#include <linux/miscdevice.h>
#include <lustre_log.h>
+#include <uapi/linux/lustre/lustre_ioctl.h>
#include "mdc_internal.h"
__u64 crs_rec_count;
/* List of prefetched enqueued_record::enq_linkage_items */
struct list_head crs_rec_queue;
+ unsigned int crs_last_catidx;
+ unsigned int crs_last_idx;
+ bool crs_poll;
};
struct chlg_rec_entry {
rec = container_of(hdr, struct llog_changelog_rec, cr_hdr);
+ crs->crs_last_catidx = llh->lgh_hdr->llh_cat_idx;
+ crs->crs_last_idx = hdr->lrh_index;
+
if (rec->cr_hdr.lrh_type != CHANGELOG_REC) {
rc = -EINVAL;
CERROR("%s: not a changelog rec %x/%d in llog "DFID" rc = %d\n",
if (ctx == NULL)
GOTO(err_out, rc = -ENOENT);
+ crs->crs_last_catidx = -1;
+ crs->crs_last_idx = 0;
+
+again:
rc = llog_open(NULL, ctx, &llh, NULL, CHANGELOG_CATALOG,
LLOG_OPEN_EXISTS);
if (rc) {
GOTO(err_out, rc);
}
+
rc = llog_init_handle(NULL, llh,
LLOG_F_IS_CAT |
LLOG_F_EXT_JOBID |
LLOG_F_EXT_EXTRA_FLAGS |
LLOG_F_EXT_X_UIDGID |
LLOG_F_EXT_X_NID |
- LLOG_F_EXT_X_OMODE,
+ LLOG_F_EXT_X_OMODE |
+ LLOG_F_EXT_X_XATTR,
NULL);
if (rc) {
CERROR("%s: fail to init llog handle: rc = %d\n",
GOTO(err_out, rc);
}
- rc = llog_cat_process(NULL, llh, chlg_read_cat_process_cb, crs, 0, 0);
+ rc = llog_cat_process(NULL, llh, chlg_read_cat_process_cb, crs,
+ crs->crs_last_catidx, crs->crs_last_idx);
if (rc < 0) {
CERROR("%s: fail to process llog: rc = %d\n", obd->obd_name, rc);
GOTO(err_out, rc);
}
+ if (!kthread_should_stop() && crs->crs_poll) {
+ llog_cat_close(NULL, llh);
+ schedule_timeout_interruptible(HZ);
+ goto again;
+ }
crs->crs_eof = true;
return mask;
}
+static long chlg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ int rc;
+
+ struct chlg_reader_state *crs = file->private_data;
+ switch (cmd) {
+ case OBD_IOC_CHLG_POLL:
+ crs->crs_poll = !!arg;
+ rc = 0;
+ break;
+ default:
+ rc = -EINVAL;
+ break;
+ }
+ return rc;
+}
+
static const struct file_operations chlg_fops = {
.owner = THIS_MODULE,
.llseek = chlg_llseek,
.open = chlg_open,
.release = chlg_release,
.poll = chlg_poll,
+ .unlocked_ioctl = chlg_ioctl,
};
/**