Merge branch 'master' into csb1725

[mv-sheeva.git] / fs / gfs2 / trans.h

diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h
index edf9d4bd908ee2726991f12ac869bfeb60971381..fb56b783e028c8ce61b0b663e67e2df14e408b07 100644 (file)
--- a/fs/gfs2/trans.h
+++ b/fs/gfs2/trans.h
@@ -20,11 +20,20 @@ struct gfs2_glock;
 #define RES_JDATA      1
 #define RES_DATA       1
 #define RES_LEAF       1
+#define RES_RG_HDR     1
 #define RES_RG_BIT     2
 #define RES_EATTR      1
 #define RES_STATFS     1
 #define RES_QUOTA      2
 
+/* reserve either the number of blocks to be allocated plus the rg header
+ * block, or all of the blocks in the rg, whichever is smaller */
+static inline unsigned int gfs2_rg_blocks(const struct gfs2_alloc *al)
+{
+       return (al->al_requested < al->al_rgd->rd_length)?
+              al->al_requested + 1 : al->al_rgd->rd_length;
+}
+
 int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks,
                     unsigned int revokes);