diff options
Diffstat (limited to 'fs/pipe.c')
| -rw-r--r-- | fs/pipe.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/pipe.c b/fs/pipe.c index 8be52158c400..0913aed7fd0d 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -605,12 +605,16 @@ static unsigned long account_pipe_buffers(struct user_struct *user, static bool too_many_pipe_buffers_soft(unsigned long user_bufs) { - return pipe_user_pages_soft && user_bufs > pipe_user_pages_soft; + unsigned long soft_limit = READ_ONCE(pipe_user_pages_soft); + + return soft_limit && user_bufs > soft_limit; } static bool too_many_pipe_buffers_hard(unsigned long user_bufs) { - return pipe_user_pages_hard && user_bufs > pipe_user_pages_hard; + unsigned long hard_limit = READ_ONCE(pipe_user_pages_hard); + + return hard_limit && user_bufs > hard_limit; } static bool is_unprivileged_user(void) @@ -624,13 +628,14 @@ struct pipe_inode_info *alloc_pipe_info(void) unsigned long pipe_bufs = PIPE_DEF_BUFFERS; struct user_struct *user = get_current_user(); unsigned long user_bufs; + unsigned int max_size = READ_ONCE(pipe_max_size); pipe = kzalloc(sizeof(struct pipe_inode_info), GFP_KERNEL_ACCOUNT); if (pipe == NULL) goto out_free_uid; - if (pipe_bufs * PAGE_SIZE > pipe_max_size && !capable(CAP_SYS_RESOURCE)) - pipe_bufs = pipe_max_size >> PAGE_SHIFT; + if (pipe_bufs * PAGE_SIZE > max_size && !capable(CAP_SYS_RESOURCE)) + pipe_bufs = max_size >> PAGE_SHIFT; user_bufs = account_pipe_buffers(user, 0, pipe_bufs); |