diff options
| -rw-r--r-- | fs/nfs/nfs4filelayout.c | 12 | ||||
| -rw-r--r-- | fs/nfs/pagelist.c | 4 | ||||
| -rw-r--r-- | fs/nfs/pnfs.c | 8 |
3 files changed, 22 insertions, 2 deletions
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 02d8170..e40523f 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -796,6 +796,16 @@ filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, { BUG_ON(pgio->pg_lseg != NULL); + if (req->wb_offset != req->wb_pgbase) { + /* + * Handling unaligned pages is difficult, because have to + * somehow split a req in two in certain cases in the + * pg.test code. Avoid this by just not using pnfs + * in this case. + */ + nfs_pageio_reset_read_mds(pgio); + return; + } pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, req->wb_context, 0, @@ -815,6 +825,8 @@ filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio, BUG_ON(pgio->pg_lseg != NULL); + if (req->wb_offset != req->wb_pgbase) + goto out_mds; pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, req->wb_context, 0, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 5d01a16..638ca7f 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -280,12 +280,12 @@ static bool nfs_can_coalesce_requests(struct nfs_page *prev, return false; if (req->wb_context->state != prev->wb_context->state) return false; - if (req->wb_index != (prev->wb_index + 1)) - return false; if (req->wb_pgbase != 0) return false; if (prev->wb_pgbase + prev->wb_bytes != PAGE_CACHE_SIZE) return false; + if (req_offset(req) != req_offset(prev) + prev->wb_bytes) + return false; return pgio->pg_ops->pg_test(pgio, prev, req); } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index b3a0c01..4da05e4 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1082,6 +1082,10 @@ pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *r { BUG_ON(pgio->pg_lseg != NULL); + if (req->wb_offset != req->wb_pgbase) { + nfs_pageio_reset_read_mds(pgio); + return; + } pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, req->wb_context, req_offset(req), @@ -1100,6 +1104,10 @@ pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page * { BUG_ON(pgio->pg_lseg != NULL); + if (req->wb_offset != req->wb_pgbase) { + nfs_pageio_reset_write_mds(pgio); + return; + } pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, req->wb_context, req_offset(req), |