diff mbox series

[liburing,v2,07/12] update io_uring_enter.2 docs for IORING_FEAT_NODROP

Message ID 20220901093303.1974274-8-dylany@fb.com (mailing list archive)
State New
Headers show
Series Defer taskrun changes | expand

Commit Message

Dylan Yudaken Sept. 1, 2022, 9:32 a.m. UTC 
The EBUSY docs are out of date, so update them for the IORING_FEAT_NODROP
feature flag

Signed-off-by: Dylan Yudaken <dylany@fb.com>
---
 man/io_uring_enter.2 | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
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Patch

diff --git a/man/io_uring_enter.2 b/man/io_uring_enter.2
index 1a9311e20357..4d8d488b5c1f 100644
--- a/man/io_uring_enter.2
+++ b/man/io_uring_enter.2
@@ -1330,7 +1330,18 @@  is a valid file descriptor, but the io_uring ring is not in the right state
 for details on how to enable the ring.
 .TP
 .B EBUSY
-The application is attempting to overcommit the number of requests it can have
+If the
+.B IORING_FEAT_NODROP
+feature flag is set, then
+.B EBUSY
+will be returned if there were overflow entries,
+.B IORING_ENTER_GETEVENTS
+flag is set and not all of the overflow entries were able to be flushed to
+the CQ ring.
+
+Without
+.B IORING_FEAT_NODROP
+the application is attempting to overcommit the number of requests it can have
 pending. The application should wait for some completions and try again. May
 occur if the application tries to queue more requests than we have room for in
 the CQ ring, or if the application attempts to wait for more events without