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authorScott Mayhew <smayhew@redhat.com>2019-12-10 07:31:14 -0500
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2020-01-15 10:15:17 -0500
commit62a55d088cd87d480a6fd67b0d63b14ccae80838 (patch)
tree0ddc759236070f35409b58c8a30a01610978c6a1 /fs/nfs/super.c
parentf2aedb713c284429987dc66c7aaf38decfc8da2a (diff)
downloadlinux-62a55d088cd87d480a6fd67b0d63b14ccae80838.tar.bz2
NFS: Additional refactoring for fs_context conversion
Split out from commit "NFS: Add fs_context support." This patch adds additional refactoring for the conversion of NFS to use fs_context, namely: (*) Merge nfs_mount_info and nfs_clone_mount into nfs_fs_context. nfs_clone_mount has had several fields removed, and nfs_mount_info has been removed altogether. (*) Various functions now take an fs_context as an argument instead of nfs_mount_info, nfs_fs_context, etc. Signed-off-by: Scott Mayhew <smayhew@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c48
1 files changed, 22 insertions, 26 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 6ff99da978a8..ed0290d5ebf3 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -745,11 +745,12 @@ out:
* Use the remote server's MOUNT service to request the NFS file handle
* corresponding to the provided path.
*/
-static int nfs_request_mount(struct nfs_fs_context *ctx,
+static int nfs_request_mount(struct fs_context *fc,
struct nfs_fh *root_fh,
rpc_authflavor_t *server_authlist,
unsigned int *server_authlist_len)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_mount_request request = {
.sap = (struct sockaddr *)
&ctx->mount_server.address,
@@ -759,7 +760,7 @@ static int nfs_request_mount(struct nfs_fs_context *ctx,
.noresvport = ctx->flags & NFS_MOUNT_NORESVPORT,
.auth_flav_len = server_authlist_len,
.auth_flavs = server_authlist,
- .net = ctx->net,
+ .net = fc->net_ns,
};
int status;
@@ -804,20 +805,18 @@ static int nfs_request_mount(struct nfs_fs_context *ctx,
return 0;
}
-static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_info)
+static struct nfs_server *nfs_try_mount_request(struct fs_context *fc)
{
+ struct nfs_fs_context *ctx = nfs_fc2context(fc);
int status;
unsigned int i;
bool tried_auth_unix = false;
bool auth_null_in_list = false;
struct nfs_server *server = ERR_PTR(-EACCES);
- struct nfs_fs_context *ctx = mount_info->ctx;
rpc_authflavor_t authlist[NFS_MAX_SECFLAVORS];
unsigned int authlist_len = ARRAY_SIZE(authlist);
- struct nfs_subversion *nfs_mod = mount_info->nfs_mod;
- status = nfs_request_mount(ctx, mount_info->mntfh, authlist,
- &authlist_len);
+ status = nfs_request_mount(fc, ctx->mntfh, authlist, &authlist_len);
if (status)
return ERR_PTR(status);
@@ -831,7 +830,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
ctx->selected_flavor);
if (status)
return ERR_PTR(status);
- return nfs_mod->rpc_ops->create_server(mount_info);
+ return ctx->nfs_mod->rpc_ops->create_server(fc);
}
/*
@@ -858,7 +857,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
}
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", flavor);
ctx->selected_flavor = flavor;
- server = nfs_mod->rpc_ops->create_server(mount_info);
+ server = ctx->nfs_mod->rpc_ops->create_server(fc);
if (!IS_ERR(server))
return server;
}
@@ -874,7 +873,7 @@ static struct nfs_server *nfs_try_mount_request(struct nfs_mount_info *mount_inf
/* Last chance! Try AUTH_UNIX */
dfprintk(MOUNT, "NFS: attempting to use auth flavor %u\n", RPC_AUTH_UNIX);
ctx->selected_flavor = RPC_AUTH_UNIX;
- return nfs_mod->rpc_ops->create_server(mount_info);
+ return ctx->nfs_mod->rpc_ops->create_server(fc);
}
int nfs_try_get_tree(struct fs_context *fc)
@@ -882,9 +881,9 @@ int nfs_try_get_tree(struct fs_context *fc)
struct nfs_fs_context *ctx = nfs_fc2context(fc);
if (ctx->need_mount)
- ctx->mount_info.server = nfs_try_mount_request(&ctx->mount_info);
+ ctx->server = nfs_try_mount_request(fc);
else
- ctx->mount_info.server = ctx->mount_info.nfs_mod->rpc_ops->create_server(&ctx->mount_info);
+ ctx->server = ctx->nfs_mod->rpc_ops->create_server(fc);
return nfs_get_tree_common(fc);
}
@@ -966,9 +965,8 @@ EXPORT_SYMBOL_GPL(nfs_reconfigure);
/*
* Finish setting up an NFS superblock
*/
-static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info)
+static void nfs_fill_super(struct super_block *sb, struct nfs_fs_context *ctx)
{
- struct nfs_fs_context *ctx = mount_info->ctx;
struct nfs_server *server = NFS_SB(sb);
sb->s_blocksize_bits = 0;
@@ -1009,13 +1007,14 @@ static void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_
nfs_super_set_maxbytes(sb, server->maxfilesize);
}
-static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b, int flags)
+static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b,
+ const struct fs_context *fc)
{
const struct nfs_server *a = s->s_fs_info;
const struct rpc_clnt *clnt_a = a->client;
const struct rpc_clnt *clnt_b = b->client;
- if ((s->s_flags & NFS_MS_MASK) != (flags & NFS_MS_MASK))
+ if ((s->s_flags & NFS_SB_MASK) != (fc->sb_flags & NFS_SB_MASK))
goto Ebusy;
if (a->nfs_client != b->nfs_client)
goto Ebusy;
@@ -1122,7 +1121,7 @@ static int nfs_compare_super(struct super_block *sb, struct fs_context *fc)
return 0;
if (!nfs_compare_userns(old, server))
return 0;
- return nfs_compare_mount_options(sb, server, fc->sb_flags);
+ return nfs_compare_mount_options(sb, server, fc);
}
#ifdef CONFIG_NFS_FSCACHE
@@ -1177,13 +1176,12 @@ int nfs_get_tree_common(struct fs_context *fc)
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct super_block *s;
- struct dentry *mntroot = ERR_PTR(-ENOMEM);
int (*compare_super)(struct super_block *, struct fs_context *) = nfs_compare_super;
- struct nfs_server *server = ctx->mount_info.server;
+ struct nfs_server *server = ctx->server;
unsigned long kflags = 0, kflags_out = 0;
int error;
- ctx->mount_info.server = NULL;
+ ctx->server = NULL;
if (IS_ERR(server))
return PTR_ERR(server);
@@ -1224,9 +1222,9 @@ int nfs_get_tree_common(struct fs_context *fc)
}
if (!s->s_root) {
- unsigned bsize = ctx->mount_info.inherited_bsize;
+ unsigned bsize = ctx->clone_data.inherited_bsize;
/* initial superblock/root creation */
- nfs_fill_super(s, &ctx->mount_info);
+ nfs_fill_super(s, ctx);
if (bsize) {
s->s_blocksize_bits = bsize;
s->s_blocksize = 1U << bsize;
@@ -1234,13 +1232,11 @@ int nfs_get_tree_common(struct fs_context *fc)
nfs_get_cache_cookie(s, ctx);
}
- mntroot = nfs_get_root(s, ctx->mount_info.mntfh, fc->source);
- if (IS_ERR(mntroot)) {
- error = PTR_ERR(mntroot);
+ error = nfs_get_root(s, fc);
+ if (error < 0) {
dfprintk(MOUNT, "NFS: Couldn't get root dentry\n");
goto error_splat_super;
}
- fc->root = mntroot;
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
kflags |= SECURITY_LSM_NATIVE_LABELS;