From 63d8a41b1dbf24dfc2480cb28236e2f6844d89b9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 21 Mar 2022 15:32:09 -0400 Subject: NFSv4/pnfs: Ensure pNFS allocation modes are consistent with nfsiod Ensure that pNFS allocations that can be called from rpciod/nfsiod callback can fail in low memory mode, so that the threads don't block and loop forever. Signed-off-by: Trond Myklebust --- fs/nfs/pnfs.c | 39 +++++++++++++++++---------------------- 1 file changed, 17 insertions(+), 22 deletions(-) (limited to 'fs/nfs/pnfs.c') diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index f089e11fd001..de318bb5d349 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1233,7 +1233,7 @@ pnfs_send_layoutreturn(struct pnfs_layout_hdr *lo, int status = 0; *pcred = NULL; - lrp = kzalloc(sizeof(*lrp), GFP_KERNEL); + lrp = kzalloc(sizeof(*lrp), nfs_io_gfp_mask()); if (unlikely(lrp == NULL)) { status = -ENOMEM; spin_lock(&ino->i_lock); @@ -2206,7 +2206,7 @@ _pnfs_grab_empty_layout(struct inode *ino, struct nfs_open_context *ctx) struct pnfs_layout_hdr *lo; spin_lock(&ino->i_lock); - lo = pnfs_find_alloc_layout(ino, ctx, GFP_KERNEL); + lo = pnfs_find_alloc_layout(ino, ctx, nfs_io_gfp_mask()); if (!lo) goto out_unlock; if (!test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) @@ -2249,8 +2249,8 @@ static void _lgopen_prepare_attached(struct nfs4_opendata *data, lo = _pnfs_grab_empty_layout(ino, ctx); if (!lo) return; - lgp = pnfs_alloc_init_layoutget_args(ino, ctx, ¤t_stateid, - &rng, GFP_KERNEL); + lgp = pnfs_alloc_init_layoutget_args(ino, ctx, ¤t_stateid, &rng, + nfs_io_gfp_mask()); if (!lgp) { pnfs_clear_first_layoutget(lo); nfs_layoutget_end(lo); @@ -2275,8 +2275,8 @@ static void _lgopen_prepare_floating(struct nfs4_opendata *data, }; struct nfs4_layoutget *lgp; - lgp = pnfs_alloc_init_layoutget_args(ino, ctx, ¤t_stateid, - &rng, GFP_KERNEL); + lgp = pnfs_alloc_init_layoutget_args(ino, ctx, ¤t_stateid, &rng, + nfs_io_gfp_mask()); if (!lgp) return; data->lgp = lgp; @@ -2691,13 +2691,11 @@ pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *r else rd_size = nfs_dreq_bytes_left(pgio->pg_dreq); - pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, - nfs_req_openctx(req), - req_offset(req), - rd_size, - IOMODE_READ, - false, - GFP_KERNEL); + pgio->pg_lseg = + pnfs_update_layout(pgio->pg_inode, nfs_req_openctx(req), + req_offset(req), rd_size, + IOMODE_READ, false, + nfs_io_gfp_mask()); if (IS_ERR(pgio->pg_lseg)) { pgio->pg_error = PTR_ERR(pgio->pg_lseg); pgio->pg_lseg = NULL; @@ -2718,13 +2716,10 @@ pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, pnfs_generic_pg_check_layout(pgio); pnfs_generic_pg_check_range(pgio, req); if (pgio->pg_lseg == NULL) { - pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, - nfs_req_openctx(req), - req_offset(req), - wb_size, - IOMODE_RW, - false, - GFP_KERNEL); + pgio->pg_lseg = + pnfs_update_layout(pgio->pg_inode, nfs_req_openctx(req), + req_offset(req), wb_size, IOMODE_RW, + false, nfs_io_gfp_mask()); if (IS_ERR(pgio->pg_lseg)) { pgio->pg_error = PTR_ERR(pgio->pg_lseg); pgio->pg_lseg = NULL; @@ -3183,7 +3178,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) status = -ENOMEM; /* Note kzalloc ensures data->res.seq_res.sr_slot == NULL */ - data = kzalloc(sizeof(*data), GFP_NOFS); + data = kzalloc(sizeof(*data), nfs_io_gfp_mask()); if (!data) goto clear_layoutcommitting; @@ -3250,7 +3245,7 @@ struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) { struct nfs4_threshold *thp; - thp = kzalloc(sizeof(*thp), GFP_KERNEL); + thp = kzalloc(sizeof(*thp), nfs_io_gfp_mask()); if (!thp) { dprintk("%s mdsthreshold allocation failed\n", __func__); return NULL; -- cgit v1.2.3