diff options
| -rw-r--r-- | fs/cifs/file.c | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 7df4e46..bbc3859 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2828,26 +2828,6 @@ cifs_uncached_readdata_release(struct kref *refcount) cifs_readdata_release(refcount); } -static int -cifs_retry_async_readv(struct cifs_readdata *rdata) -{ - int rc; - struct TCP_Server_Info *server; - - server = tlink_tcon(rdata->cfile->tlink)->ses->server; - - do { - if (rdata->cfile->invalidHandle) { - rc = cifs_reopen_file(rdata->cfile, true); - if (rc != 0) - continue; - } - rc = server->ops->async_readv(rdata); - } while (rc == -EAGAIN); - - return rc; -} - /** * cifs_readdata_to_iov - copy data from pages in response to an iovec * @rdata: the readdata response with list of pages holding data @@ -2941,6 +2921,9 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file, size_t cur_len; int rc; pid_t pid; + struct TCP_Server_Info *server; + + server = tlink_tcon(open_file->tlink)->ses->server; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) pid = open_file->pid; @@ -2971,11 +2954,15 @@ cifs_send_async_read(loff_t offset, size_t len, struct cifsFileInfo *open_file, rdata->pagesz = PAGE_SIZE; rdata->read_into_pages = cifs_uncached_read_into_pages; - rc = cifs_retry_async_readv(rdata); + if (!rdata->cfile->invalidHandle || + !cifs_reopen_file(rdata->cfile, true)) + rc = server->ops->async_readv(rdata); error: if (rc) { kref_put(&rdata->refcount, cifs_uncached_readdata_release); + if (rc == -EAGAIN) + continue; break; } @@ -3023,8 +3010,8 @@ ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to) len = iov_iter_count(to); /* the loop below should proceed in the order of increasing offsets */ +again: list_for_each_entry_safe(rdata, tmp, &rdata_list, list) { - again: if (!rc) { /* FIXME: freezable sleep too? */ rc = wait_for_completion_killable(&rdata->done); @@ -3034,7 +3021,19 @@ ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to) rc = rdata->result; /* resend call if it's a retryable error */ if (rc == -EAGAIN) { - rc = cifs_retry_async_readv(rdata); + struct list_head tmp_list; + + list_del_init(&rdata->list); + INIT_LIST_HEAD(&tmp_list); + + rc = cifs_send_async_read(rdata->offset, + rdata->bytes, rdata->cfile, + cifs_sb, &tmp_list); + + list_splice(&tmp_list, &rdata_list); + + kref_put(&rdata->refcount, + cifs_uncached_readdata_release); goto again; } } else { |