diff options
| author | Benjamin Coddington <ben.coddington@hammerspace.com> | 2026-09-15 08:22:11 -0400 |
|---|---|---|
| committer | Anna Schumaker <anna.schumaker@hammerspace.com> | 2026-10-05 09:46:43 -0400 |
| commit | 9be31883a2e59a68478e656433445a3a82ad48fb (patch) | |
| tree | bc5156603c168d29ae11c4dbb253d1fe4b2313e7 /include/linux | |
| parent | e85acae4cda89c075bc94520fdcf5901595fffae (diff) | |
NFSv4/flexfiles: Carry the device node reference across each I/O
Rather than dropping the device node reference when DS setup completes,
transfer it to the in-flight I/O: carry it on nfs_pgio_header and
nfs_commit_data as ds_dev, and release it when the header or commit
data is released, alongside the lseg reference.
Convert the completion paths to use the carried node instead of
re-reading the mirror's pinned pointer: DS error tracking, marking the
deviceid available/unavailable, and deleting the deviceid on connection
errors now act on the node the I/O was actually sent to. Once a CHANGE
notification can re-point the pinned pointer mid-flight, this keeps
error attribution on the old device rather than its replacement (and
removes a NULL dereference had the pointer been reset to NULL).
FF_LAYOUT_DEVID_NODE() is now unused; remove it.
Assisted-by: Claude:claude-fable-5
Signed-off-by: Benjamin Coddington <bcodding@hammerspace.com>
Signed-off-by: Anna Schumaker <anna.schumaker@hammerspace.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/nfs_xdr.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index 7ed8fdb930d6..c0e29b4dfa62 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1693,6 +1693,7 @@ struct nfs_pgio_header { struct nfs_client *ds_clp; /* pNFS data server */ u32 ds_commit_idx; /* ds index if ds_clp is set */ u32 pgio_mirror_idx;/* mirror index in pgio layer */ + struct nfs4_deviceid_node *ds_dev; /* device node ref held across the I/O */ }; struct nfs_mds_commit_info { @@ -1731,6 +1732,7 @@ struct nfs_commit_data { struct nfs_open_context *context; struct pnfs_layout_segment *lseg; struct nfs_client *ds_clp; /* pNFS data server */ + struct nfs4_deviceid_node *ds_dev; /* device node ref held across the commit */ int ds_commit_index; loff_t lwb; const struct rpc_call_ops *mds_ops; |