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| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 18:14:05 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 18:14:05 +0200 |
| commit | 4aef2ec9022b217f74d0f4c9b84081f07cc223d9 (patch) | |
| tree | edf9bb9ca1f8ab6345c156a7e87aaed28939f66c /fs/nfs/super.c | |
| parent | KVM: SVM: do not allow VMRUN inside SMM (diff) | |
| parent | KVM: x86: Fix pkru save/restore when guest CR4.PKE=0, move it to x86.c (diff) | |
| download | linux-4aef2ec9022b217f74d0f4c9b84081f07cc223d9.tar.xz linux-4aef2ec9022b217f74d0f4c9b84081f07cc223d9.zip | |
Merge branch 'kvm-amd-fixes' into HEAD
Diffstat (limited to 'fs/nfs/super.c')
| -rw-r--r-- | fs/nfs/super.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index bb14bede6da5..59ef3b13ccca 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -176,6 +176,41 @@ void nfs_sb_deactive(struct super_block *sb) } EXPORT_SYMBOL_GPL(nfs_sb_deactive); +static int __nfs_list_for_each_server(struct list_head *head, + int (*fn)(struct nfs_server *, void *), + void *data) +{ + struct nfs_server *server, *last = NULL; + int ret = 0; + + rcu_read_lock(); + list_for_each_entry_rcu(server, head, client_link) { + if (!nfs_sb_active(server->super)) + continue; + rcu_read_unlock(); + if (last) + nfs_sb_deactive(last->super); + last = server; + ret = fn(server, data); + if (ret) + goto out; + rcu_read_lock(); + } + rcu_read_unlock(); +out: + if (last) + nfs_sb_deactive(last->super); + return ret; +} + +int nfs_client_for_each_server(struct nfs_client *clp, + int (*fn)(struct nfs_server *, void *), + void *data) +{ + return __nfs_list_for_each_server(&clp->cl_superblocks, fn, data); +} +EXPORT_SYMBOL_GPL(nfs_client_for_each_server); + /* * Deliver file system statistics to userspace */ |