lkml.org 
[lkml]   [2019]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH AUTOSEL 4.19 186/191] fuse: use READ_ONCE on congestion_threshold and max_background
    Date
    From: Kirill Tkhai <ktkhai@virtuozzo.com>

    [ Upstream commit 2a23f2b8adbe4bd584f936f7ac17a99750eed9d7 ]

    Since they are of unsigned int type, it's allowed to read them
    unlocked during reporting to userspace. Let's underline this fact
    with READ_ONCE() macroses.

    Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
    Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    fs/fuse/control.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/fs/fuse/control.c b/fs/fuse/control.c
    index 0b694655d9880..acc35819aae64 100644
    --- a/fs/fuse/control.c
    +++ b/fs/fuse/control.c
    @@ -107,7 +107,7 @@ static ssize_t fuse_conn_max_background_read(struct file *file,
    if (!fc)
    return 0;

    - val = fc->max_background;
    + val = READ_ONCE(fc->max_background);
    fuse_conn_put(fc);

    return fuse_conn_limit_read(file, buf, len, ppos, val);
    @@ -144,7 +144,7 @@ static ssize_t fuse_conn_congestion_threshold_read(struct file *file,
    if (!fc)
    return 0;

    - val = fc->congestion_threshold;
    + val = READ_ONCE(fc->congestion_threshold);
    fuse_conn_put(fc);

    return fuse_conn_limit_read(file, buf, len, ppos, val);
    --
    2.20.1
    \
     
     \ /
      Last update: 2019-11-10 04:08    [W:4.018 / U:0.596 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site