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pnfs: save layoutcommit cred at layout header init

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No need to save it for every lseg.
No need to save it at every pnfs_set_layoutcommit.

[Needed in v3.0]
CC: Stable Tree <stable@kernel.org>
Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Peng Tao 2011-07-30 20:52:32 -04:00 committed by Trond Myklebust
parent acff588053
commit 9fa4075878
2 changed files with 12 additions and 11 deletions
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21
fs/nfs/pnfs.c
View File

@ -190,6 +190,7 @@ static void
pnfs_free_layout_hdr(struct pnfs_layout_hdr *lo)
{
struct pnfs_layoutdriver_type *ld = NFS_SERVER(lo->plh_inode)->pnfs_curr_ld;
put_rpccred(lo->plh_lc_cred);
return ld->alloc_layout_hdr ? ld->free_layout_hdr(lo) : kfree(lo);
}
@ -816,7 +817,9 @@ out:
}
static struct pnfs_layout_hdr *
alloc_init_layout_hdr(struct inode *ino, gfp_t gfp_flags)
alloc_init_layout_hdr(struct inode *ino,
struct nfs_open_context *ctx,
gfp_t gfp_flags)
{
struct pnfs_layout_hdr *lo;
@ -828,11 +831,14 @@ alloc_init_layout_hdr(struct inode *ino, gfp_t gfp_flags)
INIT_LIST_HEAD(&lo->plh_segs);
INIT_LIST_HEAD(&lo->plh_bulk_recall);
lo->plh_inode = ino;
lo->plh_lc_cred = get_rpccred(ctx->state->owner->so_cred);
return lo;
}
static struct pnfs_layout_hdr *
pnfs_find_alloc_layout(struct inode *ino, gfp_t gfp_flags)
pnfs_find_alloc_layout(struct inode *ino,
struct nfs_open_context *ctx,
gfp_t gfp_flags)
{
struct nfs_inode *nfsi = NFS_I(ino);
struct pnfs_layout_hdr *new = NULL;
@ -847,7 +853,7 @@ pnfs_find_alloc_layout(struct inode *ino, gfp_t gfp_flags)
return nfsi->layout;
}
spin_unlock(&ino->i_lock);
new = alloc_init_layout_hdr(ino, gfp_flags);
new = alloc_init_layout_hdr(ino, ctx, gfp_flags);
spin_lock(&ino->i_lock);
if (likely(nfsi->layout == NULL)) /* Won the race? */
@ -940,7 +946,7 @@ pnfs_update_layout(struct inode *ino,
if (!pnfs_enabled_sb(NFS_SERVER(ino)))
return NULL;
spin_lock(&ino->i_lock);
lo = pnfs_find_alloc_layout(ino, gfp_flags);
lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);
if (lo == NULL) {
dprintk("%s ERROR: can't get pnfs_layout_hdr\n", __func__);
goto out_unlock;
@ -1373,8 +1379,6 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata)
if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
/* references matched in nfs4_layoutcommit_release */
get_lseg(wdata->lseg);
wdata->lseg->pls_lc_cred =
get_rpccred(wdata->args.context->state->owner->so_cred);
mark_as_dirty = true;
dprintk("%s: Set layoutcommit for inode %lu ",
__func__, wdata->inode->i_ino);
@ -1406,7 +1410,6 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
struct nfs4_layoutcommit_data *data;
struct nfs_inode *nfsi = NFS_I(inode);
struct pnfs_layout_segment *lseg;
struct rpc_cred *cred;
loff_t end_pos;
int status = 0;
@ -1436,9 +1439,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
lseg = pnfs_list_write_lseg(inode);
end_pos = nfsi->layout->plh_lwb;
cred = lseg->pls_lc_cred;
nfsi->layout->plh_lwb = 0;
lseg->pls_lc_cred = NULL;
memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data,
sizeof(nfsi->layout->plh_stateid.data));
@ -1446,7 +1447,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
data->args.inode = inode;
data->lseg = lseg;
data->cred = cred;
data->cred = get_rpccred(nfsi->layout->plh_lc_cred);
nfs_fattr_init(&data->fattr);
data->args.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
data->res.fattr = &data->fattr;

2
fs/nfs/pnfs.h
View File

@ -44,7 +44,6 @@ struct pnfs_layout_segment {
atomic_t pls_refcount;
unsigned long pls_flags;
struct pnfs_layout_hdr *pls_layout;
struct rpc_cred *pls_lc_cred; /* LAYOUTCOMMIT credential */
};
enum pnfs_try_status {
@ -125,6 +124,7 @@ struct pnfs_layout_hdr {
u32 plh_barrier; /* ignore lower seqids */
unsigned long plh_flags;
loff_t plh_lwb; /* last write byte for layoutcommit */
struct rpc_cred *plh_lc_cred; /* layoutcommit cred */
struct inode *plh_inode;
};