diff options
author | Peng Tao <tao.peng@primarydata.com> | 2015-12-05 02:03:17 +0800 |
---|---|---|
committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-12-28 14:32:37 -0500 |
commit | 2bff2288579f1e4af2f05a7f7443c85b7766d5ac (patch) | |
tree | 1cca8e446029d3acc42b0e0e858ae4b17c542617 /fs/nfs/pagelist.c | |
parent | c18b96a1b8629db8cf5ac9f8974ccb4abcc209ab (diff) | |
download | linux-2bff2288579f1e4af2f05a7f7443c85b7766d5ac.tar.bz2 |
nfs: centralize pgio error cleanup
In case we fail during setting things up for read/write IO, set
pg_error in IO descriptor and do the cleanup in nfs_pageio_add_request,
where we clean up all pages that are still hanging around on the IO
descriptor.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs/pagelist.c')
-rw-r--r-- | fs/nfs/pagelist.c | 53 |
1 files changed, 29 insertions, 24 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 13faa303eb3b..7c71b71016b5 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -664,22 +664,11 @@ EXPORT_SYMBOL_GPL(nfs_initiate_pgio); * @desc: IO descriptor * @hdr: pageio header */ -static int nfs_pgio_error(struct nfs_pageio_descriptor *desc, - struct nfs_pgio_header *hdr) +static void nfs_pgio_error(struct nfs_pgio_header *hdr) { - struct nfs_pgio_mirror *mirror; - u32 midx; - set_bit(NFS_IOHDR_REDO, &hdr->flags); nfs_pgio_data_destroy(hdr); hdr->completion_ops->completion(hdr); - /* TODO: Make sure it's right to clean up all mirrors here - * and not just hdr->pgio_mirror_idx */ - for (midx = 0; midx < desc->pg_mirror_count; midx++) { - mirror = &desc->pg_mirrors[midx]; - desc->pg_completion_ops->error_cleanup(&mirror->pg_list); - } - return -ENOMEM; } /** @@ -800,8 +789,11 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, unsigned int pagecount, pageused; pagecount = nfs_page_array_len(mirror->pg_base, mirror->pg_count); - if (!nfs_pgarray_set(&hdr->page_array, pagecount)) - return nfs_pgio_error(desc, hdr); + if (!nfs_pgarray_set(&hdr->page_array, pagecount)) { + nfs_pgio_error(hdr); + desc->pg_error = -ENOMEM; + return desc->pg_error; + } nfs_init_cinfo(&cinfo, desc->pg_inode, desc->pg_dreq); pages = hdr->page_array.pagevec; @@ -819,8 +811,11 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, *pages++ = last_page = req->wb_page; } } - if (WARN_ON_ONCE(pageused != pagecount)) - return nfs_pgio_error(desc, hdr); + if (WARN_ON_ONCE(pageused != pagecount)) { + nfs_pgio_error(hdr); + desc->pg_error = -EINVAL; + return desc->pg_error; + } if ((desc->pg_ioflags & FLUSH_COND_STABLE) && (desc->pg_moreio || nfs_reqs_to_commit(&cinfo))) @@ -843,10 +838,8 @@ static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc) hdr = nfs_pgio_header_alloc(desc->pg_rw_ops); if (!hdr) { - /* TODO: make sure this is right with mirroring - or - * should it back out all mirrors? */ - desc->pg_completion_ops->error_cleanup(&mirror->pg_list); - return -ENOMEM; + desc->pg_error = -ENOMEM; + return desc->pg_error; } nfs_pgheader_init(desc, hdr, nfs_pgio_header_free); ret = nfs_generic_pgio(desc, hdr); @@ -1126,7 +1119,6 @@ static int nfs_do_recoalesce(struct nfs_pageio_descriptor *desc) static int nfs_pageio_add_request_mirror(struct nfs_pageio_descriptor *desc, struct nfs_page *req) { - struct nfs_pgio_mirror *mirror = nfs_pgio_current_mirror(desc); int ret; do { @@ -1193,10 +1185,23 @@ int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc, out_failed: /* * We might have failed before sending any reqs over wire. - * clean up rest of the reqs in mirror pg_list + * Clean up rest of the reqs in mirror pg_list. */ - if (desc->pg_error) - desc->pg_completion_ops->error_cleanup(&mirror->pg_list); + if (desc->pg_error) { + struct nfs_pgio_mirror *mirror; + void (*func)(struct list_head *); + + /* remember fatal errors */ + if (nfs_error_is_fatal(desc->pg_error)) + mapping_set_error(desc->pg_inode->i_mapping, + desc->pg_error); + + func = desc->pg_completion_ops->error_cleanup; + for (midx = 0; midx < desc->pg_mirror_count; midx++) { + mirror = &desc->pg_mirrors[midx]; + func(&mirror->pg_list); + } + } return 0; } |