From patchwork Wed Apr 20 17:29:22 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benny Halevy X-Patchwork-Id: 722531 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p3KHRc19023058 for ; Wed, 20 Apr 2011 17:29:25 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755499Ab1DTR3Z (ORCPT ); Wed, 20 Apr 2011 13:29:25 -0400 Received: from daytona.panasas.com ([67.152.220.89]:57231 "EHLO daytona.panasas.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751366Ab1DTR3Y (ORCPT ); Wed, 20 Apr 2011 13:29:24 -0400 Received: from lt.bhalevy.com ([172.17.33.135]) by daytona.panasas.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 20 Apr 2011 13:29:23 -0400 From: Benny Halevy To: linux-nfs@vger.kernel.org Subject: [RFC 25/27] pnfs-obj: objlayout_encode_layoutcommit implementation Date: Wed, 20 Apr 2011 20:29:22 +0300 Message-Id: <1303320562-21898-1-git-send-email-bhalevy@panasas.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <4DAF0DE1.6020609@panasas.com> References: <4DAF0DE1.6020609@panasas.com> X-OriginalArrivalTime: 20 Apr 2011 17:29:24.0109 (UTC) FILETIME=[7DC413D0:01CBFF80] Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 20 Apr 2011 17:29:25 +0000 (UTC) From: Boaz Harrosh * Define API for io-engines to report delta_space_used in IOs * Encode the osd-layout specific information of the layoutcommit XDR buffer. Signed-off-by: Boaz Harrosh [check for OBJ_DSU_INVALID in objlayout_add_delta_space_used under lock] [use new alloc/free_layout API] [apply types rename] [convert to new pnfs-submit changes] [fixup encode_layoutcommit arguments] [fixup layoutcommit methods args] [use pnfs_layout_hdr and layout_segment field prefix] Signed-off-by: Benny Halevy --- fs/nfs/objlayout/objio_osd.c | 1 + fs/nfs/objlayout/objlayout.c | 30 ++++++++++++++++++++++++++++++ fs/nfs/objlayout/objlayout.h | 25 +++++++++++++++++++++++++ 3 files changed, 56 insertions(+), 0 deletions(-) diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index 027ba38..179dfbd 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -755,6 +755,7 @@ static struct pnfs_layoutdriver_type objlayout_type = { .write_pagelist = objlayout_write_pagelist, .encode_layoutreturn = objlayout_encode_layoutreturn, + .encode_layoutcommit = objlayout_encode_layoutcommit, }; void *objio_init_mt(void) diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index 322ffa3..2cf139c 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -247,6 +247,7 @@ objlayout_iodone(struct objlayout_io_state *state) struct objlayout *objlay = OBJLAYOUT(state->objlseg->lseg.pls_layout); spin_lock(&objlay->lock); + objlay->delta_space_valid = OBJ_DSU_INVALID; list_add(&objlay->err_list, &state->err_list); spin_unlock(&objlay->lock); } @@ -455,6 +456,35 @@ objlayout_write_pagelist(struct nfs_write_data *wdata, return PNFS_ATTEMPTED; } +void +objlayout_encode_layoutcommit(struct pnfs_layout_hdr *pnfslay, + struct xdr_stream *xdr, + const struct nfs4_layoutcommit_args *args) +{ + struct objlayout *objlay = OBJLAYOUT(pnfslay); + struct pnfs_osd_layoutupdate lou; + __be32 *start; + + dprintk("%s: Begin\n", __func__); + + spin_lock(&objlay->lock); + lou.dsu_valid = (objlay->delta_space_valid == OBJ_DSU_VALID); + lou.dsu_delta = objlay->delta_space_used; + objlay->delta_space_used = 0; + objlay->delta_space_valid = OBJ_DSU_INIT; + lou.olu_ioerr_flag = !list_empty(&objlay->err_list); + spin_unlock(&objlay->lock); + + start = xdr_reserve_space(xdr, 4); + + BUG_ON(pnfs_osd_xdr_encode_layoutupdate(xdr, &lou)); + + *start = cpu_to_be32((xdr->p - start - 1) * 4); + + dprintk("%s: Return delta_space_used %lld err %d\n", __func__, + lou.dsu_delta, lou.olu_ioerr_flag); +} + static int err_prio(u32 oer_errno) { diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h index 65f8d44..fb0bf93 100644 --- a/fs/nfs/objlayout/objlayout.h +++ b/fs/nfs/objlayout/objlayout.h @@ -62,6 +62,14 @@ struct objlayout_segment { struct objlayout { struct pnfs_layout_hdr pnfs_layout; + /* for layout_commit */ + enum osd_delta_space_valid_enum { + OBJ_DSU_INIT = 0, + OBJ_DSU_VALID, + OBJ_DSU_INVALID, + } delta_space_valid; + s64 delta_space_used; /* consumed by write ops */ + /* for layout_return */ spinlock_t lock; struct list_head err_list; @@ -129,6 +137,23 @@ extern void objlayout_io_set_result(struct objlayout_io_state *state, unsigned index, int osd_error, u64 offset, u64 length, bool is_write); +static inline void +objlayout_add_delta_space_used(struct objlayout_io_state *state, s64 space_used) +{ + struct objlayout *objlay = OBJLAYOUT(state->objlseg->lseg.pls_layout); + + /* If one of the I/Os errored out and the delta_space_used was + * invalid we render the complete report as invalid. Protocol mandate + * the DSU be accurate or not reported. + */ + spin_lock(&objlay->lock); + if (objlay->delta_space_valid != OBJ_DSU_INVALID) { + objlay->delta_space_valid = OBJ_DSU_VALID; + objlay->delta_space_used += space_used; + } + spin_unlock(&objlay->lock); +} + extern void objlayout_read_done(struct objlayout_io_state *state, ssize_t status, bool sync); extern void objlayout_write_done(struct objlayout_io_state *state,