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| author |   Trond Myklebust <trond.myklebust@primarydata.com> | 2017-04-29 00:02:37 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-04-29 00:02:37 -0400 |
| commit | 37f8aa16da8e9239092429e7a6dadf352897a92d (patch) | |
| tree | 569e566fa369423f9067dc872ac1a5e90bbe2af7 /fs/nfs/pnfs.c | |
| parent | pNFS: Ensure we check layout validity before marking it for return (diff) | |
| download | linux-dev-37f8aa16da8e9239092429e7a6dadf352897a92d.tar.xz linux-dev-37f8aa16da8e9239092429e7a6dadf352897a92d.zip | |
pNFS/flexfiles: Fix up the ff_layout_write_pagelist failure path
If the attempt to write through pNFS fails, we need to use the same
failure semantics as for the read path: If the FF_FLAGS_NO_IO_THRU_MDS
flag is set or we have sufficient valid DSes, then we must retry through
pNFS
Fixes: d67ae825a59d ("pnfs/flexfiles: Add the FlexFile Layout Driver")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index e45b3ffeda08..6c2e4c73684c 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -2292,8 +2292,20 @@ pnfs_do_write(struct nfs_pageio_descriptor *desc, enum pnfs_try_status trypnfs; trypnfs = pnfs_try_to_write_data(hdr, call_ops, lseg, how); - if (trypnfs == PNFS_NOT_ATTEMPTED) + switch (trypnfs) { + case PNFS_NOT_ATTEMPTED: pnfs_write_through_mds(desc, hdr); + case PNFS_ATTEMPTED: + break; + case PNFS_TRY_AGAIN: + /* cleanup hdr and prepare to redo pnfs */ + if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { + struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); + list_splice_init(&hdr->pages, &mirror->pg_list); + mirror->pg_recoalesce = 1; + } + hdr->mds_ops->rpc_release(hdr); + } } static void pnfs_writehdr_free(struct nfs_pgio_header *hdr) |