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NFS: Pass error information to the pgio error cleanup routine 

Allow the caller to pass error information when cleaning up a failed
I/O request so that we can conditionally take action to cancel the
request altogether if the error turned out to be fatal.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Trond Myklebust 2019-02-13 10:39:39 -05:00
parent 078b5fd92c
commit df3accb849
5 changed files with 16 additions and 8 deletions
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4
fs/nfs/direct.c
View File

@ -428,7 +428,7 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}
static void nfs_read_sync_pgio_error(struct list_head *head)
static void nfs_read_sync_pgio_error(struct list_head *head, int error)
{
struct nfs_page *req;
@ -820,7 +820,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}
static void nfs_write_sync_pgio_error(struct list_head *head)
static void nfs_write_sync_pgio_error(struct list_head *head, int error)
{
struct nfs_page *req;

5
fs/nfs/pagelist.c
View File

@ -993,7 +993,7 @@ nfs_pageio_cleanup_request(struct nfs_pageio_descriptor *desc,
LIST_HEAD(head);
nfs_list_move_request(req, &head);
desc->pg_completion_ops->error_cleanup(&head);
desc->pg_completion_ops->error_cleanup(&head, desc->pg_error);
}
/**
@ -1129,7 +1129,8 @@ static void nfs_pageio_error_cleanup(struct nfs_pageio_descriptor *desc)
for (midx = 0; midx < desc->pg_mirror_count; midx++) {
mirror = &desc->pg_mirrors[midx];
desc->pg_completion_ops->error_cleanup(&mirror->pg_list);
desc->pg_completion_ops->error_cleanup(&mirror->pg_list,
desc->pg_error);
}
}

2
fs/nfs/read.c
View File

@ -205,7 +205,7 @@ static void nfs_initiate_read(struct nfs_pgio_header *hdr,
}
static void
nfs_async_read_error(struct list_head *head)
nfs_async_read_error(struct list_head *head, int error)
{
struct nfs_page *req;

11
fs/nfs/write.c
View File

@ -1412,20 +1412,27 @@ static void nfs_redirty_request(struct nfs_page *req)
nfs_release_request(req);
}
static void nfs_async_write_error(struct list_head *head)
static void nfs_async_write_error(struct list_head *head, int error)
{
struct nfs_page *req;
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
if (nfs_error_is_fatal(error)) {
nfs_context_set_write_error(req->wb_context, error);
if (nfs_error_is_fatal_on_server(error)) {
nfs_write_error_remove_page(req);
continue;
}
}
nfs_redirty_request(req);
}
}
static void nfs_async_write_reschedule_io(struct nfs_pgio_header *hdr)
{
nfs_async_write_error(&hdr->pages);
nfs_async_write_error(&hdr->pages, 0);
filemap_fdatawrite_range(hdr->inode->i_mapping, hdr->args.offset,
hdr->args.offset + hdr->args.count - 1);
}

2
include/linux/nfs_xdr.h
View File

@ -1549,7 +1549,7 @@ struct nfs_commit_data {
};
struct nfs_pgio_completion_ops {
void (*error_cleanup)(struct list_head *head);
void (*error_cleanup)(struct list_head *head, int);
void (*init_hdr)(struct nfs_pgio_header *hdr);
void (*completion)(struct nfs_pgio_header *hdr);
void (*reschedule_io)(struct nfs_pgio_header *hdr);