LU-8066 llite: move /proc/fs/lustre/llite/kbytes* to sysfs

Move kbytestotal, kbytesavail and kbytesfree files from
/proc/fs/lustre/llite/* to /sys/fs/lustre/llite/*/

This is a modified version of

Linux-commit: 5804b11e1487558c6740282a01a08bb4ba0c6d06

due to the large amount of changes to the OpenSFS/Intel branch.

Change-Id: Ifb43c01bb0055051cecb01ed6a183d1797d3870e
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/32497
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>

diff --git a/lustre/llite/lproc_llite.c b/lustre/llite/lproc_llite.c
index 6330ea0..c777d35 100644 (file)
--- a/lustre/llite/lproc_llite.c
+++ b/lustre/llite/lproc_llite.c
@@ -131,68 +131,77 @@ static ssize_t ll_stat_blksize_seq_write(struct file *file,
 }
 LPROC_SEQ_FOPS(ll_stat_blksize);
 
-static int ll_kbytestotal_seq_show(struct seq_file *m, void *v)
+static ssize_t kbytestotal_show(struct kobject *kobj, struct attribute *attr,
+                               char *buf)
 {
-       struct super_block *sb = m->private;
+       struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
+                                             ll_kset.kobj);
        struct obd_statfs osfs;
+       u32 blk_size;
+       u64 result;
        int rc;
 
-       LASSERT(sb != NULL);
-       rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_NODELAY);
-       if (!rc) {
-               __u32 blk_size = osfs.os_bsize >> 10;
-               __u64 result = osfs.os_blocks;
+       rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
+       if (rc)
+               return rc;
 
-               while (blk_size >>= 1)
-                       result <<= 1;
+       blk_size = osfs.os_bsize >> 10;
+       result = osfs.os_blocks;
 
-               seq_printf(m, "%llu\n", result);
-       }
-       return rc;
+       while (blk_size >>= 1)
+               result <<= 1;
+
+       return sprintf(buf, "%llu\n", result);
 }
-LPROC_SEQ_FOPS_RO(ll_kbytestotal);
+LUSTRE_RO_ATTR(kbytestotal);
 
-static int ll_kbytesfree_seq_show(struct seq_file *m, void *v)
+static ssize_t kbytesfree_show(struct kobject *kobj, struct attribute *attr,
+                              char *buf)
 {
-       struct super_block *sb = m->private;
+       struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
+                                             ll_kset.kobj);
        struct obd_statfs osfs;
+       u32 blk_size;
+       u64 result;
        int rc;
 
-       LASSERT(sb != NULL);
-       rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_NODELAY);
-       if (!rc) {
-               __u32 blk_size = osfs.os_bsize >> 10;
-               __u64 result = osfs.os_bfree;
+       rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
+       if (rc)
+               return rc;
 
-               while (blk_size >>= 1)
-                       result <<= 1;
+       blk_size = osfs.os_bsize >> 10;
+       result = osfs.os_bfree;
 
-               seq_printf(m, "%llu\n", result);
-       }
-       return rc;
+       while (blk_size >>= 1)
+               result <<= 1;
+
+       return sprintf(buf, "%llu\n", result);
 }
-LPROC_SEQ_FOPS_RO(ll_kbytesfree);
+LUSTRE_RO_ATTR(kbytesfree);
 
-static int ll_kbytesavail_seq_show(struct seq_file *m, void *v)
+static ssize_t kbytesavail_show(struct kobject *kobj, struct attribute *attr,
+                               char *buf)
 {
-       struct super_block *sb = m->private;
+       struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
+                                             ll_kset.kobj);
        struct obd_statfs osfs;
+       u32 blk_size;
+       u64 result;
        int rc;
 
-       LASSERT(sb != NULL);
-       rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_NODELAY);
-       if (!rc) {
-               __u32 blk_size = osfs.os_bsize >> 10;
-               __u64 result = osfs.os_bavail;
+       rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
+       if (rc)
+               return rc;
 
-               while (blk_size >>= 1)
-                       result <<= 1;
+       blk_size = osfs.os_bsize >> 10;
+       result = osfs.os_bavail;
 
-               seq_printf(m, "%llu\n", result);
-       }
-       return rc;
+       while (blk_size >>= 1)
+               result <<= 1;
+
+       return sprintf(buf, "%llu\n", result);
 }
-LPROC_SEQ_FOPS_RO(ll_kbytesavail);
+LUSTRE_RO_ATTR(kbytesavail);
 
 static int ll_filestotal_seq_show(struct seq_file *m, void *v)
 {
@@ -1174,12 +1183,6 @@ struct lprocfs_vars lprocfs_llite_obd_vars[] = {
          .fops =       &ll_site_stats_fops                     },
        { .name =       "stat_blocksize",
          .fops =       &ll_stat_blksize_fops                   },
-       { .name =       "kbytestotal",
-         .fops =       &ll_kbytestotal_fops                    },
-       { .name =       "kbytesfree",
-         .fops =       &ll_kbytesfree_fops                     },
-       { .name =       "kbytesavail",
-         .fops =       &ll_kbytesavail_fops                    },
        { .name =       "filestotal",
          .fops =       &ll_filestotal_fops                     },
        { .name =       "filesfree",
@@ -1237,6 +1240,9 @@ struct lprocfs_vars lprocfs_llite_obd_vars[] = {
 
 static struct attribute *llite_attrs[] = {
        &lustre_attr_blocksize.attr,
+       &lustre_attr_kbytestotal.attr,
+       &lustre_attr_kbytesfree.attr,
+       &lustre_attr_kbytesavail.attr,
        &lustre_attr_statahead_running_max.attr,
        NULL,
 };