From: Fengguang Wu <fengguang.wu@intel.com>
To: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 7/7] writeback: Avoid iput() from flusher thread
Date: Thu, 22 Mar 2012 11:01:06 +0800 [thread overview]
Message-ID: <20120322030106.GB20507@localhost> (raw)
In-Reply-To: <1332284191-21076-8-git-send-email-jack@suse.cz>
> +/*
> + * Sleep until I_SYNC is cleared. This function must be called with i_lock
> + * held and drops it. It is aimed for callers not holding any inode reference
> + * so once i_lock is dropped, inode can go away.
> + */
> +static void inode_sleep_on_writeback(struct inode *inode)
> + __releases(inode->i_lock)
> +{
> + DEFINE_WAIT(wait);
> + wait_queue_head_t *wqh = bit_waitqueue(&inode->i_state, __I_SYNC);
> + int sleep;
i_state is "unsigned long", it's better to use the same type.
> +
> + prepare_to_wait(wqh, &wait, TASK_UNINTERRUPTIBLE);
> + sleep = inode->i_state & I_SYNC;
> + spin_unlock(&inode->i_lock);
> + if (sleep)
> + schedule();
> + finish_wait(wqh, &wait);
> +}
> +
next prev parent reply other threads:[~2012-03-22 3:01 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-20 22:56 [PATCH 0/7 v2] writeback: Avoid iput() from flusher thread Jan Kara
2012-03-20 22:56 ` [PATCH 1/7] writeback: Move clearing of I_SYNC into inode_sync_complete() Jan Kara
2012-04-30 14:36 ` Christoph Hellwig
2012-04-30 21:30 ` Jan Kara
2012-03-20 22:56 ` [PATCH 2/7] writeback: Move requeueing when I_SYNC set to writeback_sb_inodes() Jan Kara
2012-04-30 14:38 ` Christoph Hellwig
2012-03-20 22:56 ` [PATCH 3/7] writeback: Move I_DIRTY_PAGES handling Jan Kara
2012-03-22 2:41 ` Fengguang Wu
2012-03-22 8:35 ` Jan Kara
2012-03-28 3:11 ` Fengguang Wu
2012-03-28 15:12 ` Christoph Hellwig
2012-04-30 14:39 ` Christoph Hellwig
2012-04-30 14:41 ` Christoph Hellwig
2012-04-30 21:21 ` Jan Kara
2012-03-20 22:56 ` [PATCH 4/7] writeback: Separate inode requeueing after writeback Jan Kara
2012-04-30 14:43 ` Christoph Hellwig
2012-04-30 21:42 ` Jan Kara
2012-03-20 22:56 ` [PATCH 5/7] writeback: Remove wb->list_lock from writeback_single_inode() Jan Kara
2012-04-30 14:44 ` Christoph Hellwig
2012-03-20 22:56 ` [PATCH 6/7] writeback: Refactor writeback_single_inode() Jan Kara
2012-03-20 23:35 ` Dave Chinner
2012-03-21 10:03 ` Jan Kara
2012-04-30 14:46 ` Christoph Hellwig
2012-03-20 22:56 ` [PATCH 7/7] writeback: Avoid iput() from flusher thread Jan Kara
2012-03-20 23:50 ` Dave Chinner
2012-03-21 10:25 ` Jan Kara
2012-03-22 3:03 ` Fengguang Wu
2012-03-22 6:27 ` Dave Chinner
2012-03-22 9:50 ` Jan Kara
2012-03-22 3:01 ` Fengguang Wu [this message]
2012-04-30 15:30 ` Christoph Hellwig
2012-04-30 21:58 ` Jan Kara
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120322030106.GB20507@localhost \
--to=fengguang.wu@intel.com \
--cc=hch@infradead.org \
--cc=jack@suse.cz \
--cc=linux-fsdevel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.