A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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take close-on-exec logics to fs/file.c, clean it up a bit

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... and add cond_resched() there, while we are at it.  We can
get large latencies as is...

Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2012-08-21 09:56:33 -04:00
commit 6a6d27de34
3 changed files with 44 additions and 35 deletions
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41
fs/exec.c
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@ -1006,40 +1006,6 @@ no_thread_group:
return 0;
}
/*
* These functions flushes out all traces of the currently running executable
* so that a new one can be started
*/
static void flush_old_files(struct files_struct * files)
{
long j = -1;
struct fdtable *fdt;
spin_lock(&files->file_lock);
for (;;) {
unsigned long set, i;
j++;
i = j * BITS_PER_LONG;
fdt = files_fdtable(files);
if (i >= fdt->max_fds)
break;
set = fdt->close_on_exec[j];
if (!set)
continue;
fdt->close_on_exec[j] = 0;
spin_unlock(&files->file_lock);
for ( ; set ; i++,set >>= 1) {
if (set & 1) {
sys_close(i);
}
}
spin_lock(&files->file_lock);
}
spin_unlock(&files->file_lock);
}
char *get_task_comm(char *buf, struct task_struct *tsk)
{
/* buf must be at least sizeof(tsk->comm) in size */
@ -1050,6 +1016,11 @@ char *get_task_comm(char *buf, struct task_struct *tsk)
}
EXPORT_SYMBOL_GPL(get_task_comm);
/*
* These functions flushes out all traces of the currently running executable
* so that a new one can be started
*/
void set_task_comm(struct task_struct *tsk, char *buf)
{
task_lock(tsk);
@ -1171,7 +1142,7 @@ void setup_new_exec(struct linux_binprm * bprm)
current->self_exec_id++;
flush_signal_handlers(current, 0);
flush_old_files(current->files);
do_close_on_exec(current->files);
}
EXPORT_SYMBOL(setup_new_exec);