[00/11] nfs: improve use of wake_up_bit and wake_up_var

Message ID	20241206021830.3526922-1-neilb@suse.de (mailing list archive)
Headers	show Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 89C7F2AE9A for <linux-nfs@vger.kernel.org>; Fri, 6 Dec 2024 02:18:57 +0000 (UTC) From: NeilBrown <neilb@suse.de> To: Trond Myklebust <trondmy@kernel.org>, Anna Schumaker <anna@kernel.org> Cc: linux-nfs@vger.kernel.org Subject: [PATCH 00/11] nfs: improve use of wake_up_bit and wake_up_var Date: Fri, 6 Dec 2024 13:15:26 +1100 Message-ID: <20241206021830.3526922-1-neilb@suse.de> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit default: False [-2.18 / 50.00]; BAYES_HAM(-2.17)[96.05%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:mid]; ASN(0.00)[asn:25478, ipnet:::/0, country:RU]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[suse.de:+]
Series	nfs: improve use of wake_up_bit and wake_up_var \| expand [00/11] nfs: improve use of wake_up_bit and wake_up_var [01/11] sunrpc: remove explicit barrier from rpc_make_runnable() [02/11] sunrpc: use clear_and_wake_up_bit() for XPRT_LOCKED. [03/11] nfs: use clear_and_wake_up_bit(). [04/11] nfs: combine NFS_LAYOUT_RETURN and NFS_LAYOUT_RETURN_LOCK [05/11] nfs: use clear_and_wake_up_bit() in pnfs code [06/11] nfs: use store_release_wake_up() for clearing d_fsdata [07/11] sunrpc: discard rpc_wait_bit_killable() [08/11] nfs: discard nfs_wait_bit_killable() [09/11] nfs: add memory barrier before calling wake_up_var on cl_state [10/11] nfs: use atomic_dec_and_wake_up() [11/11] nfs: use wait_var_event_spinlock() to wait for nfsi->layout to change.

Message ID

20241206021830.3526922-1-neilb@suse.de (mailing list archive)

Headers

From: NeilBrown <neilb@suse.de>
To: Trond Myklebust <trondmy@kernel.org>,
	Anna Schumaker <anna@kernel.org>
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH 00/11] nfs: improve use of wake_up_bit and wake_up_var
Date: Fri,  6 Dec 2024 13:15:26 +1100
Message-ID: <20241206021830.3526922-1-neilb@suse.de>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Series

nfs: improve use of wake_up_bit and wake_up_var | expand

Message

NeilBrown Dec. 6, 2024, 2:15 a.m. UTC

wake_up_bit and wake_up_var are fragile interfaces as they sometimes
require a barrier before them.  Recently some new interfaces were added
which avoid the need for explicit barriers.  If we can remove all
instances of those fragile interfaces, that would be ideal.

Unforunately there is one can in NFS that does not fit the new
interfaces.  However most do.  This series replaces most use of the old
interfaces with the new, and adds various related cleanups.

Thanks,
NeilBrown