+	return nova_lite_journal_soft_init(sb);
+}
diff --git a/fs/nova/journal.h b/fs/nova/journal.h
index 2259880..6e3a528 100644
--- a/fs/nova/journal.h
+++ b/fs/nova/journal.h
@@ -50,5 +50,7 @@ u64 nova_create_rename_transaction(struct super_block *sb,
 u64 nova_create_logentry_transaction(struct super_block *sb,
 	void *entry, enum nova_entry_type type, int cpu);
 void nova_commit_lite_transaction(struct super_block *sb, u64 tail, int cpu);
+int nova_lite_journal_soft_init(struct super_block *sb);
+int nova_lite_journal_hard_init(struct super_block *sb);
 
 #endif
diff --git a/fs/nova/super.c b/fs/nova/super.c
index d73c202..216d396 100644
--- a/fs/nova/super.c
+++ b/fs/nova/super.c
@@ -379,6 +379,11 @@ static struct nova_inode *nova_init(struct super_block *sb,
 
 	nova_init_blockmap(sb, 0);
 
+	if (nova_lite_journal_hard_init(sb) < 0) {
+		nova_err(sb, "Lite journal hard initialization failed\n");
+		return ERR_PTR(-EINVAL);
+	}
+
 	if (nova_init_inode_inuse_list(sb) < 0)
 		return ERR_PTR(-EINVAL);
 
@@ -598,6 +603,12 @@ static int nova_fill_super(struct super_block *sb, void *data, int silent)
 		goto out;
 	}
 
+	if (nova_lite_journal_soft_init(sb)) {
+		retval = -EINVAL;
+		nova_err(sb, "Lite journal initialization failed\n");
+		goto out;
+	}
+
 	blocksize = le32_to_cpu(sbi->nova_sb->s_blocksize);
 	nova_set_blocksize(sb, blocksize);
 
@@ -647,6 +658,9 @@ static int nova_fill_super(struct super_block *sb, void *data, int silent)
 
 	nova_delete_free_lists(sb);
 
+	kfree(sbi->journal_locks);
+	sbi->journal_locks = NULL;
+
 	kfree(sbi->inode_maps);
 	sbi->inode_maps = NULL;
 
@@ -745,6 +759,7 @@ static void nova_put_super(struct super_block *sb)
 
 	kfree(sbi->zeroed_page);
 	nova_dbgmask = 0;
+	kfree(sbi->journal_locks);
 
 	for (i = 0; i < sbi->cpus; i++) {
 		inode_map = &sbi->inode_maps[i];
diff --git a/fs/nova/super.h b/fs/nova/super.h
index 9772d2f..56a840e 100644
--- a/fs/nova/super.h
+++ b/fs/nova/super.h
@@ -119,6 +119,9 @@ struct nova_sb_info {
 	/* ZEROED page for cache page initialized */
 	void *zeroed_page;
 
+	/* Per-CPU journal lock */
+	spinlock_t *journal_locks;
+
 	/* Per-CPU inode map */
 	struct inode_map	*inode_maps;
 
-- 
2.7.4

  parent reply index

Thread overview: 119+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-10 18:17 [RFC v2 00/83] NOVA: a new file system for persistent memory Andiry Xu
2018-03-10 18:17 ` [RFC v2 01/83] Introduction and documentation of NOVA filesystem Andiry Xu
2018-03-19 20:43   ` Randy Dunlap
2018-03-19 23:00     ` Andiry Xu
2018-04-22  8:05   ` Pavel Machek
2018-03-10 18:17 ` [RFC v2 02/83] Add nova_def.h Andiry Xu
2018-03-10 18:17 ` [RFC v2 03/83] Add super.h Andiry Xu
2018-03-15  4:54   ` Darrick J. Wong
2018-03-15  6:11     ` Andiry Xu
2018-03-15  9:05       ` Arnd Bergmann
2018-03-15 17:51         ` Andiry Xu
2018-03-15 20:04           ` Andreas Dilger
2018-03-15 20:38           ` Arnd Bergmann
2018-03-16  2:59             ` Theodore Y. Ts'o
2018-03-16  6:17               ` Andiry Xu
2018-03-16  6:30                 ` Darrick J. Wong
2018-03-16  9:19               ` Arnd Bergmann
2018-03-10 18:17 ` [RFC v2 04/83] NOVA inode definition Andiry Xu
2018-03-15  5:06   ` Darrick J. Wong
2018-03-15  6:16     ` Andiry Xu
2018-03-10 18:17 ` [RFC v2 05/83] Add NOVA filesystem definitions and useful helper routines Andiry Xu
2018-03-11 12:00   ` Nikolay Borisov
2018-03-11 19:22     ` Eric Biggers
2018-03-11 21:45       ` Andiry Xu
2018-03-19 19:39       ` Andiry Xu
2018-03-19 20:30         ` Eric Biggers
2018-03-19 21:59           ` Andiry Xu
2018-03-10 18:17 ` [RFC v2 06/83] Add inode get/read methods Andiry Xu
2018-04-23  6:12   ` Darrick J. Wong
2018-04-23 15:55     ` Andiry Xu
2018-03-10 18:17 ` [RFC v2 07/83] Initialize inode_info and rebuild inode information in nova_iget() Andiry Xu
2018-03-10 18:17 ` [RFC v2 08/83] NOVA superblock operations Andiry Xu
2018-03-10 18:17 ` [RFC v2 09/83] Add Kconfig and Makefile Andiry Xu
2018-03-11 12:15   ` Nikolay Borisov
2018-03-11 21:32     ` Andiry Xu
2018-03-10 18:17 ` [RFC v2 10/83] Add superblock integrity check Andiry Xu
2018-03-10 18:17 ` [RFC v2 11/83] Add timing and I/O statistics for performance analysis and profiling Andiry Xu
2018-03-10 18:17 ` [RFC v2 12/83] Add timing for mount and init Andiry Xu
2018-03-10 18:17 ` [RFC v2 13/83] Add remount_fs and show_options methods Andiry Xu
2018-03-10 18:17 ` [RFC v2 14/83] Add range node kmem cache Andiry Xu
2018-03-11 11:55   ` Nikolay Borisov
2018-03-11 21:31     ` Andiry Xu
2018-03-10 18:17 ` [RFC v2 15/83] Add free list data structure Andiry Xu
2018-03-10 18:17 ` [RFC v2 16/83] Initialize block map and free lists in nova_init() Andiry Xu
2018-03-11 12:12   ` Nikolay Borisov
2018-03-11 21:30     ` Andiry Xu
2018-03-10 18:17 ` [RFC v2 17/83] Add statfs support Andiry Xu
2018-03-10 18:17 ` [RFC v2 18/83] Add freelist statistics printing Andiry Xu
2018-03-10 18:18 ` [RFC v2 19/83] Add pmem block free routines Andiry Xu
2018-03-10 18:18 ` [RFC v2 20/83] Pmem block allocation routines Andiry Xu
2018-03-10 18:18 ` [RFC v2 21/83] Add log structure Andiry Xu
2018-03-10 18:18 ` [RFC v2 22/83] Inode log pages allocation and reclaimation Andiry Xu
2018-03-10 18:18 ` [RFC v2 23/83] Save allocator to pmem in put_super Andiry Xu
2018-03-10 18:18 ` [RFC v2 24/83] Initialize and allocate inode table Andiry Xu
2018-03-10 18:18 ` [RFC v2 25/83] Support get normal inode address and inode table extentsion Andiry Xu
2018-03-10 18:18 ` [RFC v2 26/83] Add inode_map to track inuse inodes Andiry Xu
2018-03-10 18:18 ` [RFC v2 27/83] Save the inode inuse list to pmem upon umount Andiry Xu
2018-03-10 18:18 ` [RFC v2 28/83] Add NOVA address space operations Andiry Xu
2018-03-10 18:18 ` [RFC v2 29/83] Add write_inode and dirty_inode routines Andiry Xu
2018-03-10 18:18 ` [RFC v2 30/83] New NOVA inode allocation Andiry Xu
2018-03-10 18:18 ` [RFC v2 31/83] Add new vfs " Andiry Xu
2018-03-10 18:18 ` [RFC v2 32/83] Add log entry definitions Andiry Xu
2018-03-10 18:18 ` [RFC v2 33/83] Inode log and entry printing for debug purpose Andiry Xu
2018-03-10 18:18 ` [RFC v2 34/83] Journal: NOVA light weight journal definitions Andiry Xu
2018-03-10 18:18 ` [RFC v2 35/83] Journal: Lite journal helper routines Andiry Xu
2018-03-10 18:18 ` [RFC v2 36/83] Journal: Lite journal recovery Andiry Xu
2018-03-10 18:18 ` [RFC v2 37/83] Journal: Lite journal create and commit Andiry Xu
2018-03-10 18:18 ` Andiry Xu [this message]
2018-03-10 18:18 ` [RFC v2 39/83] Log operation: dentry append Andiry Xu
2018-03-10 18:18 ` [RFC v2 40/83] Log operation: file write entry append Andiry Xu
2018-03-10 18:18 ` [RFC v2 41/83] Log operation: setattr " Andiry Xu
2018-03-10 18:18 ` [RFC v2 42/83] Log operation: link change append Andiry Xu
2018-03-10 18:18 ` [RFC v2 43/83] Log operation: in-place update log entry Andiry Xu
2018-03-10 18:18 ` [RFC v2 44/83] Log operation: invalidate log entries Andiry Xu
2018-03-10 18:18 ` [RFC v2 45/83] Log operation: file inode log lookup and assign Andiry Xu
2018-03-10 18:18 ` [RFC v2 46/83] Dir: Add Directory radix tree insert/remove methods Andiry Xu
2018-03-10 18:18 ` [RFC v2 47/83] Dir: Add initial dentries when initializing a directory inode log Andiry Xu
2018-03-10 18:18 ` [RFC v2 48/83] Dir: Readdir operation Andiry Xu
2018-03-10 18:18 ` [RFC v2 49/83] Dir: Append create/remove dentry Andiry Xu
2018-03-10 18:18 ` [RFC v2 50/83] Inode: Add nova_evict_inode Andiry Xu
2018-03-10 18:18 ` [RFC v2 51/83] Rebuild: directory inode Andiry Xu
2018-03-10 18:18 ` [RFC v2 52/83] Rebuild: file inode Andiry Xu
2018-03-10 18:18 ` [RFC v2 53/83] Namei: lookup Andiry Xu
2018-03-10 18:18 ` [RFC v2 54/83] Namei: create and mknod Andiry Xu
2018-03-10 18:18 ` [RFC v2 55/83] Namei: mkdir Andiry Xu
2018-03-10 18:18 ` [RFC v2 56/83] Namei: link and unlink Andiry Xu
2018-03-10 18:18 ` [RFC v2 57/83] Namei: rmdir Andiry Xu
2018-03-10 18:18 ` [RFC v2 58/83] Namei: rename Andiry Xu
2018-03-10 18:18 ` [RFC v2 59/83] Namei: setattr Andiry Xu
2018-03-10 18:18 ` [RFC v2 60/83] Add special inode operations Andiry Xu
2018-03-10 18:18 ` [RFC v2 61/83] Super: Add nova_export_ops Andiry Xu
2018-03-10 18:18 ` [RFC v2 62/83] File: getattr and file inode operations Andiry Xu
2018-03-10 18:18 ` [RFC v2 63/83] File operation: llseek Andiry Xu
2018-03-10 18:18 ` [RFC v2 64/83] File operation: open, fsync, flush Andiry Xu
2018-03-10 18:18 ` [RFC v2 65/83] File operation: read Andiry Xu
2018-03-10 18:18 ` [RFC v2 66/83] Super: Add file write item cache Andiry Xu
2018-03-10 18:18 ` [RFC v2 67/83] Dax: commit list of file write items to log Andiry Xu
2018-03-10 18:18 ` [RFC v2 68/83] File operation: copy-on-write write Andiry Xu
2018-03-10 18:18 ` [RFC v2 69/83] Super: Add module param inplace_data_updates Andiry Xu
2018-03-10 18:18 ` [RFC v2 70/83] File operation: Inplace write Andiry Xu
2018-03-10 18:18 ` [RFC v2 71/83] Symlink support Andiry Xu
2018-03-10 18:18 ` [RFC v2 72/83] File operation: fallocate Andiry Xu
2018-03-10 18:18 ` [RFC v2 73/83] Dax: Add iomap operations Andiry Xu
2018-03-10 18:18 ` [RFC v2 74/83] File operation: Mmap Andiry Xu
2018-03-10 18:18 ` [RFC v2 75/83] File operation: read/write iter Andiry Xu
2018-03-10 18:18 ` [RFC v2 76/83] Ioctl support Andiry Xu
2018-03-10 18:18 ` [RFC v2 77/83] GC: Fast garbage collection Andiry Xu
2018-03-10 18:18 ` [RFC v2 78/83] GC: Thorough " Andiry Xu
2018-03-10 18:19 ` [RFC v2 79/83] Normal recovery Andiry Xu
2018-03-10 18:19 ` [RFC v2 80/83] Failure recovery: bitmap operations Andiry Xu
2018-03-10 18:19 ` [RFC v2 81/83] Failure recovery: Inode pages recovery routines Andiry Xu
2018-03-10 18:19 ` [RFC v2 82/83] Failure recovery: Per-CPU recovery Andiry Xu
2018-03-10 18:19 ` [RFC v2 83/83] Sysfs support Andiry Xu
2018-03-15  0:33   ` Randy Dunlap
2018-03-15  6:07     ` Andiry Xu
2018-03-22 15:00   ` David Sterba
2018-03-23  0:31     ` Andiry Xu
2018-03-11  2:14 ` [RFC v2 00/83] NOVA: a new file system for persistent memory Theodore Y. Ts'o
2018-03-11  4:58   ` Andiry Xu

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