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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).