gt->gt_atime_quantum = 3600;
gt->gt_new_files_jdata = 0;
gt->gt_new_files_directio = 0;
- gt->gt_max_atomic_write = 4 << 20;
gt->gt_max_readahead = 1 << 18;
gt->gt_lockdump_size = 131072;
gt->gt_stall_secs = 600;
gt->gt_complain_secs = 10;
gt->gt_reclaim_limit = 5000;
gt->gt_entries_per_readdir = 32;
- gt->gt_prefetch_secs = 10;
- gt->gt_greedy_default = HZ / 10;
- gt->gt_greedy_quantum = HZ / 40;
- gt->gt_greedy_max = HZ / 4;
gt->gt_statfs_quantum = 30;
gt->gt_statfs_slow = 0;
}
return 0;
}
+/**
+ * gfs2_read_super - Read the gfs2 super block from disk
+ * @sb: The VFS super block
+ * @sector: The location of the super block
+ *
+ * This uses the bio functions to read the super block from disk
+ * because we want to be 100% sure that we never read cached data.
+ * A super block is read twice only during each GFS2 mount and is
+ * never written to by the filesystem. The first time its read no
+ * locks are held, and the only details which are looked at are those
+ * relating to the locking protocol. Once locking is up and working,
+ * the sb is read again under the lock to establish the location of
+ * the master directory (contains pointers to journals etc) and the
+ * root directory.
+ *
+ * Returns: A page containing the sb or NULL
+ */
+
struct page *gfs2_read_super(struct super_block *sb, sector_t sector)
{
struct page *page;
mutex_lock(&sdp->sd_jindex_mutex);
for (;;) {
- error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED,
- GL_LOCAL_EXCL, ji_gh);
+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, ji_gh);
if (error)
break;
struct gfs2_log_header_host head;
int error;
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
- GL_LOCAL_EXCL, &t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh);
if (error)
return error;
gfs2_quota_sync(sdp);
gfs2_statfs_sync(sdp);
- error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED,
- GL_LOCAL_EXCL | GL_NOCACHE,
- &t_gh);
+ error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,
+ &t_gh);
if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags))
return error;