Return-Path: Received: from daytona.panasas.com ([67.152.220.89]:38038 "EHLO daytona.panasas.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753501Ab1EIRKa (ORCPT ); Mon, 9 May 2011 13:10:30 -0400 From: Benny Halevy To: Trond Myklebust , Boaz Harrosh Cc: linux-nfs@vger.kernel.org, Andy Adamson , Benny Halevy Subject: [PATCH v2 21/29] pnfs: layoutret_on_setattr Date: Mon, 9 May 2011 20:10:23 +0300 Message-Id: <1304961023-4569-1-git-send-email-bhalevy@panasas.com> In-Reply-To: <4DC81E8C.6040901@panasas.com> References: <4DC81E8C.6040901@panasas.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Content-Type: text/plain MIME-Version: 1.0 From: Andy Adamson Signed-off-by: Andy Adamson Signed-off-by: Benny Halevy --- fs/nfs/nfs4proc.c | 3 +++ fs/nfs/objlayout/objio_osd.c | 1 + fs/nfs/pnfs.h | 22 ++++++++++++++++++++++ 3 files changed, 26 insertions(+), 0 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 05ed4c8..faa1240 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2332,6 +2332,9 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, struct nfs4_state *state = NULL; int status; + if (pnfs_ld_layoutret_on_setattr(inode)) + pnfs_return_layout(inode); + nfs_fattr_init(fattr); /* Search for an existing open(O_WRITE) file */ diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index 93b9580..c47c953 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -716,6 +716,7 @@ ssize_t objio_write_pagelist(struct objlayout_io_state *ol_state, bool stable) static struct pnfs_layoutdriver_type objlayout_type = { .id = LAYOUT_OSD2_OBJECTS, .name = "LAYOUT_OSD2_OBJECTS", + .flags = PNFS_LAYOUTRET_ON_SETATTR, .set_layoutdriver = objlayout_set_layoutdriver, .unset_layoutdriver = objlayout_unset_layoutdriver, diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 63f51b7..a54e715 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -65,12 +65,18 @@ enum { NFS_LAYOUT_DESTROYED, /* no new use of layout allowed */ }; +enum layoutdriver_policy_flags { + /* Should the pNFS client commit and return the layout upon a setattr */ + PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, +}; + /* Per-layout driver specific registration structure */ struct pnfs_layoutdriver_type { struct list_head pnfs_tblid; const u32 id; const char *name; struct module *owner; + unsigned flags; int (*set_layoutdriver) (struct nfs_server *); int (*unset_layoutdriver) (struct nfs_server *); @@ -238,6 +244,16 @@ static inline void pnfs_clear_request_commit(struct nfs_page *req) put_lseg(req->wb_commit_lseg); } +/* Should the pNFS client commit and return the layout upon a setattr */ +static inline bool +pnfs_ld_layoutret_on_setattr(struct inode *inode) +{ + if (!pnfs_enabled_sb(NFS_SERVER(inode))) + return false; + return NFS_SERVER(inode)->pnfs_curr_ld->flags & + PNFS_LAYOUTRET_ON_SETATTR; +} + static inline int pnfs_return_layout(struct inode *ino) { struct nfs_inode *nfsi = NFS_I(ino); @@ -296,6 +312,12 @@ static inline int pnfs_return_layout(struct inode *ino) } static inline bool +pnfs_ld_layoutret_on_setattr(struct inode *inode) +{ + return false; +} + +static inline bool pnfs_roc(struct inode *ino) { return false; -- 1.7.3.4