diff options
| author | Gu Zheng <guz.fnst@cn.fujitsu.com> | 2014-09-03 17:45:44 +0800 |
|---|---|---|
| committer | Benjamin LaHaise <bcrl@kvack.org> | 2014-09-04 16:54:47 -0400 |
| commit | 6098b45b32e6baeacc04790773ced9340601d511 (patch) | |
| tree | ef7d685783dc69524d1512dd6273fac127c8962b | |
| parent | 2ff396be602f10b5eab8e73b24f20348fa2de159 (diff) | |
| download | kgraft-6098b45b32e6baeacc04790773ced9340601d511.tar.gz | |
aio: block exit_aio() until all context requests are completed
It seems that exit_aio() also needs to wait for all iocbs to complete (like
io_destroy), but we missed the wait step in current implemention, so fix
it in the same way as we did in io_destroy.
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Cc: stable@vger.kernel.org
| -rw-r--r-- | fs/aio.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/aio.c b/fs/aio.c index 5f2e9c6c328e89..733750096b71b3 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -793,6 +793,8 @@ void exit_aio(struct mm_struct *mm) for (i = 0; i < table->nr; ++i) { struct kioctx *ctx = table->table[i]; + struct completion requests_done = + COMPLETION_INITIALIZER_ONSTACK(requests_done); if (!ctx) continue; @@ -804,7 +806,10 @@ void exit_aio(struct mm_struct *mm) * that it needs to unmap the area, just set it to 0. */ ctx->mmap_size = 0; - kill_ioctx(mm, ctx, NULL); + kill_ioctx(mm, ctx, &requests_done); + + /* Wait until all IO for the context are done. */ + wait_for_completion(&requests_done); } RCU_INIT_POINTER(mm->ioctx_table, NULL); |