lkml.org 
[lkml]   [2010]   [Nov]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[PATCH] proc: less LOCK/UNLOCK in remove_proc_entry()
    For the common case, when proc entry is being removed and nobody is in
    the process of using it, save LOCK/UNLOCK pair.

    Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
    ---

    fs/proc/generic.c | 5 +----
    1 file changed, 1 insertion(+), 4 deletions(-)

    --- a/fs/proc/generic.c
    +++ b/fs/proc/generic.c
    @@ -834,12 +834,9 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent)

    wait_for_completion(de->pde_unload_completion);

    - goto continue_removing;
    + spin_lock(&de->pde_unload_lock);
    }
    - spin_unlock(&de->pde_unload_lock);

    -continue_removing:
    - spin_lock(&de->pde_unload_lock);
    while (!list_empty(&de->pde_openers)) {
    struct pde_opener *pdeo;


    \
     
     \ /
      Last update: 2010-11-27 16:27    [W:0.021 / U:32.400 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site