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NFSD: Shrink size of struct nfsd4_copy

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struct nfsd4_copy is part of struct nfsd4_op, which resides in an
8-element array.

sizeof(struct nfsd4_op):
Before: /* size: 1696, cachelines: 27, members: 5 */
After:  /* size: 672, cachelines: 11, members: 5 */

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2022-07-27 14:40:22 -04:00
parent 09426ef2a6
commit 87689df694
3 changed files with 11 additions and 4 deletions
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8
fs/nfsd/nfs4proc.c
View File

@ -1289,6 +1289,7 @@ void nfs4_put_copy(struct nfsd4_copy *copy)
{
if (!refcount_dec_and_test(&copy->refcount))
return;
kfree(copy->cp_src);
kfree(copy);
}
@ -1549,7 +1550,7 @@ nfsd4_setup_inter_ssc(struct svc_rqst *rqstp,
if (status)
goto out;
status = nfsd4_interssc_connect(&copy->cp_src, rqstp, mount);
status = nfsd4_interssc_connect(copy->cp_src, rqstp, mount);
if (status)
goto out;
@ -1761,7 +1762,7 @@ static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst)
dst->nf_src = nfsd_file_get(src->nf_src);
memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid));
memcpy(&dst->cp_src, &src->cp_src, sizeof(struct nl4_server));
memcpy(dst->cp_src, src->cp_src, sizeof(struct nl4_server));
memcpy(&dst->stateid, &src->stateid, sizeof(src->stateid));
memcpy(&dst->c_fh, &src->c_fh, sizeof(src->c_fh));
dst->ss_mnt = src->ss_mnt;
@ -1855,6 +1856,9 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
async_copy = kzalloc(sizeof(struct nfsd4_copy), GFP_KERNEL);
if (!async_copy)
goto out_err;
async_copy->cp_src = kmalloc(sizeof(*async_copy->cp_src), GFP_KERNEL);
if (!async_copy->cp_src)
goto out_err;
if (!nfs4_init_copy_state(nn, copy))
goto out_err;
refcount_set(&async_copy->refcount, 1);

5
fs/nfsd/nfs4xdr.c
View File

@ -1920,6 +1920,9 @@ nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy)
if (xdr_stream_decode_u32(argp->xdr, &count) < 0)
return nfserr_bad_xdr;
copy->cp_src = svcxdr_tmpalloc(argp, sizeof(*copy->cp_src));
if (copy->cp_src == NULL)
return nfserr_jukebox;
copy->cp_intra = false;
if (count == 0) { /* intra-server copy */
copy->cp_intra = true;
@ -1927,7 +1930,7 @@ nfsd4_decode_copy(struct nfsd4_compoundargs *argp, struct nfsd4_copy *copy)
}
/* decode all the supplied server addresses but use only the first */
status = nfsd4_decode_nl4_server(argp, &copy->cp_src);
status = nfsd4_decode_nl4_server(argp, copy->cp_src);
if (status)
return status;

2
fs/nfsd/xdr4.h
View File

@ -540,7 +540,7 @@ struct nfsd4_copy {
u64 cp_src_pos;
u64 cp_dst_pos;
u64 cp_count;
struct nl4_server cp_src;
struct nl4_server *cp_src;
bool cp_intra;
/* both */