}
-#if 0
-static int ll_rd_path(char *page, char **start, off_t off, int count, int *eof,
- void *data)
-{
- return 0;
-}
-#endif
-
static int ll_rd_fstype(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
ENTRY;
if (1 != sscanf(buffer, "%d", &readahead))
- RETURN(-EINVAL);
+ RETURN(-EINVAL);
if (readahead)
sbi->ll_flags |= LL_SBI_READAHEAD;
RETURN(count);
}
+static int ll_wr_config_update(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct super_block *sb = (struct super_block*)data;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ ENTRY;
+
+ RETURN(ll_process_config_update(sbi, 0));
+}
+
+static int ll_rd_max_read_ahead_mb(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct super_block *sb = data;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ unsigned val;
+
+ spin_lock(&sbi->ll_lock);
+ val = (sbi->ll_max_read_ahead_pages << PAGE_CACHE_SHIFT) >> 20;
+ spin_unlock(&sbi->ll_lock);
+
+ return snprintf(page, count, "%u\n", val);
+}
+
+static int ll_wr_max_read_ahead_mb(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct super_block *sb = data;
+ struct ll_sb_info *sbi = ll_s2sbi(sb);
+ int val, rc;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc)
+ return rc;
+
+ if (val < 0 || val > (num_physpages << PAGE_SHIFT) >> 20)
+ return -ERANGE;
+
+ spin_lock(&sbi->ll_lock);
+ sbi->ll_max_read_ahead_pages = (val << 20) >> PAGE_CACHE_SHIFT;
+ spin_unlock(&sbi->ll_lock);
+
+ return count;
+}
+
static struct lprocfs_vars lprocfs_obd_vars[] = {
{ "uuid", ll_rd_sb_uuid, 0, 0 },
//{ "mntpt_path", ll_rd_path, 0, 0 },
{ "filesfree", ll_rd_filesfree, 0, 0 },
//{ "filegroups", lprocfs_rd_filegroups, 0, 0 },
{ "read_ahead", ll_rd_read_ahead, ll_wr_read_ahead, 0 },
+ { "config_update", 0, ll_wr_config_update, 0 },
+ { "max_read_ahead_mb", ll_rd_max_read_ahead_mb,
+ ll_wr_max_read_ahead_mb, 0 },
{ 0 }
};
return 0;
}
- spin_lock(&sbi->ll_pglist_lock);
+ spin_lock(&sbi->ll_lock);
llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
if (llap != NULL) {
int has_flags = 0;
struct page *page = llap->llap_page;
- seq_printf(seq, "%lu | %p %p | %p %p %lu [",
- sbi->ll_pglist_gen,
+ seq_printf(seq, "%lu | %p %p | %p %p %lu [",
+ sbi->ll_pglist_gen,
llap, llap->llap_cookie,
page, page->mapping->host, page->index);
seq_page_flag(seq, page, locked, has_flags);
seq_page_flag(seq, page, highmem, has_flags);
if (!has_flags)
seq_puts(seq, "-]\n");
- else
+ else
seq_puts(seq, "]\n");
}
- spin_unlock(&sbi->ll_pglist_lock);
+ spin_unlock(&sbi->ll_lock);
return 0;
}
return (void *)1;
}
-static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
+static void *llite_dump_pgcache_seq_next(struct seq_file *seq, void *v,
loff_t *pos)
{
struct ll_async_page *llap, *dummy_llap = seq->private;
/* we've just displayed the llap that is after us in the list.
* we advance to a position beyond it, returning null if there
* isn't another llap in the list beyond that new position. */
- spin_lock(&sbi->ll_pglist_lock);
+ spin_lock(&sbi->ll_lock);
llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
list_del_init(&dummy_llap->llap_proc_item);
if (llap) {
list_add(&dummy_llap->llap_proc_item, &llap->llap_proc_item);
llap = llite_pglist_next_llap(sbi, &dummy_llap->llap_proc_item);
}
- spin_unlock(&sbi->ll_pglist_lock);
+ spin_unlock(&sbi->ll_lock);
++*pos;
if (llap == NULL) {
seq = file->private_data;
seq->private = llap;
- spin_lock(&sbi->ll_pglist_lock);
+ spin_lock(&sbi->ll_lock);
list_add(&llap->llap_proc_item, &sbi->ll_pglist);
- spin_unlock(&sbi->ll_pglist_lock);
+ spin_unlock(&sbi->ll_lock);
return 0;
}
struct ll_async_page *llap = seq->private;
struct ll_sb_info *sbi = llap->llap_cookie;
- spin_lock(&sbi->ll_pglist_lock);
+ spin_lock(&sbi->ll_lock);
if (!list_empty(&llap->llap_proc_item))
list_del_init(&llap->llap_proc_item);
- spin_unlock(&sbi->ll_pglist_lock);
+ spin_unlock(&sbi->ll_lock);
OBD_FREE(llap, sizeof(*llap));
return seq_release(inode, file);
}
struct file_operations llite_dump_pgcache_fops = {
+ .owner = THIS_MODULE,
.open = llite_dump_pgcache_seq_open,
.read = seq_read,
.release = llite_dump_pgcache_seq_release,