From fdbd1a2e4a71adcb1ae219fcfd964930d77a7f84 Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Thu, 18 Oct 2018 15:01:48 -0400 Subject: 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 Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/pagelist.c | 40 +++++++++++++++++++++------------------- 1 file changed, 21 insertions(+), 19 deletions(-) (limited to 'fs/nfs') 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); -- cgit v1.2.3