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authorBenjamin Coddington <bcodding@redhat.com>2018-10-18 22:01:48 +0300
committerTrond Myklebust <trond.myklebust@hammerspace.com>2018-10-19 00:20:57 +0300
commitfdbd1a2e4a71adcb1ae219fcfd964930d77a7f84 (patch)
tree728f68714faa6fddc69ea60e8ff8a9f61d3ed09c /fs/nfs/pagelist.c
parente732f4485a150492b286f3efc06f9b34dd6b9995 (diff)
downloadlinux-fdbd1a2e4a71adcb1ae219fcfd964930d77a7f84.tar.xz
nfs: Fix a missed page unlock after pg_doio()
We must check pg_error and call error_cleanup after any call to pg_doio. Currently, we are skipping the unlock of a page if we encounter an error in nfs_pageio_complete() before handing off the work to the RPC layer. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/pagelist.c')
-rw-r--r--fs/nfs/pagelist.c40
1 files changed, 21 insertions, 19 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index f97c455f5734..3b50edf6f883 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -1110,6 +1110,20 @@ static int nfs_pageio_add_request_mirror(struct nfs_pageio_descriptor *desc,
return ret;
}
+static void nfs_pageio_error_cleanup(struct nfs_pageio_descriptor *desc)
+{
+ u32 midx;
+ struct nfs_pgio_mirror *mirror;
+
+ if (!desc->pg_error)
+ return;
+
+ for (midx = 0; midx < desc->pg_mirror_count; midx++) {
+ mirror = &desc->pg_mirrors[midx];
+ desc->pg_completion_ops->error_cleanup(&mirror->pg_list);
+ }
+}
+
int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc,
struct nfs_page *req)
{
@@ -1160,25 +1174,11 @@ int nfs_pageio_add_request(struct nfs_pageio_descriptor *desc,
return 1;
out_failed:
- /*
- * We might have failed before sending any reqs over wire.
- * Clean up rest of the reqs in 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))
- nfs_context_set_write_error(req->wb_context,
- 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);
- }
- }
+ /* remember fatal errors */
+ if (nfs_error_is_fatal(desc->pg_error))
+ nfs_context_set_write_error(req->wb_context,
+ desc->pg_error);
+ nfs_pageio_error_cleanup(desc);
return 0;
}
@@ -1250,6 +1250,8 @@ void nfs_pageio_complete(struct nfs_pageio_descriptor *desc)
for (midx = 0; midx < desc->pg_mirror_count; midx++)
nfs_pageio_complete_mirror(desc, midx);
+ if (desc->pg_error < 0)
+ nfs_pageio_error_cleanup(desc);
if (desc->pg_ops->pg_cleanup)
desc->pg_ops->pg_cleanup(desc);
nfs_pageio_cleanup_mirroring(desc);