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

Move blocksize file from /proc/fs/lustre/llite/*/ to
/sys/fs/lustre/llite/*/blocksize

This is a heavly modified version of

Linux-commit: 364bcfc8634d5625dbb41683b061bddf307a70e8

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

Change-Id: I0b54890e6c5d5f172c2cc3d081c38ea2307b0f88
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/32496
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>

diff --git a/lustre/llite/lproc_llite.c b/lustre/llite/lproc_llite.c
index 21ae273..6330ea0 100644 (file)
--- a/lustre/llite/lproc_llite.c
+++ b/lustre/llite/lproc_llite.c
@@ -84,19 +84,21 @@ static const struct file_operations ll_rw_extents_stats_pp_fops;
 static const struct file_operations ll_rw_offset_stats_fops;
 static __s64 ll_stats_pid_write(const char __user *buf, size_t len);
 
-static int ll_blksize_seq_show(struct seq_file *m, void *v)
+static ssize_t blocksize_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;
        int rc;
 
-       LASSERT(sb != NULL);
-       rc = ll_statfs_internal(ll_s2sbi(sb), &osfs, OBD_STATFS_NODELAY);
-       if (!rc)
-               seq_printf(m, "%u\n", osfs.os_bsize);
-       return rc;
+       rc = ll_statfs_internal(sbi, &osfs, OBD_STATFS_NODELAY);
+       if (rc)
+               return rc;
+
+       return sprintf(buf, "%u\n", osfs.os_bsize);
 }
-LPROC_SEQ_FOPS_RO(ll_blksize);
+LUSTRE_RO_ATTR(blocksize);
 
 static int ll_stat_blksize_seq_show(struct seq_file *m, void *v)
 {
@@ -1170,8 +1172,6 @@ struct lprocfs_vars lprocfs_llite_obd_vars[] = {
          .fops =       &ll_fstype_fops                         },
        { .name =       "site",
          .fops =       &ll_site_stats_fops                     },
-       { .name =       "blocksize",
-         .fops =       &ll_blksize_fops                        },
        { .name =       "stat_blocksize",
          .fops =       &ll_stat_blksize_fops                   },
        { .name =       "kbytestotal",
@@ -1236,6 +1236,7 @@ struct lprocfs_vars lprocfs_llite_obd_vars[] = {
 #define MAX_STRING_SIZE 128
 
 static struct attribute *llite_attrs[] = {
+       &lustre_attr_blocksize.attr,
        &lustre_attr_statahead_running_max.attr,
        NULL,
 };