lkml.org 
[lkml]   [2020]   [Oct]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH RFC PKS/PMEM 16/58] fs/gfs2: Utilize new kmap_thread()
    Date
    From: Ira Weiny <ira.weiny@intel.com>

    The kmap() calls in this FS are localized to a single thread. To avoid
    the over head of global PKRS updates use the new kmap_thread() call.

    Cc: Bob Peterson <rpeterso@redhat.com>
    Cc: Andreas Gruenbacher <agruenba@redhat.com>
    Signed-off-by: Ira Weiny <ira.weiny@intel.com>
    ---
    fs/gfs2/bmap.c | 4 ++--
    fs/gfs2/ops_fstype.c | 4 ++--
    2 files changed, 4 insertions(+), 4 deletions(-)

    diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
    index 0f69fbd4af66..375af4528411 100644
    --- a/fs/gfs2/bmap.c
    +++ b/fs/gfs2/bmap.c
    @@ -67,7 +67,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
    }

    if (!PageUptodate(page)) {
    - void *kaddr = kmap(page);
    + void *kaddr = kmap_thread(page);
    u64 dsize = i_size_read(inode);

    if (dsize > gfs2_max_stuffed_size(ip))
    @@ -75,7 +75,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,

    memcpy(kaddr, dibh->b_data + sizeof(struct gfs2_dinode), dsize);
    memset(kaddr + dsize, 0, PAGE_SIZE - dsize);
    - kunmap(page);
    + kunmap_thread(page);

    SetPageUptodate(page);
    }
    diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
    index 6d18d2c91add..a5d20d9b504a 100644
    --- a/fs/gfs2/ops_fstype.c
    +++ b/fs/gfs2/ops_fstype.c
    @@ -263,9 +263,9 @@ static int gfs2_read_super(struct gfs2_sbd *sdp, sector_t sector, int silent)
    __free_page(page);
    return -EIO;
    }
    - p = kmap(page);
    + p = kmap_thread(page);
    gfs2_sb_in(sdp, p);
    - kunmap(page);
    + kunmap_thread(page);
    __free_page(page);
    return gfs2_check_sb(sdp, silent);
    }
    --
    2.28.0.rc0.12.gb6a658bd00c9
    \
     
     \ /
      Last update: 2020-10-09 21:53    [W:4.045 / U:0.044 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site