---

yaml
---
r: 118578
b: refs/heads/master
c: 55477eb
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 52c642f33b14bfa1b00ef2b68296effb34a573f3
+refs/heads/master: 55477eb49d1e56927358f90762a8a19b61c6cb53

trunk/arch/x86/xen/enlighten.c

@@ -863,15 +863,16 @@ static void xen_alloc_ptpage(struct mm_struct *mm, unsigned long pfn, unsigned l
 	if (PagePinned(virt_to_page(mm->pgd))) {
 		SetPagePinned(page);
 
+		vm_unmap_aliases();
 		if (!PageHighMem(page)) {
 			make_lowmem_page_readonly(__va(PFN_PHYS((unsigned long)pfn)));
 			if (level == PT_PTE && USE_SPLIT_PTLOCKS)
 				pin_pagetable_pfn(MMUEXT_PIN_L1_TABLE, pfn);
-		} else
+		} else {
 			/* make sure there are no stray mappings of
 			   this page */
 			kmap_flush_unused();
-			vm_unmap_aliases();
+		}
 	}
 }
 

trunk/arch/x86/xen/mmu.c

@@ -850,13 +850,16 @@ static int xen_pin_page(struct mm_struct *mm, struct page *page,
    read-only, and can be pinned. */
 static void __xen_pgd_pin(struct mm_struct *mm, pgd_t *pgd)
 {
+	vm_unmap_aliases();
+
 	xen_mc_batch();
 
-	if (xen_pgd_walk(mm, xen_pin_page, USER_LIMIT)) {
-		/* re-enable interrupts for kmap_flush_unused */
+	 if (xen_pgd_walk(mm, xen_pin_page, USER_LIMIT)) {
+		/* re-enable interrupts for flushing */
 		xen_mc_issue(0);
+
 		kmap_flush_unused();
-		vm_unmap_aliases();
+
 		xen_mc_batch();
 	}
 

trunk/drivers/firmware/dmi_scan.c

@@ -81,9 +81,9 @@ static void dmi_table(u8 *buf, int len, int num,
 		const struct dmi_header *dm = (const struct dmi_header *)data;
 
 		/*
-		 *  We want to know the total length (formated area and strings)
-		 *  before decoding to make sure we won't run off the table in
-		 *  dmi_decode or dmi_string
+		 *  We want to know the total length (formatted area and
+		 *  strings) before decoding to make sure we won't run off the
+		 *  table in dmi_decode or dmi_string
 		 */
 		data += dm->length;
 		while ((data - buf < len - 1) && (data[0] || data[1]))

trunk/drivers/message/fusion/mptlan.c

@@ -77,12 +77,6 @@ MODULE_VERSION(my_VERSION);
  *  Fusion MPT LAN private structures
  */
 
-struct NAA_Hosed {
-	u16 NAA;
-	u8 ieee[FC_ALEN];
-	struct NAA_Hosed *next;
-};
-
 struct BufferControl {
 	struct sk_buff	*skb;
 	dma_addr_t	dma;
@@ -159,11 +153,6 @@ static u8 LanCtx = MPT_MAX_PROTOCOL_DRIVERS;
 static u32 max_buckets_out = 127;
 static u32 tx_max_out_p = 127 - 16;
 
-#ifdef QLOGIC_NAA_WORKAROUND
-static struct NAA_Hosed *mpt_bad_naa = NULL;
-DEFINE_RWLOCK(bad_naa_lock);
-#endif
-
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 /**
  *	lan_reply - Handle all data sent from the hardware.
@@ -780,30 +769,6 @@ mpt_lan_sdu_send (struct sk_buff *skb, struct net_device *dev)
 //			ctx, skb, skb->data));
 
 	mac = skb_mac_header(skb);
-#ifdef QLOGIC_NAA_WORKAROUND
-{
-	struct NAA_Hosed *nh;
-
-	/* Munge the NAA for Tx packets to QLogic boards, which don't follow
-	   RFC 2625. The longer I look at this, the more my opinion of Qlogic
-	   drops. */
-	read_lock_irq(&bad_naa_lock);
-	for (nh = mpt_bad_naa; nh != NULL; nh=nh->next) {
-		if ((nh->ieee[0] == mac[0]) &&
-		    (nh->ieee[1] == mac[1]) &&
-		    (nh->ieee[2] == mac[2]) &&
-		    (nh->ieee[3] == mac[3]) &&
-		    (nh->ieee[4] == mac[4]) &&
-		    (nh->ieee[5] == mac[5])) {
-			cur_naa = nh->NAA;
-			dlprintk ((KERN_INFO "mptlan/sdu_send: using NAA value "
-				  "= %04x.\n", cur_naa));
-			break;
-		}
-	}
-	read_unlock_irq(&bad_naa_lock);
-}
-#endif
 
 	pTrans->TransactionDetails[0] = cpu_to_le32((cur_naa         << 16) |
 						    (mac[0] <<  8) |
@@ -1572,79 +1537,6 @@ mpt_lan_type_trans(struct sk_buff *skb, struct net_device *dev)
 
 	fcllc = (struct fcllc *)skb->data;
 
-#ifdef QLOGIC_NAA_WORKAROUND
-{
-	u16 source_naa = fch->stype, found = 0;
-
-	/* Workaround for QLogic not following RFC 2625 in regards to the NAA
-	   value. */
-
-	if ((source_naa & 0xF000) == 0)
-		source_naa = swab16(source_naa);
-
-	if (fcllc->ethertype == htons(ETH_P_ARP))
-	    dlprintk ((KERN_INFO "mptlan/type_trans: got arp req/rep w/ naa of "
-		      "%04x.\n", source_naa));
-
-	if ((fcllc->ethertype == htons(ETH_P_ARP)) &&
-	   ((source_naa >> 12) !=  MPT_LAN_NAA_RFC2625)){
-		struct NAA_Hosed *nh, *prevnh;
-		int i;
-
-		dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep from "
-			  "system with non-RFC 2625 NAA value (%04x).\n",
-			  source_naa));
-
-		write_lock_irq(&bad_naa_lock);
-		for (prevnh = nh = mpt_bad_naa; nh != NULL;
-		     prevnh=nh, nh=nh->next) {
-			if ((nh->ieee[0] == fch->saddr[0]) &&
-			    (nh->ieee[1] == fch->saddr[1]) &&
-			    (nh->ieee[2] == fch->saddr[2]) &&
-			    (nh->ieee[3] == fch->saddr[3]) &&
-			    (nh->ieee[4] == fch->saddr[4]) &&
-			    (nh->ieee[5] == fch->saddr[5])) {
-				found = 1;
-				dlprintk ((KERN_INFO "mptlan/type_trans: ARP Re"
-					 "q/Rep w/ bad NAA from system already"
-					 " in DB.\n"));
-				break;
-			}
-		}
-
-		if ((!found) && (nh == NULL)) {
-
-			nh = kmalloc(sizeof(struct NAA_Hosed), GFP_KERNEL);
-			dlprintk ((KERN_INFO "mptlan/type_trans: ARP Req/Rep w/"
-				 " bad NAA from system not yet in DB.\n"));
-
-			if (nh != NULL) {
-				nh->next = NULL;
-				if (!mpt_bad_naa)
-					mpt_bad_naa = nh;
-				if (prevnh)
-					prevnh->next = nh;
-
-				nh->NAA = source_naa; /* Set the S_NAA value. */
-				for (i = 0; i < FC_ALEN; i++)
-					nh->ieee[i] = fch->saddr[i];
-				dlprintk ((KERN_INFO "Got ARP from %02x:%02x:%02x:%02x:"
-					  "%02x:%02x with non-compliant S_NAA value.\n",
-					  fch->saddr[0], fch->saddr[1], fch->saddr[2],
-					  fch->saddr[3], fch->saddr[4],fch->saddr[5]));
-			} else {
-				printk (KERN_ERR "mptlan/type_trans: Unable to"
-					" kmalloc a NAA_Hosed struct.\n");
-			}
-		} else if (!found) {
-			printk (KERN_ERR "mptlan/type_trans: found not"
-				" set, but nh isn't null. Evil "
-				"funkiness abounds.\n");
-		}
-		write_unlock_irq(&bad_naa_lock);
-	}
-}
-#endif
 
 	/* Strip the SNAP header from ARP packets since we don't
 	 * pass them through to the 802.2/SNAP layers.

trunk/fs/ext4/ialloc.c

@@ -718,6 +718,8 @@ struct inode *ext4_new_inode(handle_t *handle, struct inode *dir, int mode)
 			gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
 			free = ext4_free_blocks_after_init(sb, group, gdp);
 			gdp->bg_free_blocks_count = cpu_to_le16(free);
+			gdp->bg_checksum = ext4_group_desc_csum(sbi, group,
+								gdp);
 		}
 		spin_unlock(sb_bgl_lock(sbi, group));
 

trunk/fs/ext4/inode.c

@@ -2329,6 +2329,8 @@ static int ext4_da_writepage(struct page *page,
 			unlock_page(page);
 			return 0;
 		}
+		/* now mark the buffer_heads as dirty and uptodate */
+		block_commit_write(page, 0, PAGE_CACHE_SIZE);
 	}
 
 	if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
@@ -4580,9 +4582,10 @@ static int ext4_indirect_trans_blocks(struct inode *inode, int nrblocks,
 static int ext4_index_trans_blocks(struct inode *inode, int nrblocks, int chunk)
 {
 	if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
-		return ext4_indirect_trans_blocks(inode, nrblocks, 0);
-	return ext4_ext_index_trans_blocks(inode, nrblocks, 0);
+		return ext4_indirect_trans_blocks(inode, nrblocks, chunk);
+	return ext4_ext_index_trans_blocks(inode, nrblocks, chunk);
 }
+
 /*
  * Account for index blocks, block groups bitmaps and block group
  * descriptor blocks if modify datablocks and index blocks

trunk/fs/ext4/mballoc.c

@@ -4441,6 +4441,7 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
 		else if (block >= (entry->start_blk + entry->count))
 			n = &(*n)->rb_right;
 		else {
+			ext4_unlock_group(sb, group);
 			ext4_error(sb, __func__,
 			    "Double free of blocks %d (%d %d)\n",
 			    block, entry->start_blk, entry->count);

trunk/fs/ext4/super.c

@@ -1458,9 +1458,8 @@ static int ext4_fill_flex_info(struct super_block *sb)
 
 	/* We allocate both existing and potentially added groups */
 	flex_group_count = ((sbi->s_groups_count + groups_per_flex - 1) +
-			    ((sbi->s_es->s_reserved_gdt_blocks +1 ) <<
-			      EXT4_DESC_PER_BLOCK_BITS(sb))) /
-			   groups_per_flex;
+			((le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) + 1) <<
+			      EXT4_DESC_PER_BLOCK_BITS(sb))) / groups_per_flex;
 	sbi->s_flex_groups = kzalloc(flex_group_count *
 				     sizeof(struct flex_groups), GFP_KERNEL);
 	if (sbi->s_flex_groups == NULL) {
@@ -2885,12 +2884,9 @@ int ext4_force_commit(struct super_block *sb)
 /*
  * Ext4 always journals updates to the superblock itself, so we don't
  * have to propagate any other updates to the superblock on disk at this
- * point.  Just start an async writeback to get the buffers on their way
- * to the disk.
- *
- * This implicitly triggers the writebehind on sync().
+ * point.  (We can probably nuke this function altogether, and remove
+ * any mention to sb->s_dirt in all of fs/ext4; eventual cleanup...)
  */
-
 static void ext4_write_super(struct super_block *sb)
 {
 	if (mutex_trylock(&sb->s_lock) != 0)
@@ -2900,15 +2896,15 @@ static void ext4_write_super(struct super_block *sb)
 
 static int ext4_sync_fs(struct super_block *sb, int wait)
 {
-	tid_t target;
+	int ret = 0;
 
 	trace_mark(ext4_sync_fs, "dev %s wait %d", sb->s_id, wait);
 	sb->s_dirt = 0;
-	if (jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, &target)) {
-		if (wait)
-			jbd2_log_wait_commit(EXT4_SB(sb)->s_journal, target);
-	}
-	return 0;
+	if (wait)
+		ret = ext4_force_commit(sb);
+	else
+		jbd2_journal_start_commit(EXT4_SB(sb)->s_journal, NULL);
+	return ret;
 }
 
 /*

trunk/fs/jbd/checkpoint.c

@@ -115,7 +115,7 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
  */
 void __log_wait_for_space(journal_t *journal)
 {
-	int nblocks;
+	int nblocks, space_left;
 	assert_spin_locked(&journal->j_state_lock);
 
 	nblocks = jbd_space_needed(journal);
@@ -128,25 +128,42 @@ void __log_wait_for_space(journal_t *journal)
 		/*
 		 * Test again, another process may have checkpointed while we
 		 * were waiting for the checkpoint lock. If there are no
-		 * outstanding transactions there is nothing to checkpoint and
-		 * we can't make progress. Abort the journal in this case.
+		 * transactions ready to be checkpointed, try to recover
+		 * journal space by calling cleanup_journal_tail(), and if
+		 * that doesn't work, by waiting for the currently committing
+		 * transaction to complete.  If there is absolutely no way
+		 * to make progress, this is either a BUG or corrupted
+		 * filesystem, so abort the journal and leave a stack
+		 * trace for forensic evidence.
 		 */
 		spin_lock(&journal->j_state_lock);
 		spin_lock(&journal->j_list_lock);
 		nblocks = jbd_space_needed(journal);
-		if (__log_space_left(journal) < nblocks) {
+		space_left = __log_space_left(journal);
+		if (space_left < nblocks) {
 			int chkpt = journal->j_checkpoint_transactions != NULL;
+			tid_t tid = 0;
 
+			if (journal->j_committing_transaction)
+				tid = journal->j_committing_transaction->t_tid;
 			spin_unlock(&journal->j_list_lock);
 			spin_unlock(&journal->j_state_lock);
 			if (chkpt) {
 				log_do_checkpoint(journal);
+			} else if (cleanup_journal_tail(journal) == 0) {
+				/* We were able to recover space; yay! */
+				;
+			} else if (tid) {
+				log_wait_commit(journal, tid);
 			} else {
-				printk(KERN_ERR "%s: no transactions\n",
-				       __func__);
+				printk(KERN_ERR "%s: needed %d blocks and "
+				       "only had %d space available\n",
+				       __func__, nblocks, space_left);
+				printk(KERN_ERR "%s: no way to get more "
+				       "journal space\n", __func__);
+				WARN_ON(1);
 				journal_abort(journal, 0);
 			}
-
 			spin_lock(&journal->j_state_lock);
 		} else {
 			spin_unlock(&journal->j_list_lock);

trunk/fs/jbd2/checkpoint.c

@@ -116,7 +116,7 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
  */
 void __jbd2_log_wait_for_space(journal_t *journal)
 {
-	int nblocks;
+	int nblocks, space_left;
 	assert_spin_locked(&journal->j_state_lock);
 
 	nblocks = jbd_space_needed(journal);
@@ -129,25 +129,43 @@ void __jbd2_log_wait_for_space(journal_t *journal)
 		/*
 		 * Test again, another process may have checkpointed while we
 		 * were waiting for the checkpoint lock. If there are no
-		 * outstanding transactions there is nothing to checkpoint and
-		 * we can't make progress. Abort the journal in this case.
+		 * transactions ready to be checkpointed, try to recover
+		 * journal space by calling cleanup_journal_tail(), and if
+		 * that doesn't work, by waiting for the currently committing
+		 * transaction to complete.  If there is absolutely no way
+		 * to make progress, this is either a BUG or corrupted
+		 * filesystem, so abort the journal and leave a stack
+		 * trace for forensic evidence.
 		 */
 		spin_lock(&journal->j_state_lock);
 		spin_lock(&journal->j_list_lock);
 		nblocks = jbd_space_needed(journal);
-		if (__jbd2_log_space_left(journal) < nblocks) {
+		space_left = __jbd2_log_space_left(journal);
+		if (space_left < nblocks) {
 			int chkpt = journal->j_checkpoint_transactions != NULL;
+			tid_t tid = 0;
 
+			if (journal->j_committing_transaction)
+				tid = journal->j_committing_transaction->t_tid;
 			spin_unlock(&journal->j_list_lock);
 			spin_unlock(&journal->j_state_lock);
 			if (chkpt) {
 				jbd2_log_do_checkpoint(journal);
+			} else if (jbd2_cleanup_journal_tail(journal) == 0) {
+				/* We were able to recover space; yay! */
+				;
+			} else if (tid) {
+				jbd2_log_wait_commit(journal, tid);
 			} else {
-				printk(KERN_ERR "%s: no transactions\n",
-				       __func__);
+				printk(KERN_ERR "%s: needed %d blocks and "
+				       "only had %d space available\n",
+				       __func__, nblocks, space_left);
+				printk(KERN_ERR "%s: no way to get more "
+				       "journal space in %s\n", __func__,
+				       journal->j_devname);
+				WARN_ON(1);
 				jbd2_journal_abort(journal, 0);
 			}
-
 			spin_lock(&journal->j_state_lock);
 		} else {
 			spin_unlock(&journal->j_list_lock);