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| -rw-r--r-- | man/io_uring_enter.2 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/man/io_uring_enter.2 b/man/io_uring_enter.2 index 6c1f242..92cc77e 100644 --- a/man/io_uring_enter.2 +++ b/man/io_uring_enter.2 @@ -52,6 +52,13 @@ flag in .BR io_uring_setup(2)), as for IRQ driven I/O, the application can just check the completion queue without entering the kernel. +.PP +When the system call returns that a certain amount of SQEs have been +consumed and submitted, it's safe to reuse SQE entries in the ring. This is +true even if the actual IO submission had to be punted to async context, +which means that the SQE may in fact not have been submitted yet. If the +kernel requires later use of a particular SQE entry, it will have made a +private copy of it. .I sig is a pointer to a signal mask (see |