Values in the kvstore are raw byte arrays, not strings.

[bluesky.git] / bluesky / cache.c

diff --git a/bluesky/cache.c b/bluesky/cache.c
index 979c917..e9d95cf 100644 (file)
--- a/bluesky/cache.c
+++ b/bluesky/cache.c
@@ -14,6 +14,7 @@
 #include "bluesky-private.h"
 
 #define WRITEBACK_DELAY (5 * 1000000)
+#define CACHE_CLEAN_DELAY (30 * 1000000)
 
 /* Filesystem caching and cache coherency. */
 
@@ -36,6 +37,13 @@ static void writeback_complete(gpointer a, gpointer i)
     g_mutex_unlock(inode->lock);
 }
 
+/* Drop cached data for a given inode, if it is clean.  inode must be locked. */
+static void drop_caches(BlueSkyInode *inode)
+{
+    if (inode->type == BLUESKY_REGULAR)
+        bluesky_file_drop_cached(inode);
+}
+
 static void flushd_inode(gpointer value, gpointer user_data)
 {
     BlueSkyFS *fs = (BlueSkyFS *)user_data;
@@ -45,6 +53,9 @@ static void flushd_inode(gpointer value, gpointer user_data)
     g_mutex_lock(inode->lock);
 
     if (inode->change_count == inode->change_commit) {
+        uint64_t delay = bluesky_get_current_time() - inode->access_time;
+        if (delay >= CACHE_CLEAN_DELAY)
+            drop_caches(inode);
         g_mutex_unlock(inode->lock);
         bluesky_inode_unref(inode);
         return;