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io_uring: ensure that fsnotify is always called

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Ensure that we call fsnotify_modify() if we write a file, and that we
do fsnotify_access() if we read it. This enables anyone using inotify
on the file to get notified.

Ditto for fallocate, ensure that fsnotify_modify() is called.

Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2022-03-20 13:08:38 -06:00
parent abdad709ed
commit f63cf5192f
1 changed files with 7 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

8
fs/io_uring.c
View file

@ -2973,8 +2973,12 @@ static bool io_rw_should_reissue(struct io_kiocb *req)
static bool __io_complete_rw_common(struct io_kiocb *req, long res)
{
if (req->rw.kiocb.ki_flags & IOCB_WRITE)
if (req->rw.kiocb.ki_flags & IOCB_WRITE) {
kiocb_end_write(req);
fsnotify_modify(req->file);
} else {
fsnotify_access(req->file);
}
if (unlikely(res != req->result)) {
if ((res == -EAGAIN || res == -EOPNOTSUPP) &&
io_rw_should_reissue(req)) {
@ -4537,6 +4541,8 @@ static int io_fallocate(struct io_kiocb *req, unsigned int issue_flags)
req->sync.len);
if (ret < 0)
req_set_fail(req);
else
fsnotify_modify(req->file);
io_req_complete(req, ret);
return 0;
}