ocfs2: check if cluster name exists before deref

[~andy/linux] / fs / gfs2 / glops.c

diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index f88dcd92501098e4a9bca28724da34e8df5a0154..3bf0631b5d56d8a76a17b9f70e3fa1cc4b9ee2f0 100644 (file)
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -133,7 +133,8 @@ void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
 
 static void rgrp_go_sync(struct gfs2_glock *gl)
 {
-       struct address_space *metamapping = gfs2_glock2aspace(gl);
+       struct gfs2_sbd *sdp = gl->gl_sbd;
+       struct address_space *mapping = &sdp->sd_aspace;
        struct gfs2_rgrpd *rgd;
        int error;
 
@@ -141,10 +142,10 @@ static void rgrp_go_sync(struct gfs2_glock *gl)
                return;
        GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 
-       gfs2_log_flush(gl->gl_sbd, gl);
-       filemap_fdatawrite(metamapping);
-       error = filemap_fdatawait(metamapping);
-        mapping_set_error(metamapping, error);
+       gfs2_log_flush(sdp, gl);
+       filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
+       error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
+       mapping_set_error(mapping, error);
        gfs2_ail_empty_gl(gl);
 
        spin_lock(&gl->gl_spin);
@@ -166,11 +167,12 @@ static void rgrp_go_sync(struct gfs2_glock *gl)
 
 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 {
-       struct address_space *mapping = gfs2_glock2aspace(gl);
+       struct gfs2_sbd *sdp = gl->gl_sbd;
+       struct address_space *mapping = &sdp->sd_aspace;
 
        WARN_ON_ONCE(!(flags & DIO_METADATA));
-       gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
-       truncate_inode_pages(mapping, 0);
+       gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
+       truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 
        if (gl->gl_object) {
                struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
@@ -435,21 +437,19 @@ static int inode_go_lock(struct gfs2_holder *gh)
  * @seq: The iterator
  * @ip: the inode
  *
- * Returns: 0 on success, -ENOBUFS when we run out of space
  */
 
-static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
+static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 {
        const struct gfs2_inode *ip = gl->gl_object;
        if (ip == NULL)
-               return 0;
+               return;
        gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
                  (unsigned long long)ip->i_no_formal_ino,
                  (unsigned long long)ip->i_no_addr,
                  IF2DT(ip->i_inode.i_mode), ip->i_flags,
                  (unsigned int)ip->i_diskflags,
                  (unsigned long long)i_size_read(&ip->i_inode));
-       return 0;
 }
 
 /**
@@ -558,7 +558,7 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = {
        .go_unlock = gfs2_rgrp_go_unlock,
        .go_dump = gfs2_rgrp_dump,
        .go_type = LM_TYPE_RGRP,
-       .go_flags = GLOF_ASPACE | GLOF_LVB,
+       .go_flags = GLOF_LVB,
 };
 
 const struct gfs2_glock_operations gfs2_trans_glops = {