Track lwb in nfs_commit_data so that we can use it to setup
layoutcommit in commit_done callback.
Signed-off-by: Peng Tao <[email protected]>
---
fs/nfs/pnfs.c | 29 +++++++++++++++++++++++++++++
fs/nfs/pnfs.h | 1 +
fs/nfs/write.c | 15 +++++++++++++++
include/linux/nfs_xdr.h | 1 +
4 files changed, 46 insertions(+)
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 4e85315..f36aeef 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1797,6 +1797,35 @@ pnfs_set_layoutcommit(struct nfs_pgio_header *hdr)
}
EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit);
+void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data)
+{
+ struct inode *inode = data->inode;
+ struct nfs_inode *nfsi = NFS_I(inode);
+ bool mark_as_dirty = false;
+
+ spin_lock(&inode->i_lock);
+ if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
+ mark_as_dirty = true;
+ dprintk("%s: Set layoutcommit for inode %lu ",
+ __func__, inode->i_ino);
+ }
+ if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &data->lseg->pls_flags)) {
+ /* references matched in nfs4_layoutcommit_release */
+ pnfs_get_lseg(data->lseg);
+ }
+ if (data->lwb > nfsi->layout->plh_lwb)
+ nfsi->layout->plh_lwb = data->lwb;
+ spin_unlock(&inode->i_lock);
+ dprintk("%s: lseg %p end_pos %llu\n",
+ __func__, data->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 */
+ if (mark_as_dirty)
+ mark_inode_dirty_sync(inode);
+}
+EXPORT_SYMBOL_GPL(pnfs_commit_set_layoutcommit);
+
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data)
{
struct nfs_server *nfss = NFS_SERVER(data->args.inode);
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index aca3dff..79c6311 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -219,6 +219,7 @@ void pnfs_roc_release(struct inode *ino);
void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task);
void pnfs_set_layoutcommit(struct nfs_pgio_header *);
+void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data);
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
int _pnfs_return_layout(struct inode *);
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 1065de2..79c1d6b 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1525,6 +1525,18 @@ int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data,
}
EXPORT_SYMBOL_GPL(nfs_initiate_commit);
+static loff_t nfs_get_lwb(struct list_head *head)
+{
+ loff_t lwb = 0;
+ struct nfs_page *req;
+
+ list_for_each_entry(req, head, wb_list)
+ if (lwb < (req_offset(req) + req->wb_bytes))
+ lwb = req_offset(req) + req->wb_bytes;
+
+ return lwb;
+}
+
/*
* Set up the argument/result storage required for the RPC call.
*/
@@ -1544,6 +1556,9 @@ void nfs_init_commit(struct nfs_commit_data *data,
data->inode = inode;
data->cred = first->wb_context->cred;
data->lseg = lseg; /* reference transferred */
+ /* only set lwb for pnfs commit */
+ if (lseg)
+ data->lwb = nfs_get_lwb(&data->pages);
data->mds_ops = &nfs_commit_ops;
data->completion_ops = cinfo->completion_ops;
data->dreq = cinfo->dreq;
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 0040629..e563b2c 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1328,6 +1328,7 @@ struct nfs_commit_data {
struct pnfs_layout_segment *lseg;
struct nfs_client *ds_clp; /* pNFS data server */
int ds_commit_index;
+ loff_t lwb;
const struct rpc_call_ops *mds_ops;
const struct nfs_commit_completion_ops *completion_ops;
int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
--
1.9.1
Following http://www.rfc-editor.org/errata_search.php?rfc=5661&eid=2751
Don't set layoutcommit for commit_through_mds case.
For FILE_SYNC writes, don't set layoutcommit.
For DATA_SYNC wirtes, set layout commit right after wirtes done.
For UNSTABLE writes, set layout commit when commit done.
Signed-off-by: Peng Tao <[email protected]>
---
fs/nfs/filelayout/filelayout.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c
index 1359c4a..e8720ec 100644
--- a/fs/nfs/filelayout/filelayout.c
+++ b/fs/nfs/filelayout/filelayout.c
@@ -265,7 +265,7 @@ filelayout_set_layoutcommit(struct nfs_pgio_header *hdr)
{
if (FILELAYOUT_LSEG(hdr->lseg)->commit_through_mds ||
- hdr->res.verf->committed == NFS_FILE_SYNC)
+ hdr->res.verf->committed != NFS_DATA_SYNC)
return;
pnfs_set_layoutcommit(hdr);
@@ -403,6 +403,9 @@ static int filelayout_commit_done_cb(struct rpc_task *task,
return -EAGAIN;
}
+ if (data->verf.committed == NFS_UNSTABLE)
+ pnfs_commit_set_layoutcommit(data);
+
return 0;
}
--
1.9.1