LU-1934 ofd: implement precreate batching

[fs/lustre-release.git] / lustre / ofd / lproc_ofd.c

diff --git a/lustre/ofd/lproc_ofd.c b/lustre/ofd/lproc_ofd.c
index c40774b..d863df2 100644 (file)
--- a/lustre/ofd/lproc_ofd.c
+++ b/lustre/ofd/lproc_ofd.c
@@ -141,6 +141,38 @@ static int lprocfs_ofd_wr_grant_ratio(struct file *file, const char *buffer,
        return count;
 }
 
+static int lprocfs_ofd_rd_precreate_batch(char *page, char **start, off_t off,
+                                         int count, int *eof, void *data)
+{
+       struct obd_device *obd = (struct obd_device *)data;
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+
+       LASSERT(obd != NULL);
+       *eof = 1;
+       return snprintf(page, count, "%d\n", ofd->ofd_precreate_batch);
+}
+
+static int lprocfs_ofd_wr_precreate_batch(struct file *file, const char *buffer,
+                                         unsigned long count, void *data)
+{
+       struct obd_device *obd = (struct obd_device *)data;
+       struct ofd_device *ofd = ofd_dev(obd->obd_lu_dev);
+       int val;
+       int rc;
+
+       rc = lprocfs_write_helper(buffer, count, &val);
+       if (rc)
+               return rc;
+
+       if (val < 1)
+               return -EINVAL;
+
+       cfs_spin_lock(&ofd->ofd_objid_lock);
+       ofd->ofd_precreate_batch = val;
+       cfs_spin_unlock(&ofd->ofd_objid_lock);
+       return count;
+}
+
 static int lprocfs_ofd_rd_last_id(char *page, char **start, off_t off,
                                  int count, int *eof, void *data)
 {
@@ -438,6 +470,8 @@ static struct lprocfs_vars lprocfs_ofd_obd_vars[] = {
        { "grant_precreate",     lprocfs_ofd_rd_grant_precreate, 0, 0 },
        { "grant_ratio",         lprocfs_ofd_rd_grant_ratio,
                                 lprocfs_ofd_wr_grant_ratio, 0, 0 },
+       { "precreate_batch",     lprocfs_ofd_rd_precreate_batch,
+                                lprocfs_ofd_wr_precreate_batch, 0 },
        { "recovery_status",     lprocfs_obd_rd_recovery_status, 0, 0 },
        { "recovery_time_soft",  lprocfs_obd_rd_recovery_time_soft,
                                 lprocfs_obd_wr_recovery_time_soft, 0},