diff options
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayout.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 310d7500f665..22e164106333 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -9,6 +9,7 @@ #include <linux/nfs_fs.h> #include <linux/nfs_page.h> #include <linux/module.h> +#include <linux/sched/mm.h> #include <linux/sunrpc/metrics.h> @@ -415,6 +416,7 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, struct nfs4_ff_layout_mirror *mirror; struct auth_cred acred = { .group_info = ff_zero_group }; struct rpc_cred __rcu *cred; + struct cred *kcred; u32 ds_count, fh_count, id; int j; @@ -491,8 +493,23 @@ ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, acred.gid = make_kgid(&init_user_ns, id); + if (gfp_flags & __GFP_FS) + kcred = prepare_kernel_cred(NULL); + else { + unsigned int nofs_flags = memalloc_nofs_save(); + kcred = prepare_kernel_cred(NULL); + memalloc_nofs_restore(nofs_flags); + } + rc = -ENOMEM; + if (!kcred) + goto out_err_free; + kcred->fsuid = acred.uid; + kcred->fsgid = acred.gid; + acred.cred = kcred; + /* find the cred for it */ rcu_assign_pointer(cred, rpc_lookup_generic_cred(&acred, 0, gfp_flags)); + put_cred(kcred); if (IS_ERR(cred)) { rc = PTR_ERR(cred); goto out_err_free; |