From: NeilBrown <neilb@suse.com>
To: Jeff Layton <jlayton@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>,
Martin Wilck <mwilck@suse.de>,
linux-fsdevel@vger.kernel.org,
Frank Filz <ffilzlnx@mindspring.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/9] fs/locks: split out __locks_wake_up_blocks().
Date: Wed, 24 Oct 2018 09:43:54 +1100 [thread overview]
Message-ID: <154033463440.29542.7694639999612998712.stgit@noble> (raw)
In-Reply-To: <154033435272.29542.13985568983074440924.stgit@noble>
This functionality will be useful in future patches, so
split it out from locks_wake_up_blocks().
Signed-off-by: NeilBrown <neilb@suse.com>
---
fs/locks.c | 27 ++++++++++++++++-----------
1 file changed, 16 insertions(+), 11 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index a6c6d601286c..b8f33792a0a6 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -672,6 +672,21 @@ static void __locks_delete_block(struct file_lock *waiter)
waiter->fl_blocker = NULL;
}
+static void __locks_wake_up_blocks(struct file_lock *blocker)
+{
+ while (!list_empty(&blocker->fl_blocked)) {
+ struct file_lock *waiter;
+
+ waiter = list_first_entry(&blocker->fl_blocked,
+ struct file_lock, fl_block);
+ __locks_delete_block(waiter);
+ if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
+ waiter->fl_lmops->lm_notify(waiter);
+ else
+ wake_up(&waiter->fl_wait);
+ }
+}
+
static void locks_delete_block(struct file_lock *waiter)
{
spin_lock(&blocked_lock_lock);
@@ -726,17 +741,7 @@ static void locks_wake_up_blocks(struct file_lock *blocker)
return;
spin_lock(&blocked_lock_lock);
- while (!list_empty(&blocker->fl_blocked)) {
- struct file_lock *waiter;
-
- waiter = list_first_entry(&blocker->fl_blocked,
- struct file_lock, fl_block);
- __locks_delete_block(waiter);
- if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
- waiter->fl_lmops->lm_notify(waiter);
- else
- wake_up(&waiter->fl_wait);
- }
+ __locks_wake_up_blocks(blocker);
spin_unlock(&blocked_lock_lock);
}
next prev parent reply other threads:[~2018-10-23 22:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-23 22:43 [PATCH 0/9 v3] locks: avoid thundering-herd wake-ups NeilBrown
2018-10-23 22:43 ` [PATCH 8/9] locks: merge posix_unblock_lock() and locks_delete_block() NeilBrown
2018-10-23 22:43 ` [PATCH 6/9] fs/locks: change all *_conflict() functions to return bool NeilBrown
2018-10-23 22:43 ` [PATCH 3/9] NFS: use locks_copy_lock() to copy locks NeilBrown
2018-10-23 22:43 ` NeilBrown [this message]
2018-10-23 22:43 ` [PATCH 9/9] VFS: locks: remove unnecessary white space NeilBrown
2018-10-23 22:43 ` [PATCH 7/9] fs/locks: create a tree of dependent requests NeilBrown
2018-10-23 22:43 ` [PATCH 1/9] fs/locks: rename some lists and pointers NeilBrown
2018-10-23 22:43 ` [PATCH 4/9] fs/locks: allow a lock request to block other requests NeilBrown
2018-10-23 22:43 ` [PATCH 5/9] fs/locks: always delete_block after waiting NeilBrown
2018-10-25 16:04 ` [PATCH 0/9 v3] locks: avoid thundering-herd wake-ups J. Bruce Fields
2018-10-25 19:27 ` Martin Wilck
2018-10-26 13:46 ` Jeff Layton
2018-10-28 22:43 ` NeilBrown
2018-10-29 1:56 ` NeilBrown
2018-10-29 12:38 ` Jeff Layton
2018-10-30 12:04 ` Jeff Layton
2018-10-30 17:56 ` Jeff Layton
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=154033463440.29542.7694639999612998712.stgit@noble \
--to=neilb@suse.com \
--cc=bfields@fieldses.org \
--cc=ffilzlnx@mindspring.com \
--cc=jlayton@kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mwilck@suse.de \
--cc=viro@zeniv.linux.org.uk \
/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).