From mboxrd@z Thu Jan 1 00:00:00 1970 From: joshi.k@samsung.com (Kanchan Joshi) Date: Wed, 09 Jan 2019 21:00:59 +0530 Subject: [PATCH 2/4] fs: introduce four macros for in-kernel hints In-Reply-To: <1547047861-7271-1-git-send-email-joshi.k@samsung.com> References: <1547047861-7271-1-git-send-email-joshi.k@samsung.com> Message-ID: <1547047861-7271-3-git-send-email-joshi.k@samsung.com> Exiting write-hints are exposed to user-mode. There is a possiblity of conflict if kernel happens to use those. This patch introduces four write-hints for exclusive kernel-mode use. Signed-off-by: Kanchan Joshi --- include/linux/fs.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/fs.h b/include/linux/fs.h index 811c777..e8548eb 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -291,6 +291,11 @@ enum rw_hint { WRITE_LIFE_MEDIUM = RWH_WRITE_LIFE_MEDIUM, WRITE_LIFE_LONG = RWH_WRITE_LIFE_LONG, WRITE_LIFE_EXTREME = RWH_WRITE_LIFE_EXTREME, +/* below ones are meant for in-kernel use */ + KERN_WRITE_LIFE_SHORT, + KERN_WRITE_LIFE_MEDIUM, + KERN_WRITE_LIFE_LONG, + KERN_WRITE_LIFE_EXTREME }; #define IOCB_EVENTFD (1 << 0) -- 2.7.4