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[PATCH 08/14] resource limits: track highwater mark of number of files

From Topi Miettinen <toiwoton@gmail.com>
Newsgroups linux.kernel
Subject [PATCH 08/14] resource limits: track highwater mark of number of files
Date 2016-07-15 12:40 +0200
Message-ID <rV8Hf-5Li-9@gated-at.bofh.it> (permalink)
References <rV8Hf-5Li-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Track maximum number of files for the process, to be able to configure
RLIMIT_NOFILE resource limits. The information is available
with taskstats and cgroupstats netlink socket.

Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
---
 fs/file.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/file.c b/fs/file.c
index 6b1acdf..9de37c9 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -547,6 +547,8 @@ repeat:
 	}
 #endif
 
+	update_resource_highwatermark(RLIMIT_NOFILE, fd);
+
 out:
 	spin_unlock(&files->file_lock);
 	return error;
@@ -857,6 +859,8 @@ __releases(&files->file_lock)
 	if (tofree)
 		filp_close(tofree, files);
 
+	update_resource_highwatermark(RLIMIT_NOFILE, fd);
+
 	return fd;
 
 Ebusy:
-- 
2.8.1

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[PATCH 08/14] resource limits: track highwater mark of number of files Topi Miettinen <toiwoton@gmail.com> - 2016-07-15 12:40 +0200

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