summaryrefslogtreecommitdiffstats
path: root/fs/nfs
diff options
context:
space:
mode:
authorTrond Myklebust <trond.myklebust@hammerspace.com>2020-09-18 15:29:58 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2020-09-21 11:57:26 -0400
commitc0a1d129d3e01751d410343cb8e4a694716ca825 (patch)
tree24ae0bcbeabf7c8df9eddc7185f664de43e33bf7 /fs/nfs
parent68274f97aeb6ebcd74c391ddbff0b517b9b0ca0f (diff)
downloadlinux-c0a1d129d3e01751d410343cb8e4a694716ca825.tar.bz2
pNFS/flexfiles: Ensure we initialise the mirror bsizes correctly on read
While it is true that reading from an unmirrored source always uses index 0, that is no longer true for mirrored sources when we fail over. Fixes: 563c53e73b8b ("NFS: Fix flexfiles read failover") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayout.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index ff8965d1a4d4..1edeebd51937 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -838,6 +838,7 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
struct nfs4_ff_layout_mirror *mirror;
struct nfs4_pnfs_ds *ds;
int ds_idx;
+ u32 i;
retry:
ff_layout_pg_check_layout(pgio, req);
@@ -863,14 +864,14 @@ retry:
goto retry;
}
- mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx);
+ for (i = 0; i < pgio->pg_mirror_count; i++) {
+ mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i);
+ pgm = &pgio->pg_mirrors[i];
+ pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize;
+ }
pgio->pg_mirror_idx = ds_idx;
- /* read always uses only one mirror - idx 0 for pgio layer */
- pgm = &pgio->pg_mirrors[0];
- pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize;
-
if (NFS_SERVER(pgio->pg_inode)->flags &
(NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR))
pgio->pg_maxretrans = io_maxretrans;