Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-pb0-f46.google.com ([209.85.160.46]:65416 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754699Ab2HHCDa (ORCPT ); Tue, 7 Aug 2012 22:03:30 -0400 Received: by mail-pb0-f46.google.com with SMTP id rr13so617318pbb.19 for ; Tue, 07 Aug 2012 19:03:30 -0700 (PDT) From: Peng Tao To: bharrosh@panasas.com Cc: linux-nfs@vger.kernel.org, Peng Tao Subject: [PATCH RFC 1/3] NFS: track direct IO left bytes Date: Wed, 8 Aug 2012 10:03:10 +0800 Message-Id: <1344391392-1948-2-git-send-email-bergwolf@gmail.com> In-Reply-To: <1344391392-1948-1-git-send-email-bergwolf@gmail.com> References: <1344391392-1948-1-git-send-email-bergwolf@gmail.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: From: Peng Tao Signed-off-by: Peng Tao --- fs/nfs/direct.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 34a6282..c39f775 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -78,6 +78,7 @@ struct nfs_direct_req { atomic_t io_count; /* i/os we're waiting for */ spinlock_t lock; /* protect completion state */ ssize_t count, /* bytes actually processed */ + bytes_left, /* bytes left to be sent */ error; /* any reported error */ struct completion completion; /* wait for i/o completion */ @@ -390,6 +391,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_pageio_descriptor *de user_addr += req_len; pos += req_len; count -= req_len; + dreq->bytes_left -= req_len; } /* The nfs_page now hold references to these pages */ nfs_direct_release_pages(pagevec, npages); @@ -456,6 +458,7 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov, goto out; dreq->inode = inode; + dreq->bytes_left = iov_length(iov, nr_segs); dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); dreq->l_ctx = nfs_get_lock_context(dreq->ctx); if (dreq->l_ctx == NULL) @@ -706,6 +709,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *d user_addr += req_len; pos += req_len; count -= req_len; + dreq->bytes_left -= req_len; } /* The nfs_page now hold references to these pages */ nfs_direct_release_pages(pagevec, npages); @@ -855,6 +859,7 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov, goto out; dreq->inode = inode; + dreq->bytes_left = count; dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp)); dreq->l_ctx = nfs_get_lock_context(dreq->ctx); if (dreq->l_ctx == NULL) -- 1.7.1.262.g5ef3d