misc: Add support for Linux uio.h RWF_NOAPPEND flag
In Linux 6.9 a new flag is added to allow for Per-io operations to disable append mode even if a file was opened with the flag O_APPEND. This is done with the new RWF_NOAPPEND flag. This caused two test failures as these tests expected the flag 0x00000020 to be unused. Adding the flag definition now fixes these tests on Linux 6.9 (v6.9-rc1). FAIL: misc/tst-preadvwritev2 FAIL: misc/tst-preadvwritev64v2 This patch adds the flag, adjusts the test and adds details to documentation. Link: https://lore.kernel.org/all/20200831153207.GO3265@brightrain.aerifal.cx/ Reviewed-by:Adhemerval Zanella <adhemerval.zanella@linaro.org> (cherry picked from commit 3db9d208)
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