[stgt] [PATCH] recommend signalfd in README

[FUJITA Tomonori]

get better performance with signalfd.

Signed-off-by: FUJITA Tomonori <fujita.tomonori at lab.ntt.co.jp>
---
 README |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/README b/README
index 5d653e4..92b7528 100644
--- a/README
+++ b/README
@@ -42,6 +42,9 @@ The code is under the GNU General Public License version 2.
 
 Preparation
 -------------
+Linux kernel 2.6.22 or newer are recommended because tgt can get
+better performance with signalfd.
+
 Target drivers have their own ways to build, configure, etc. Please
 find an appropriate documentation in the doc directory. You might find
 other useful information on tgt's site:
-- 
1.6.5

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