From 3e84469d0101456caceffc6b22218a49017fcd3f Mon Sep 17 00:00:00 2001 From: Steve French Date: Mon, 3 Oct 2005 13:37:24 -0700 Subject: [CIFS] Add writepages support to shrink memory usage on writes, eliminate the double copy, and improve cifs write performance and help the server by upping the typical write size from 4K to 16K (or even larger if wsize set explicitly) for servers which support this. Part 1 of 2 Signed-off-by: Dave Kleikamp Signed-off-by: Steve French --- fs/cifs/file.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'fs/cifs/file.c') diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 3766db2bb7f2..941108352547 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -849,13 +849,19 @@ static ssize_t cifs_write(struct file *file, const char *write_data, /* BB FIXME We can not sign across two buffers yet */ if((experimEnabled) && ((pTcon->ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) == 0)) { + struct kvec iov[2]; + unsigned int len; + + len = min(cifs_sb->wsize, + 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; rc = CIFSSMBWrite2(xid, pTcon, - open_file->netfid, - min_t(const int, cifs_sb->wsize, - write_size - total_written), + open_file->netfid, len, *poffset, &bytes_written, - write_data + total_written, - long_op); + iov, 1, long_op); } else /* BB FIXME fixup indentation of line below */ #endif -- cgit v1.2.3