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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-06-24 07:56:45 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-22 21:57:58 +0200 |
| commit | 4a9d4b024a3102fc083c925c242d98ac27b1c5f6 (patch) | |
| tree | 1a4e9d1e86a2c1b70f8352c13da8a7eee97bc5f1 /init | |
| parent | deal with task_work callbacks adding more work (diff) | |
| download | linux-4a9d4b024a3102fc083c925c242d98ac27b1c5f6.tar.xz linux-4a9d4b024a3102fc083c925c242d98ac27b1c5f6.zip | |
switch fput to task_work_add
... and schedule_work() for interrupt/kernel_thread callers
(and yes, now it *is* OK to call from interrupt).
We are guaranteed that __fput() will be done before we return
to userland (or exit). Note that for fput() from a kernel
thread we get an async behaviour; it's almost always OK, but
sometimes you might need to have __fput() completed before
you do anything else. There are two mechanisms for that -
a general barrier (flush_delayed_fput()) and explicit
__fput_sync(). Both should be used with care (as was the
case for fput() from kernel threads all along). See comments
in fs/file_table.c for details.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/init/main.c b/init/main.c index b5cc0a7c4708..3f151f6c6da7 100644 --- a/init/main.c +++ b/init/main.c @@ -68,6 +68,7 @@ #include <linux/shmem_fs.h> #include <linux/slab.h> #include <linux/perf_event.h> +#include <linux/file.h> #include <asm/io.h> #include <asm/bugs.h> @@ -804,8 +805,8 @@ static noinline int init_post(void) system_state = SYSTEM_RUNNING; numa_default_policy(); - current->signal->flags |= SIGNAL_UNKILLABLE; + flush_delayed_fput(); if (ramdisk_execute_command) { run_init_process(ramdisk_execute_command); |