lkml.org 
[lkml]   [2018]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[RFC PATCH 01/09] Introduce offset for the 1st page in data transfer structures
    Date
    From: Long Li <longli@microsoft.com>

    Currently CIFS allocates its own pages for data transfer, they don't need offset
    since it's always 0 in the 1st page.

    Direct data transfer needs to define an offset because user-data may not start
    on the page boundary

    Signed-off-by: Long Li <longli@microsoft.com>
    ---
    fs/cifs/cifsglob.h | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
    index cb950a5..a51855c 100644
    --- a/fs/cifs/cifsglob.h
    +++ b/fs/cifs/cifsglob.h
    @@ -176,6 +176,7 @@ struct smb_rqst {
    struct kvec *rq_iov; /* array of kvecs */
    unsigned int rq_nvec; /* number of kvecs in array */
    struct page **rq_pages; /* pointer to array of page ptrs */
    + unsigned int rq_offset; /* the offset to the 1st page */
    unsigned int rq_npages; /* number pages in array */
    unsigned int rq_pagesz; /* page size to use */
    unsigned int rq_tailsz; /* length of last page */
    @@ -1167,8 +1168,10 @@ struct cifs_readdata {
    struct kvec iov[2];
    #ifdef CONFIG_CIFS_SMB_DIRECT
    struct smbd_mr *mr;
    + struct page **direct_pages;
    #endif
    unsigned int pagesz;
    + unsigned int page_offset;
    unsigned int tailsz;
    unsigned int credits;
    unsigned int nr_pages;
    @@ -1192,8 +1195,10 @@ struct cifs_writedata {
    int result;
    #ifdef CONFIG_CIFS_SMB_DIRECT
    struct smbd_mr *mr;
    + struct page **direct_pages;
    #endif
    unsigned int pagesz;
    + unsigned int page_offset;
    unsigned int tailsz;
    unsigned int credits;
    unsigned int nr_pages;
    --
    2.7.4
    \
     
     \ /
      Last update: 2018-05-18 02:24    [W:4.261 / U:0.100 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site