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author | 2020-09-04 12:55:22 -0700 | |
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committer | 2020-09-04 12:55:22 -0700 | |
commit | d849ca483dba7546ad176da83bf66d1c013725f6 (patch) | |
tree | 68be0644390572caf8244853d9bc220d7f53db08 /fs | |
parent | Merge tag 'thermal-v5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git... (diff) | |
parent | io_uring: no read/write-retry on -EAGAIN error and O_NONBLOCK marked file (diff) | |
download | linux-d849ca483dba7546ad176da83bf66d1c013725f6.tar.gz linux-d849ca483dba7546ad176da83bf66d1c013725f6.tar.bz2 linux-d849ca483dba7546ad176da83bf66d1c013725f6.zip |
Merge tag 'io_uring-5.9-2020-09-04' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- EAGAIN with O_NONBLOCK retry fix
- Two small fixes for registered files (Jiufei)
* tag 'io_uring-5.9-2020-09-04' of git://git.kernel.dk/linux-block:
io_uring: no read/write-retry on -EAGAIN error and O_NONBLOCK marked file
io_uring: set table->files[i] to NULL when io_sqe_file_register failed
io_uring: fix removing the wrong file in __io_sqe_files_update()
Diffstat (limited to 'fs')
-rw-r--r-- | fs/io_uring.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index ce69bd9b0838..0d7be2e9d005 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2300,8 +2300,11 @@ end_req: static bool io_rw_reissue(struct io_kiocb *req, long res) { #ifdef CONFIG_BLOCK + umode_t mode = file_inode(req->file)->i_mode; int ret; + if (!S_ISBLK(mode) && !S_ISREG(mode)) + return false; if ((res != -EAGAIN && res != -EOPNOTSUPP) || io_wq_current_is_worker()) return false; @@ -3146,6 +3149,9 @@ static int io_read(struct io_kiocb *req, bool force_nonblock, /* IOPOLL retry should happen for io-wq threads */ if (!force_nonblock && !(req->ctx->flags & IORING_SETUP_IOPOLL)) goto done; + /* no retry on NONBLOCK marked file */ + if (req->file->f_flags & O_NONBLOCK) + goto done; /* some cases will consume bytes even on error returns */ iov_iter_revert(iter, iov_count - iov_iter_count(iter)); ret = io_setup_async_rw(req, iovec, inline_vecs, iter, false); @@ -3287,10 +3293,14 @@ static int io_write(struct io_kiocb *req, bool force_nonblock, */ if (ret2 == -EOPNOTSUPP && (kiocb->ki_flags & IOCB_NOWAIT)) ret2 = -EAGAIN; + /* no retry on NONBLOCK marked file */ + if (ret2 == -EAGAIN && (req->file->f_flags & O_NONBLOCK)) + goto done; if (!force_nonblock || ret2 != -EAGAIN) { /* IOPOLL retry should happen for io-wq threads */ if ((req->ctx->flags & IORING_SETUP_IOPOLL) && ret2 == -EAGAIN) goto copy_iov; +done: kiocb_done(kiocb, ret2, cs); } else { copy_iov: @@ -7324,7 +7334,7 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx, table = &ctx->file_data->table[i >> IORING_FILE_TABLE_SHIFT]; index = i & IORING_FILE_TABLE_MASK; if (table->files[index]) { - file = io_file_from_index(ctx, index); + file = table->files[index]; err = io_queue_file_removal(data, file); if (err) break; @@ -7353,6 +7363,7 @@ static int __io_sqe_files_update(struct io_ring_ctx *ctx, table->files[index] = file; err = io_sqe_file_register(ctx, file, i); if (err) { + table->files[index] = NULL; fput(file); break; } |