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Commit 67e6682f authored by Dave Kleikamp's avatar Dave Kleikamp
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JFS: Make sure special inode data is written after journal is flushed 



This patch makes sure that data that we tried to flush before the journal
was completely written actually gets pushed to disk.

To avoid duplicating code, moved common code to write_special_inodes().

Signed-off-by: default avatarDave Kleikamp <shaggy@linux.vnet.ibm.com>
parent 29a424f2

fs/jfs/jfs_logmgr.c

+15 −17
Original line number Diff line number Diff line
@@ -208,6 +208,17 @@ static struct lmStat { 
} lmStat;

#endif



static void write_special_inodes(struct jfs_log *log,

				 int (*writer)(struct address_space *))

{

	struct jfs_sb_info *sbi;



	list_for_each_entry(sbi, &log->sb_list, log_list) {

		writer(sbi->ipbmap->i_mapping);

		writer(sbi->ipimap->i_mapping);

		writer(sbi->direct_inode->i_mapping);

	}

}



/*

 * NAME:	lmLog()
@@ -935,22 +946,13 @@ static int lmLogSync(struct jfs_log * log, int hard_sync) 
	struct lrd lrd;

	int lsn;

	struct logsyncblk *lp;

	struct jfs_sb_info *sbi;

	unsigned long flags;



	/* push dirty metapages out to disk */

	if (hard_sync)

		list_for_each_entry(sbi, &log->sb_list, log_list) {

			filemap_fdatawrite(sbi->ipbmap->i_mapping);

			filemap_fdatawrite(sbi->ipimap->i_mapping);

			filemap_fdatawrite(sbi->direct_inode->i_mapping);

		}

		write_special_inodes(log, filemap_fdatawrite);

	else

		list_for_each_entry(sbi, &log->sb_list, log_list) {

			filemap_flush(sbi->ipbmap->i_mapping);

			filemap_flush(sbi->ipimap->i_mapping);

			filemap_flush(sbi->direct_inode->i_mapping);

		}

		write_special_inodes(log, filemap_flush);



	/*

	 *	forward syncpt
@@ -1536,7 +1538,6 @@ void jfs_flush_journal(struct jfs_log *log, int wait) 
{

	int i;

	struct tblock *target = NULL;

	struct jfs_sb_info *sbi;



	/* jfs_write_inode may call us during read-only mount */

	if (!log)
@@ -1598,11 +1599,7 @@ void jfs_flush_journal(struct jfs_log *log, int wait) 
	if (wait < 2)

		return;



	list_for_each_entry(sbi, &log->sb_list, log_list) {

		filemap_fdatawrite(sbi->ipbmap->i_mapping);

		filemap_fdatawrite(sbi->ipimap->i_mapping);

		filemap_fdatawrite(sbi->direct_inode->i_mapping);

	}

	write_special_inodes(log, filemap_fdatawrite);



	/*

	 * If there was recent activity, we may need to wait
@@ -1611,6 +1608,7 @@ void jfs_flush_journal(struct jfs_log *log, int wait) 
	if ((!list_empty(&log->cqueue)) || !list_empty(&log->synclist)) {

		for (i = 0; i < 200; i++) {	/* Too much? */

			msleep(250);

			write_special_inodes(log, filemap_fdatawrite);

			if (list_empty(&log->cqueue) &&

			    list_empty(&log->synclist))

				break;

fs/jfs/jfs_umount.c

+2 −2
Original line number Diff line number Diff line
@@ -68,7 +68,7 @@ int jfs_umount(struct super_block *sb) 
		/*

		 * Wait for outstanding transactions to be written to log:

		 */

		jfs_flush_journal(log, 2);

		jfs_flush_journal(log, 1);



	/*

	 * close fileset inode allocation map (aka fileset inode)
@@ -146,7 +146,7 @@ int jfs_umount_rw(struct super_block *sb) 
	 *

	 * remove file system from log active file system list.

	 */

	jfs_flush_journal(log, 2);

	jfs_flush_journal(log, 1);



	/*

	 * Make sure all metadata makes it to disk