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path: root/fs/nfs/pnfs.c
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Diffstat (limited to 'fs/nfs/pnfs.c')
-rw-r--r--fs/nfs/pnfs.c86
1 files changed, 54 insertions, 32 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 38e5508555c..e550e8836c3 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -76,8 +76,11 @@ find_pnfs_driver(u32 id)
void
unset_pnfs_layoutdriver(struct nfs_server *nfss)
{
- if (nfss->pnfs_curr_ld)
+ if (nfss->pnfs_curr_ld) {
+ if (nfss->pnfs_curr_ld->clear_layoutdriver)
+ nfss->pnfs_curr_ld->clear_layoutdriver(nfss);
module_put(nfss->pnfs_curr_ld->owner);
+ }
nfss->pnfs_curr_ld = NULL;
}
@@ -88,7 +91,8 @@ unset_pnfs_layoutdriver(struct nfs_server *nfss)
* @id layout type. Zero (illegal layout type) indicates pNFS not in use.
*/
void
-set_pnfs_layoutdriver(struct nfs_server *server, u32 id)
+set_pnfs_layoutdriver(struct nfs_server *server, const struct nfs_fh *mntfh,
+ u32 id)
{
struct pnfs_layoutdriver_type *ld_type = NULL;
@@ -115,6 +119,13 @@ set_pnfs_layoutdriver(struct nfs_server *server, u32 id)
goto out_no_driver;
}
server->pnfs_curr_ld = ld_type;
+ if (ld_type->set_layoutdriver
+ && ld_type->set_layoutdriver(server, mntfh)) {
+ printk(KERN_ERR "%s: Error initializing pNFS layout driver %u.\n",
+ __func__, id);
+ module_put(ld_type->owner);
+ goto out_no_driver;
+ }
dprintk("%s: pNFS module for %u set\n", __func__, id);
return;
@@ -190,6 +201,7 @@ 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);
}
@@ -224,6 +236,7 @@ static void
init_lseg(struct pnfs_layout_hdr *lo, struct pnfs_layout_segment *lseg)
{
INIT_LIST_HEAD(&lseg->pls_list);
+ INIT_LIST_HEAD(&lseg->pls_lc_list);
atomic_set(&lseg->pls_refcount, 1);
smp_mb();
set_bit(NFS_LSEG_VALID, &lseg->pls_flags);
@@ -816,7 +829,9 @@ 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 +843,14 @@ 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 +865,7 @@ 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 +958,7 @@ 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;
@@ -1350,16 +1368,17 @@ pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
EXPORT_SYMBOL_GPL(pnfs_generic_pg_readpages);
/*
- * Currently there is only one (whole file) write lseg.
+ * There can be multiple RW segments.
*/
-static struct pnfs_layout_segment *pnfs_list_write_lseg(struct inode *inode)
+static void pnfs_list_write_lseg(struct inode *inode, struct list_head *listp)
{
- struct pnfs_layout_segment *lseg, *rv = NULL;
+ struct pnfs_layout_segment *lseg;
- list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list)
- if (lseg->pls_range.iomode == IOMODE_RW)
- rv = lseg;
- return rv;
+ list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) {
+ if (lseg->pls_range.iomode == IOMODE_RW &&
+ test_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags))
+ list_add(&lseg->pls_lc_list, listp);
+ }
}
void
@@ -1371,17 +1390,19 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata)
spin_lock(&nfsi->vfs_inode.i_lock);
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);
}
- if (end_pos > wdata->lseg->pls_end_pos)
- wdata->lseg->pls_end_pos = end_pos;
+ if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &wdata->lseg->pls_flags)) {
+ /* references matched in nfs4_layoutcommit_release */
+ get_lseg(wdata->lseg);
+ }
+ if (end_pos > nfsi->layout->plh_lwb)
+ nfsi->layout->plh_lwb = end_pos;
spin_unlock(&nfsi->vfs_inode.i_lock);
+ dprintk("%s: lseg %p end_pos %llu\n",
+ __func__, wdata->lseg, nfsi->layout->plh_lwb);
/* if pnfs_layoutcommit_inode() runs between inode locks, the next one
* will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */
@@ -1390,6 +1411,14 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata)
}
EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit);
+void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data)
+{
+ struct nfs_server *nfss = NFS_SERVER(data->args.inode);
+
+ if (nfss->pnfs_curr_ld->cleanup_layoutcommit)
+ nfss->pnfs_curr_ld->cleanup_layoutcommit(data);
+}
+
/*
* For the LAYOUT4_NFSV4_1_FILES layout type, NFS_DATA_SYNC WRITEs and
* NFS_UNSTABLE WRITEs with a COMMIT to data servers must store enough
@@ -1403,8 +1432,6 @@ 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;
@@ -1421,30 +1448,25 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
goto out;
}
+ INIT_LIST_HEAD(&data->lseg_list);
spin_lock(&inode->i_lock);
if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
spin_unlock(&inode->i_lock);
kfree(data);
goto out;
}
- /*
- * Currently only one (whole file) write lseg which is referenced
- * in pnfs_set_layoutcommit and will be found.
- */
- lseg = pnfs_list_write_lseg(inode);
- end_pos = lseg->pls_end_pos;
- cred = lseg->pls_lc_cred;
- lseg->pls_end_pos = 0;
- lseg->pls_lc_cred = NULL;
+ pnfs_list_write_lseg(inode, &data->lseg_list);
+
+ end_pos = nfsi->layout->plh_lwb;
+ nfsi->layout->plh_lwb = 0;
memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data,
sizeof(nfsi->layout->plh_stateid.data));
spin_unlock(&inode->i_lock);
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;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-18 09:02:28 +0000