lkml.org 
[lkml]   [2013]   [May]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[RFC 2/4] mm: introduce __swapcache_free
    Date
    The __swapcache_free is almost same with swapcache_free
    but only difference is that caller should pass stable swap_info_struct.

    This function will be used by next patchsets.

    Signed-off-by: Minchan Kim <minchan@kernel.org>
    ---
    mm/swapfile.c | 14 ++++++++++----
    1 file changed, 10 insertions(+), 4 deletions(-)

    diff --git a/mm/swapfile.c b/mm/swapfile.c
    index 2966978..33ebdd5 100644
    --- a/mm/swapfile.c
    +++ b/mm/swapfile.c
    @@ -634,20 +634,26 @@ void swap_free(swp_entry_t entry)
    }
    }

    +
    +void __swapcache_free(struct swap_info_struct *p,
    + swp_entry_t entry, struct page *page)
    +{
    + unsigned char count;
    + count = swap_entry_free(p, entry, SWAP_HAS_CACHE);
    + mem_cgroup_uncharge_swapcache(page, entry, count != 0);
    +}
    +
    /*
    * Called after dropping swapcache to decrease refcnt to swap entries.
    */
    void swapcache_free(swp_entry_t entry, struct page *page)
    {
    struct swap_info_struct *p;
    - unsigned char count;

    p = swap_info_get(entry);
    if (p) {
    spin_lock(&p->lock);
    - count = swap_entry_free(p, entry, SWAP_HAS_CACHE);
    - if (page)
    - mem_cgroup_uncharge_swapcache(page, entry, count != 0);
    + __swapcache_free(p, entry, page);
    spin_unlock(&p->lock);
    }
    }
    --
    1.8.2.1


    \
     
     \ /
      Last update: 2013-05-13 05:01    [W:5.530 / U:0.004 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site