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Commit a2a9537a authored by Jens Axboe's avatar Jens Axboe
Browse files

Get rid of pdflush_operation() in emergency sync and remount 



Opencode a cheasy approach with kevent. The idea here is that we'll
add some generic delayed work infrastructure, which probably wont be
based on pdflush (or maybe it will, in which case we can just add it
back).

This is in preparation for getting rid of pdflush completely.

Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 6933c02e

fs/super.c

+9 −2
Original line number Diff line number Diff line
@@ -674,7 +674,7 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force) 
	return 0;

}



static void do_emergency_remount(unsigned long foo)

static void do_emergency_remount(struct work_struct *work)

{

	struct super_block *sb;
@@ -697,12 +697,19 @@ static void do_emergency_remount(unsigned long foo) 
		spin_lock(&sb_lock);

	}

	spin_unlock(&sb_lock);

	kfree(work);

	printk("Emergency Remount complete\n");

}



void emergency_remount(void)

{

	pdflush_operation(do_emergency_remount, 0);

	struct work_struct *work;



	work = kmalloc(sizeof(*work), GFP_ATOMIC);

	if (work) {

		INIT_WORK(work, do_emergency_remount);

		schedule_work(work);

	}

}



/*

fs/sync.c

+13 −1
Original line number Diff line number Diff line
@@ -42,9 +42,21 @@ SYSCALL_DEFINE0(sync) 
	return 0;

}



static void do_sync_work(struct work_struct *work)

{

	do_sync(0);

	kfree(work);

}



void emergency_sync(void)

{

	pdflush_operation(do_sync, 0);

	struct work_struct *work;



	work = kmalloc(sizeof(*work), GFP_ATOMIC);

	if (work) {

		INIT_WORK(work, do_sync_work);

		schedule_work(work);

	}

}



/*