diff options
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index b31283d81c52..0edf14a9840e 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -58,7 +58,6 @@ #include <linux/init.h> #include <linux/capability.h> #include <linux/file.h> -#include <linux/fdtable.h> #include <linux/generic-radix-tree.h> #include <linux/string.h> #include <linux/seq_file.h> @@ -832,19 +831,21 @@ static const struct file_operations proc_single_file_operations = { struct mm_struct *proc_mem_open(struct inode *inode, unsigned int mode) { struct task_struct *task = get_proc_task(inode); - struct mm_struct *mm = ERR_PTR(-ESRCH); + struct mm_struct *mm; - if (task) { - mm = mm_access(task, mode | PTRACE_MODE_FSCREDS); - put_task_struct(task); + if (!task) + return ERR_PTR(-ESRCH); - if (!IS_ERR_OR_NULL(mm)) { - /* ensure this mm_struct can't be freed */ - mmgrab(mm); - /* but do not pin its memory */ - mmput(mm); - } - } + mm = mm_access(task, mode | PTRACE_MODE_FSCREDS); + put_task_struct(task); + + if (IS_ERR(mm)) + return mm == ERR_PTR(-ESRCH) ? NULL : mm; + + /* ensure this mm_struct can't be freed */ + mmgrab(mm); + /* but do not pin its memory */ + mmput(mm); return mm; } @@ -2208,7 +2209,7 @@ static int map_files_d_revalidate(struct dentry *dentry, unsigned int flags) goto out_notask; mm = mm_access(task, PTRACE_MODE_READ_FSCREDS); - if (IS_ERR_OR_NULL(mm)) + if (IS_ERR(mm)) goto out; if (!dname_to_vma_addr(dentry, &vm_start, &vm_end)) { @@ -2553,8 +2554,8 @@ static int show_timer(struct seq_file *m, void *v) seq_printf(m, "ID: %d\n", timer->it_id); seq_printf(m, "signal: %d/%px\n", - timer->sigq->info.si_signo, - timer->sigq->info.si_value.sival_ptr); + timer->sigq.info.si_signo, + timer->sigq.info.si_value.sival_ptr); seq_printf(m, "notify: %s/%s.%d\n", nstr[notify & ~SIGEV_THREAD_ID], (notify & SIGEV_THREAD_ID) ? "tid" : "pid", |