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NFS: Allow setting rsize / wsize to a multiple of PAGE_SIZE

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Previously, we required this to value to be a power of 2 for UDP related
reasons. This patch keeps the power of 2 rule for UDP but allows more
flexibility for TCP and RDMA.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Anna Schumaker 2022-06-17 16:23:36 -04:00 committed by Trond Myklebust
parent f1bafa7375
commit 940261a195
4 changed files with 31 additions and 10 deletions
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13
fs/nfs/client.c
View File

@ -708,9 +708,9 @@ static int nfs_init_server(struct nfs_server *server,
}
if (ctx->rsize)
server->rsize = nfs_block_size(ctx->rsize, NULL);
server->rsize = nfs_io_size(ctx->rsize, clp->cl_proto);
if (ctx->wsize)
server->wsize = nfs_block_size(ctx->wsize, NULL);
server->wsize = nfs_io_size(ctx->wsize, clp->cl_proto);
server->acregmin = ctx->acregmin * HZ;
server->acregmax = ctx->acregmax * HZ;
@ -755,18 +755,19 @@ error:
static void nfs_server_set_fsinfo(struct nfs_server *server,
struct nfs_fsinfo *fsinfo)
{
struct nfs_client *clp = server->nfs_client;
unsigned long max_rpc_payload, raw_max_rpc_payload;
/* Work out a lot of parameters */
if (server->rsize == 0)
server->rsize = nfs_block_size(fsinfo->rtpref, NULL);
server->rsize = nfs_io_size(fsinfo->rtpref, clp->cl_proto);
if (server->wsize == 0)
server->wsize = nfs_block_size(fsinfo->wtpref, NULL);
server->wsize = nfs_io_size(fsinfo->wtpref, clp->cl_proto);
if (fsinfo->rtmax >= 512 && server->rsize > fsinfo->rtmax)
server->rsize = nfs_block_size(fsinfo->rtmax, NULL);
server->rsize = nfs_io_size(fsinfo->rtmax, clp->cl_proto);
if (fsinfo->wtmax >= 512 && server->wsize > fsinfo->wtmax)
server->wsize = nfs_block_size(fsinfo->wtmax, NULL);
server->wsize = nfs_io_size(fsinfo->wtmax, clp->cl_proto);
raw_max_rpc_payload = rpc_max_payload(server->client);
max_rpc_payload = nfs_block_size(raw_max_rpc_payload, NULL);

6
fs/nfs/flexfilelayout/flexfilelayoutdev.c
View File

@ -113,8 +113,10 @@ nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev,
goto out_err_drain_dsaddrs;
ds_versions[i].version = be32_to_cpup(p++);
ds_versions[i].minor_version = be32_to_cpup(p++);
ds_versions[i].rsize = nfs_block_size(be32_to_cpup(p++), NULL);
ds_versions[i].wsize = nfs_block_size(be32_to_cpup(p++), NULL);
ds_versions[i].rsize = nfs_io_size(be32_to_cpup(p++),
server->nfs_client->cl_proto);
ds_versions[i].wsize = nfs_io_size(be32_to_cpup(p++),
server->nfs_client->cl_proto);
ds_versions[i].tightly_coupled = be32_to_cpup(p);
if (ds_versions[i].rsize > NFS_MAX_FILE_IO_SIZE)

18
fs/nfs/internal.h
View File

@ -704,6 +704,24 @@ unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp)
return nfs_block_bits(bsize, nrbitsp);
}
/*
* Compute and set NFS server rsize / wsize
*/
static inline
unsigned long nfs_io_size(unsigned long iosize, enum xprt_transports proto)
{
if (iosize < NFS_MIN_FILE_IO_SIZE)
iosize = NFS_DEF_FILE_IO_SIZE;
else if (iosize >= NFS_MAX_FILE_IO_SIZE)
iosize = NFS_MAX_FILE_IO_SIZE;
else
iosize = iosize & PAGE_MASK;
if (proto == XPRT_TRANSPORT_UDP)
return nfs_block_bits(iosize, NULL);
return iosize;
}
/*
* Determine the maximum file size for a superblock
*/

4
fs/nfs/nfs4client.c
View File

@ -1161,9 +1161,9 @@ static int nfs4_init_server(struct nfs_server *server, struct fs_context *fc)
return error;
if (ctx->rsize)
server->rsize = nfs_block_size(ctx->rsize, NULL);
server->rsize = nfs_io_size(ctx->rsize, server->nfs_client->cl_proto);
if (ctx->wsize)
server->wsize = nfs_block_size(ctx->wsize, NULL);
server->wsize = nfs_io_size(ctx->wsize, server->nfs_client->cl_proto);
server->acregmin = ctx->acregmin * HZ;
server->acregmax = ctx->acregmax * HZ;