Diffstat (limited to 'man/io_uring_enter.2')
1 files changed, 19 insertions, 3 deletions
diff --git a/man/io_uring_enter.2 b/man/io_uring_enter.2
index 344d212..bb2d5a2 100644
@@ -197,8 +197,9 @@ will contain
-field is a bit mask. Currently, the only supported flag is
+field is a bit mask. The supported flags are:
When this flag is specified,
is an index into the files array registered with the io_uring instance (see the
@@ -206,7 +207,22 @@ is an index into the files array registered with the io_uring instance (see the
section of the
.BR io_uring_register (2)
+When this flag is specified, the SQE will not be started before previously
+submitted SQEs have completed, and new SQEs will not be started before this
+When this flag is specified, it forms a link with the next SQE in the
+submission ring. That next SQE will not be started before this one completes.
+This, in effect, forms a chain of SQEs, which can be arbitrarily long. The tail
+of the chain is denoted by the first SQE that does not have this flag set.
+This flag has no effect on previous SQE submissions, nor does it impact SQEs
+that are outside of the chain tail. This means that multiple chains can be
+executing in parallel, or chains and individual SQEs. Only members inside the
+chain are serialized.
specifies the I/O priority. See
.BR ioprio_get (2)