diff options
| author | Weston Andros Adamson <dros@primarydata.com> | 2015-01-30 19:01:02 +0300 |
|---|---|---|
| committer | Tom Haynes <loghyr@primarydata.com> | 2015-02-03 22:06:54 +0300 |
| commit | 7c13789e3e6c66dbcaade1760087429240eb3d27 (patch) | |
| tree | 3d546df6c9feb8e79fc9e9575343d47e879ee507 | |
| parent | cb5d04bc39e914124e811ea55f3034d2379a5f6c (diff) | |
| download | linux-7c13789e3e6c66dbcaade1760087429240eb3d27.tar.xz | |
pnfs: lookup new lseg at lseg boundary
Before mirroring support was added, the pageio descriptor's pg_lseg was
set to null when an RPC was sent. Because of this, pg_init was called
at lseg boundaries with pg_lseg = NULL, and it could be set to the new
lseg.
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
| -rw-r--r-- | fs/nfs/pnfs.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index c7be9b997f5e..9304984bde80 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1788,10 +1788,16 @@ pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, seg_end = end_offset(pgio->pg_lseg->pls_range.offset, pgio->pg_lseg->pls_range.length); req_start = req_offset(req); - WARN_ON_ONCE(req_start > seg_end); + WARN_ON_ONCE(req_start >= seg_end); /* start of request is past the last byte of this segment */ - if (req_start >= seg_end) + if (req_start >= seg_end) { + /* reference the new lseg */ + if (pgio->pg_ops->pg_cleanup) + pgio->pg_ops->pg_cleanup(pgio); + if (pgio->pg_ops->pg_init) + pgio->pg_ops->pg_init(pgio, req); return 0; + } /* adjust 'size' iff there are fewer bytes left in the * segment than what nfs_generic_pg_test returned */ |