diff options
Diffstat (limited to 'fs/cifs/file.c')
| -rw-r--r-- | fs/cifs/file.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/fs/cifs/file.c b/fs/cifs/file.c index c9c4f5ac3c78..c79bdf3e6f51 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1670,8 +1670,8 @@ cifs_write(struct cifsFileInfo *open_file, __u32 pid, const char *write_data, break; } - len = min((size_t)cifs_sb->wsize, - write_size - total_written); + len = min(server->ops->wp_retry_size(dentry->d_inode), + (unsigned int)write_size - total_written); /* iov[0] is reserved for smb header */ iov[1].iov_base = (char *)write_data + total_written; iov[1].iov_len = len; @@ -2031,6 +2031,7 @@ static int cifs_writepages(struct address_space *mapping, struct writeback_control *wbc) { struct cifs_sb_info *cifs_sb = CIFS_SB(mapping->host->i_sb); + struct TCP_Server_Info *server; bool done = false, scanned = false, range_whole = false; pgoff_t end, index; struct cifs_writedata *wdata; @@ -2053,23 +2054,30 @@ static int cifs_writepages(struct address_space *mapping, range_whole = true; scanned = true; } + server = cifs_sb_master_tcon(cifs_sb)->ses->server; retry: while (!done && index <= end) { - unsigned int i, nr_pages, found_pages; + unsigned int i, nr_pages, found_pages, wsize, credits; pgoff_t next = 0, tofind, saved_index = index; - tofind = min((cifs_sb->wsize / PAGE_CACHE_SIZE) - 1, - end - index) + 1; + rc = server->ops->wait_mtu_credits(server, cifs_sb->wsize, + &wsize, &credits); + if (rc) + break; + + tofind = min((wsize / PAGE_CACHE_SIZE) - 1, end - index) + 1; wdata = wdata_alloc_and_fillpages(tofind, mapping, end, &index, &found_pages); if (!wdata) { rc = -ENOMEM; + add_credits_and_wake_if(server, credits, 0); break; } if (found_pages == 0) { kref_put(&wdata->refcount, cifs_writedata_release); + add_credits_and_wake_if(server, credits, 0); break; } @@ -2079,13 +2087,17 @@ retry: /* nothing to write? */ if (nr_pages == 0) { kref_put(&wdata->refcount, cifs_writedata_release); + add_credits_and_wake_if(server, credits, 0); continue; } + wdata->credits = credits; + rc = wdata_send_pages(wdata, nr_pages, mapping, wbc); /* send failure -- clean up the mess */ if (rc != 0) { + add_credits_and_wake_if(server, wdata->credits, 0); for (i = 0; i < nr_pages; ++i) { if (rc == -EAGAIN) redirty_page_for_writepage(wbc, @@ -2466,17 +2478,26 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, memcpy(&saved_from, from, sizeof(struct iov_iter)); do { - nr_pages = get_numpages(cifs_sb->wsize, len, &cur_len); + unsigned int wsize, credits; + + rc = server->ops->wait_mtu_credits(server, cifs_sb->wsize, + &wsize, &credits); + if (rc) + break; + + nr_pages = get_numpages(wsize, len, &cur_len); wdata = cifs_writedata_alloc(nr_pages, cifs_uncached_writev_complete); if (!wdata) { rc = -ENOMEM; + add_credits_and_wake_if(server, credits, 0); break; } rc = cifs_write_allocate_pages(wdata->pages, nr_pages); if (rc) { kfree(wdata); + add_credits_and_wake_if(server, credits, 0); break; } @@ -2486,6 +2507,7 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, for (i = 0; i < nr_pages; i++) put_page(wdata->pages[i]); kfree(wdata); + add_credits_and_wake_if(server, credits, 0); break; } @@ -2504,12 +2526,14 @@ cifs_write_from_iter(loff_t offset, size_t len, struct iov_iter *from, wdata->bytes = cur_len; wdata->pagesz = PAGE_SIZE; wdata->tailsz = cur_len - ((nr_pages - 1) * PAGE_SIZE); + wdata->credits = credits; if (!wdata->cfile->invalidHandle || !cifs_reopen_file(wdata->cfile, false)) rc = server->ops->async_writev(wdata, cifs_uncached_writedata_release); if (rc) { + add_credits_and_wake_if(server, wdata->credits, 0); kref_put(&wdata->refcount, cifs_uncached_writedata_release); if (rc == -EAGAIN) { |