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Diffstat (limited to 'doc/coreutils.texi')
| -rw-r--r-- | doc/coreutils.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 9047925e3..387377345 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -7729,6 +7729,14 @@ If you combine this flag with the @samp{of=@var{file}} operand, you should also specify @samp{conv=notrunc} unless you want the output file to be truncated before being appended to. +@item cio +@opindex cio +@cindex concurrent I/O +Use concurrent I/O mode for data. This mode performs direct I/O +and drops the @acronym{POSIX} requirement to serialize all I/O to the same file. +A file cannot be opened in CIO mode and with a standard open at the +same time. + @item direct @opindex direct @cindex direct I/O |