GFS2: Move gfs2_icbit_munge into quota.c

[karo-tx-linux.git] / fs / gfs2 / quota.c

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 8fe7a0a87c8014f462e07429a7c78a7baa072c7a..fd1ec5243d2eeeb72b98d4996c200e8e8dd29f25 100644 (file)
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -289,6 +289,26 @@ static void slot_hold(struct gfs2_quota_data *qd)
        spin_unlock(&qd_lru_lock);
 }
 
+static void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
+                            unsigned int bit, int new_value)
+{
+       unsigned int c, o, b = bit;
+       int old_value;
+
+       c = b / (8 * PAGE_SIZE);
+       b %= 8 * PAGE_SIZE;
+       o = b / 8;
+       b %= 8;
+
+       old_value = (bitmap[c][o] & (1 << b));
+       gfs2_assert_withdraw(sdp, !old_value != !new_value);
+
+       if (new_value)
+               bitmap[c][o] |= 1 << b;
+       else
+               bitmap[c][o] &= ~(1 << b);
+}
+
 static void slot_put(struct gfs2_quota_data *qd)
 {
        struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;