Re: The bug of iput() removal from flusher thread?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Nov 21, 2012 at 02:48:51AM +0100, Jan Kara wrote:
> 
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index 51ea267..3e3422f 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -228,6 +228,8 @@ static void requeue_io(struct inode *inode, struct bdi_writeback *wb)
>  static void inode_sync_complete(struct inode *inode)
>  {
>  	inode->i_state &= ~I_SYNC;
> +	/* If inode is clean an unused, put it into LRU now... */
> +	inode_add_lru(inode);
>  	/* Waiters must see I_SYNC cleared before being woken up */
>  	smp_mb();
>  	wake_up_bit(&inode->i_state, __I_SYNC);
> diff --git a/fs/inode.c b/fs/inode.c
> index b03c719..8f6396f 100644
> --- a/fs/inode.c
> +++ b/fs/inode.c
> @@ -408,6 +408,19 @@ static void inode_lru_list_add(struct inode *inode)
>  	spin_unlock(&inode->i_sb->s_inode_lru_lock);
>  }
>  
> +/*
> + * Add inode to LRU if needed (inode is unused and clean).
> + *
> + * Needs inode->i_lock held.
> + */
> +void inode_add_lru(struct inode *inode)
> +{
> +	if (!(inode->i_state & (I_DIRTY | I_FREEING | I_SYNC)) &&
> +	    !atomic_read(&inode->i_count) && inode->i_sb->s_flags & MS_ACTIVE)
> +		inode_lru_list_add(inode);

Needs to avoid I_WILL_FREE as well. There's no point putting it on
the LRU if we are writing from iput_final()....

Otherwise looks OK.

Cheers,

Dave.
-- 
Dave Chinner
david@xxxxxxxxxxxxx
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux