From 5e36e2a9411210b1f81982af02504cd20f5c91d5 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 6 Oct 2016 12:08:51 -0400 Subject: [PATCH] pnfs: Change pnfs_alloc_init_layoutget_args call signature Don't send in a layout, instead use the (possibly NULL) inode. This is needed for LAYOUTGET attached to an OPEN where the inode is not yet set. Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/pnfs.c | 40 ++++++++++++++++++++++++++++------------ 1 file changed, 28 insertions(+), 12 deletions(-) diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 11148414b9b6..07f1bbd9100c 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -916,18 +916,31 @@ pnfs_layoutgets_blocked(const struct pnfs_layout_hdr *lo) test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags); } +static struct nfs_server * +pnfs_find_server(struct inode *inode, struct nfs_open_context *ctx) +{ + struct nfs_server *server; + + if (inode) + server = NFS_SERVER(inode); + else { + struct dentry *parent_dir = dget_parent(ctx->dentry); + server = NFS_SERVER(parent_dir->d_inode); + dput(parent_dir); + } + return server; +} + static struct nfs4_layoutget * -pnfs_alloc_init_layoutget_args(struct pnfs_layout_hdr *lo, +pnfs_alloc_init_layoutget_args(struct inode *ino, struct nfs_open_context *ctx, nfs4_stateid *stateid, const struct pnfs_layout_range *range, gfp_t gfp_flags) { - struct inode *ino = lo->plh_inode; - struct nfs_server *server = NFS_SERVER(ino); + struct nfs_server *server = pnfs_find_server(ino, ctx); size_t max_pages = max_response_pages(server); struct nfs4_layoutget *lgp; - loff_t i_size; dprintk("--> %s\n", __func__); @@ -944,16 +957,19 @@ pnfs_alloc_init_layoutget_args(struct pnfs_layout_hdr *lo, lgp->res.layoutp = &lgp->args.layout; - i_size = i_size_read(ino); lgp->args.minlength = PAGE_SIZE; if (lgp->args.minlength > range->length) lgp->args.minlength = range->length; - if (range->iomode == IOMODE_READ) { - if (range->offset >= i_size) - lgp->args.minlength = 0; - else if (i_size - range->offset < lgp->args.minlength) - lgp->args.minlength = i_size - range->offset; + if (ino) { + loff_t i_size = i_size_read(ino); + + if (range->iomode == IOMODE_READ) { + if (range->offset >= i_size) + lgp->args.minlength = 0; + else if (i_size - range->offset < lgp->args.minlength) + lgp->args.minlength = i_size - range->offset; + } } lgp->args.maxcount = PNFS_LAYOUT_MAXSIZE; pnfs_copy_range(&lgp->args.range, range); @@ -962,7 +978,7 @@ pnfs_alloc_init_layoutget_args(struct pnfs_layout_hdr *lo, lgp->args.ctx = get_nfs_open_context(ctx); nfs4_stateid_copy(&lgp->args.stateid, stateid); lgp->gfp_flags = gfp_flags; - lgp->cred = lo->plh_lc_cred; + lgp->cred = ctx->cred; return lgp; } @@ -1838,7 +1854,7 @@ lookup_again: if (arg.length != NFS4_MAX_UINT64) arg.length = PAGE_ALIGN(arg.length); - lgp = pnfs_alloc_init_layoutget_args(lo, ctx, &stateid, &arg, gfp_flags); + lgp = pnfs_alloc_init_layoutget_args(ino, ctx, &stateid, &arg, gfp_flags); if (!lgp) { trace_pnfs_update_layout(ino, pos, count, iomode, lo, NULL, PNFS_UPDATE_LAYOUT_NOMEM); -- 2.30.2