linux-kernel - [PATCH] mm: account reaped page cache on inode cache pruning

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Message-ID: <20111116134713.8933.34389.stgit@zurg>
Date:	Wed, 16 Nov 2011 17:47:13 +0300
From:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
To:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] mm: account reaped page cache on inode cache pruning

Inode cache pruning indirectly reclaims page-cache by invalidating mapping pages.
Let's account them into reclaim-state to notice this progress in memory reclaimer.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
---
 fs/inode.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/inode.c b/fs/inode.c
index ee4e66b..1f6c48d 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -692,6 +692,8 @@ void prune_icache_sb(struct super_block *sb, int nr_to_scan)
 	else
 		__count_vm_events(PGINODESTEAL, reap);
 	spin_unlock(&sb->s_inode_lru_lock);
+	if (current->reclaim_state)
+		current->reclaim_state->reclaimed_slab += reap;
 
 	dispose_list(&freeable);
 }

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