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io_uring: fix linked command file table usage

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We're not consistent in how the file table is grabbed and assigned if we
have a command linked that requires the use of it.

Add ->file_table to the io_op_defs[] array, and use that to determine
when to grab the table instead of having the handlers set it if they
need to defer. This also means we can kill the IO_WQ_WORK_NEEDS_FILES
flag. We always initialize work->files, so io-wq can just check for
that.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2020-01-29 13:46:44 -07:00
parent 75c6a03904
commit f86cd20c94
3 changed files with 21 additions and 14 deletions
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3
fs/io-wq.c
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@@ -476,8 +476,7 @@ next:
if (work->flags & IO_WQ_WORK_CB)
work->func(&work);
if ((work->flags & IO_WQ_WORK_NEEDS_FILES) &&
current->files != work->files) {
if (work->files && current->files != work->files) {
task_lock(current);
current->files = work->files;
task_unlock(current);