[17/19] NFS/flexfile: Simplify nfs4_ff_layout_select_ds_stateid()
diff mbox series

Message ID 20190301192455.104943-18-trond.myklebust@hammerspace.com
State New
Headers show
Series
  • Updates for pNFS/flexfiles
Related show

Commit Message

Trond Myklebust March 1, 2019, 7:24 p.m. UTC
Pass in a pointer to the mirror rather than forcing another
array access.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfs/flexfilelayout/flexfilelayout.c    |  8 ++------
 fs/nfs/flexfilelayout/flexfilelayout.h    |  7 +++----
 fs/nfs/flexfilelayout/flexfilelayoutdev.c | 21 +++++----------------
 3 files changed, 10 insertions(+), 26 deletions(-)

Patch
diff mbox series

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 94515856b357..5db768924fba 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -1799,9 +1799,7 @@  ff_layout_read_pagelist(struct nfs_pgio_header *hdr)
 	if (fh)
 		hdr->args.fh = fh;
 
-	if (vers == 4 &&
-		!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
-		goto out_failed;
+	nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid);
 
 	/*
 	 * Note that if we ever decide to split across DSes,
@@ -1867,9 +1865,7 @@  ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
 	if (fh)
 		hdr->args.fh = fh;
 
-	if (vers == 4 &&
-		!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
-		goto out_failed;
+	nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid);
 
 	/*
 	 * Note that if we ever decide to split across DSes,
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h
index 99cfe2e8f32a..2f369966abf7 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.h
+++ b/fs/nfs/flexfilelayout/flexfilelayout.h
@@ -204,10 +204,9 @@  unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
 		unsigned int maxnum);
 struct nfs_fh *
 nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror);
-int
-nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
-				u32 mirror_idx,
-				nfs4_stateid *stateid);
+void
+nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,
+		nfs4_stateid *stateid);
 
 struct nfs4_pnfs_ds *
 nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg,
diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
index 691e8b87032b..9348a4588f55 100644
--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
@@ -357,23 +357,12 @@  nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror)
 	return &mirror->fh_versions[0];
 }
 
-int
-nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
-				u32 mirror_idx,
-				nfs4_stateid *stateid)
+void
+nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,
+		nfs4_stateid *stateid)
 {
-	struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx);
-
-	if (!ff_layout_mirror_valid(lseg, mirror, false)) {
-		pr_err_ratelimited("NFS: %s: No data server for mirror offset index %d\n",
-			__func__, mirror_idx);
-		goto out;
-	}
-
-	nfs4_stateid_copy(stateid, &mirror->stateid);
-	return 1;
-out:
-	return 0;
+	if (nfs4_ff_layout_ds_version(mirror) == 4)
+		nfs4_stateid_copy(stateid, &mirror->stateid);
 }
 
 /**