pNFS/flexfiles: Process writeback resends from nfsiod context as well

Although the writeback resends are more robust than the reads, since they
are not immediately rescheduled by the same thread, we are better off
processing them in the same place as the reads.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 336b4d560e2c52f90bdabf2fed0b1526c3dd61e3..1386b774ec95abbd9e163683b793555debd7c5bd 100644 (file)
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -1428,12 +1428,14 @@ static int ff_layout_write_done_cb(struct rpc_task *task,
                                           hdr->ds_clp, hdr->lseg,
                                           hdr->pgio_mirror_idx);
 
+       clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
+       clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags);
        switch (err) {
        case -NFS4ERR_RESET_TO_PNFS:
-               ff_layout_reset_write(hdr, true);
+               set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags);
                return task->tk_status;
        case -NFS4ERR_RESET_TO_MDS:
-               ff_layout_reset_write(hdr, false);
+               set_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags);
                return task->tk_status;
        case -EAGAIN:
                return -EAGAIN;
@@ -1580,6 +1582,10 @@ static void ff_layout_write_release(void *data)
        struct nfs_pgio_header *hdr = data;
 
        ff_layout_write_record_layoutstats_done(&hdr->task, hdr);
+       if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags))
+               ff_layout_reset_write(hdr, true);
+       else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags))
+               ff_layout_reset_write(hdr, false);
        pnfs_generic_rw_release(data);
 }