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authorJens Axboe <axboe@kernel.dk>2024-01-22 14:36:16 -0700
committerJens Axboe <axboe@kernel.dk>2024-01-22 14:36:16 -0700
commit3841c8404173294db7741e9f9084f9852e1bf343 (patch)
treefe4f09e6655a315d6fa50cfc2a94944d0bcf41be
parentd5346b506717bfd65a5d09b987aff7c0f2e368fd (diff)
downloadliburing-3841c8404173294db7741e9f9084f9852e1bf343.tar.gz
man/io_uring_prep_read_multishot.3: clarify nbytes
It must be set to zero, or the request will cause an error. Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--man/io_uring_prep_read_multishot.35
1 files changed, 4 insertions, 1 deletions
diff --git a/man/io_uring_prep_read_multishot.3 b/man/io_uring_prep_read_multishot.3
index 13bd0a54..4adf31ce 100644
--- a/man/io_uring_prep_read_multishot.3
+++ b/man/io_uring_prep_read_multishot.3
@@ -24,12 +24,15 @@ helper prepares an IO read multishot request. The submission queue entry
is setup to use the file descriptor
.I fd
to start reading
-.I nbytes
into a buffer from the provided buffer group with ID
.I buf_group
at the specified
.IR offset .
+.I nbytes
+must be set to zero, as the size read will be given by the size of the
+buffers in the indicated buffer group IO.
+
On files that are not capable of seeking, the offset must be 0 or -1.
If