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authorOlga Kornievskaia <kolga@netapp.com>2018-07-09 22:13:36 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2018-08-09 19:56:39 +0300
commit6b8d84e2f1299a5876ed812b137c49686cc85c7c (patch)
treed8b73b4a739266068ead6150f0f2def5708c12d6 /fs
parent539f57b3e0fdaad20ddb0a45913cefee0c8c29c1 (diff)
downloadlinux-6b8d84e2f1299a5876ed812b137c49686cc85c7c.tar.xz
NFS add a simple sync nfs4_proc_commit after async COPY
A COPY with unstable write data needs a simple sync commit. Filehandle value is gotten as a part of the inner loop so in case of a reboot retry it should get the new value. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/nfs42proc.c31
-rw-r--r--fs/nfs/nfs4_fs.h2
-rw-r--r--fs/nfs/nfs4proc.c34
3 files changed, 66 insertions, 1 deletions
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 77451be9d702..d158526d1044 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -185,6 +185,30 @@ out:
return status;
}
+static int process_copy_commit(struct file *dst, loff_t pos_dst,
+ struct nfs42_copy_res *res)
+{
+ struct nfs_commitres cres;
+ int status = -ENOMEM;
+
+ cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
+ if (!cres.verf)
+ goto out;
+
+ status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
+ if (status)
+ goto out_free;
+ if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
+ &cres.verf->verifier)) {
+ dprintk("commit verf differs from copy verf\n");
+ status = -EAGAIN;
+ }
+out_free:
+ kfree(cres.verf);
+out:
+ return status;
+}
+
static ssize_t _nfs42_proc_copy(struct file *src,
struct nfs_lock_context *src_lock,
struct file *dst,
@@ -251,6 +275,13 @@ static ssize_t _nfs42_proc_copy(struct file *src,
return status;
}
+ if ((!res->synchronous || !args->sync) &&
+ res->write_res.verifier.committed != NFS_FILE_SYNC) {
+ status = process_copy_commit(dst, pos_dst, res);
+ if (status)
+ return status;
+ }
+
truncate_pagecache_range(dst_inode, pos_dst,
pos_dst + res->write_res.count);
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index a417aaaeee4a..e87d414c40d0 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -508,7 +508,7 @@ extern int nfs4_sequence_done(struct rpc_task *task,
struct nfs4_sequence_res *res);
extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp);
-
+extern int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res);
extern const nfs4_stateid zero_stateid;
extern const nfs4_stateid invalid_stateid;
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index f9a70aaf13da..df5d3227f13b 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5137,6 +5137,40 @@ static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_mess
nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_COMMIT, clnt, msg);
}
+static int _nfs4_proc_commit(struct file *dst, struct nfs_commitargs *args,
+ struct nfs_commitres *res)
+{
+ struct inode *dst_inode = file_inode(dst);
+ struct nfs_server *server = NFS_SERVER(dst_inode);
+ struct rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
+ .rpc_argp = args,
+ .rpc_resp = res,
+ };
+
+ args->fh = NFS_FH(dst_inode);
+ return nfs4_call_sync(server->client, server, &msg,
+ &args->seq_args, &res->seq_res, 1);
+}
+
+int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res)
+{
+ struct nfs_commitargs args = {
+ .offset = offset,
+ .count = count,
+ };
+ struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
+ struct nfs4_exception exception = { };
+ int status;
+
+ do {
+ status = _nfs4_proc_commit(dst, &args, res);
+ status = nfs4_handle_exception(dst_server, status, &exception);
+ } while (exception.retry);
+
+ return status;
+}
+
struct nfs4_renewdata {
struct nfs_client *client;
unsigned long timestamp;