X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_icache.c;h=65b2e3f85f52ac0b0851b63525afa8a6386bf80e;hb=fed41f7d039bad02f94cad9059e4b14cd81d13f2;hp=fb39a66914dd897251f952eece789f971ea31ab8;hpb=0aeeb3e73f5fd7faef3dce8cb590effd6ee51571;p=cascardo%2Flinux.git

diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index fb39a66914dd..65b2e3f85f52 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -1414,6 +1414,16 @@ xfs_inode_set_eofblocks_tag(
 	struct xfs_perag *pag;
 	int tagged;
 
+	/*
+	 * Don't bother locking the AG and looking up in the radix trees
+	 * if we already know that we have the tag set.
+	 */
+	if (ip->i_flags & XFS_IEOFBLOCKS)
+		return;
+	spin_lock(&ip->i_flags_lock);
+	ip->i_flags |= XFS_IEOFBLOCKS;
+	spin_unlock(&ip->i_flags_lock);
+
 	pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
 	spin_lock(&pag->pag_ici_lock);
 	trace_xfs_inode_set_eofblocks_tag(ip);
@@ -1449,6 +1459,10 @@ xfs_inode_clear_eofblocks_tag(
 	struct xfs_mount *mp = ip->i_mount;
 	struct xfs_perag *pag;
 
+	spin_lock(&ip->i_flags_lock);
+	ip->i_flags &= ~XFS_IEOFBLOCKS;
+	spin_unlock(&ip->i_flags_lock);
+
 	pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
 	spin_lock(&pag->pag_ici_lock);
 	trace_xfs_inode_clear_eofblocks_tag(ip);