From 287bd3e95452e8ad945854bb98a3a7fbdc2a05c9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 2 Dec 2016 16:12:12 -0500 Subject: [PATCH] pNFS: Add a layoutreturn callback to performa layout-private setup Add a callback to allow the flexfiles layout driver to initialise the layout private payload. Signed-off-by: Trond Myklebust --- fs/nfs/pnfs.c | 14 +++++++++++++- fs/nfs/pnfs.h | 1 + 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 4631d15227ae..2a3431314c23 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1072,6 +1072,7 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, const nfs4_stateid *stateid, enum pnfs_iomode iomode, bool sync) { struct inode *ino = lo->plh_inode; + struct pnfs_layoutdriver_type *ld = NFS_SERVER(ino)->pnfs_curr_ld; struct nfs4_layoutreturn *lrp; int status = 0; @@ -1089,6 +1090,8 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, const nfs4_stateid *stateid, lrp->args.ld_private = &lrp->ld_private; lrp->clp = NFS_SERVER(ino)->nfs_client; lrp->cred = lo->plh_lc_cred; + if (ld->prepare_layoutreturn) + ld->prepare_layoutreturn(&lrp->args); status = nfs4_proc_layoutreturn(lrp, sync); out: @@ -1310,9 +1313,15 @@ retry: out_noroc: spin_unlock(&ino->i_lock); pnfs_layoutcommit_inode(ino, true); + if (roc) { + struct pnfs_layoutdriver_type *ld = NFS_SERVER(ino)->pnfs_curr_ld; + if (ld->prepare_layoutreturn) + ld->prepare_layoutreturn(args); + return true; + } if (layoutreturn) pnfs_send_layoutreturn(lo, &stateid, iomode, true); - return roc; + return false; } void pnfs_roc_release(struct nfs4_layoutreturn_args *args, @@ -1322,6 +1331,7 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args, struct pnfs_layout_hdr *lo = args->layout; const nfs4_stateid *arg_stateid = NULL; const nfs4_stateid *res_stateid = NULL; + struct nfs4_xdr_opaque_data *ld_private = args->ld_private; if (ret == 0) { arg_stateid = &args->stateid; @@ -1330,6 +1340,8 @@ void pnfs_roc_release(struct nfs4_layoutreturn_args *args, } pnfs_layoutreturn_free_lsegs(lo, arg_stateid, &args->range, res_stateid); + if (ld_private && ld_private->ops && ld_private->ops->free) + ld_private->ops->free(ld_private); pnfs_put_layout_hdr(lo); trace_nfs4_layoutreturn_on_close(args->inode, 0); } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 459ac2c74af8..d1e028175cd1 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -172,6 +172,7 @@ struct pnfs_layoutdriver_type { (struct nfs_server *server, struct pnfs_device *pdev, gfp_t gfp_flags); + int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *); void (*encode_layoutreturn) (struct xdr_stream *xdr, const struct nfs4_layoutreturn_args *args); -- 2.11.0