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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2023-09-09 19:16:53 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2023-10-22 19:47:56 -0400 |
| commit | 6e7434abcd07e8beb67fdc4af6207ae0490d5274 (patch) | |
| tree | d3ffd4948d10eb8b97bccb58b22c5651c2614f99 /fs/nfs/pnfs.c | |
| parent | 5b9d31ae1c925bb5f15975e31b31ff5ae3c81f8f (diff) | |
| download | lwn-6e7434abcd07e8beb67fdc4af6207ae0490d5274.tar.gz lwn-6e7434abcd07e8beb67fdc4af6207ae0490d5274.zip | |
NFSv4/pnfs: Allow layoutget to return EAGAIN for softerr mounts
If we're using the 'softerr' mount option, we may want to allow
layoutget to return EAGAIN to allow knfsd server threads to return a
JUKEBOX/DELAY error to the client instead of busy waiting.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/pnfs.c')
| -rw-r--r-- | fs/nfs/pnfs.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 84343aefbbd6..21a365357629 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1980,7 +1980,9 @@ pnfs_update_layout(struct inode *ino, struct pnfs_layout_segment *lseg = NULL; struct nfs4_layoutget *lgp; nfs4_stateid stateid; - long timeout = 0; + struct nfs4_exception exception = { + .inode = ino, + }; unsigned long giveup = jiffies + (clp->cl_lease_time << 1); bool first; @@ -2144,7 +2146,7 @@ lookup_again: lgp->lo = lo; pnfs_get_layout_hdr(lo); - lseg = nfs4_proc_layoutget(lgp, &timeout); + lseg = nfs4_proc_layoutget(lgp, &exception); trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg, PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET); nfs_layoutget_end(lo); @@ -2171,6 +2173,8 @@ lookup_again: goto out_put_layout_hdr; } if (lseg) { + if (!exception.retry) + goto out_put_layout_hdr; if (first) pnfs_clear_first_layoutget(lo); trace_pnfs_update_layout(ino, pos, count, |