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io_uring: only hash regular files for async work execution

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We hash regular files to avoid having multiple threads hammer on the
inode mutex, but it should not be needed on other types of files
(like sockets).

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2019-12-09 20:12:38 -07:00
parent 4a0a7a1874
commit 53108d476a
1 changed files with 3 additions and 1 deletions
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4
fs/io_uring.c
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@ -581,7 +581,9 @@ static inline bool io_prep_async_work(struct io_kiocb *req,
switch (req->sqe->opcode) {
case IORING_OP_WRITEV:
case IORING_OP_WRITE_FIXED:
do_hashed = true;
/* only regular files should be hashed for writes */
if (req->flags & REQ_F_ISREG)
do_hashed = true;
/* fall-through */
case IORING_OP_READV:
case IORING_OP_READ_FIXED: