staging/lustre/llite: move /proc/fs/lustre/llite/lazystatfs to sysfs

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

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/lustre/llite/lproc_llite.c b/drivers/staging/lustre/lustre/llite/lproc_llite.c
index aa0e12b0a69b9d08684f42fbc660a645f5c6fa59..03d41278c259f3181606badac83c181cf9a27997 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/lproc_llite.c
+++ b/drivers/staging/lustre/lustre/llite/lproc_llite.c
@@ -686,24 +686,27 @@ static int ll_statahead_stats_seq_show(struct seq_file *m, void *v)
 }
 LPROC_SEQ_FOPS_RO(ll_statahead_stats);
 
-static int ll_lazystatfs_seq_show(struct seq_file *m, void *v)
+static ssize_t lazystatfs_show(struct kobject *kobj,
+                              struct attribute *attr,
+                              char *buf)
 {
-       struct super_block *sb = m->private;
-       struct ll_sb_info *sbi = ll_s2sbi(sb);
+       struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
+                                             ll_kobj);
 
-       seq_printf(m, "%u\n", sbi->ll_flags & LL_SBI_LAZYSTATFS ? 1 : 0);
-       return 0;
+       return sprintf(buf, "%u\n", sbi->ll_flags & LL_SBI_LAZYSTATFS ? 1 : 0);
 }
 
-static ssize_t ll_lazystatfs_seq_write(struct file *file,
-                                      const char __user *buffer,
-                                      size_t count, loff_t *off)
+static ssize_t lazystatfs_store(struct kobject *kobj,
+                               struct attribute *attr,
+                               const char *buffer,
+                               size_t count)
 {
-       struct super_block *sb = ((struct seq_file *)file->private_data)->private;
-       struct ll_sb_info *sbi = ll_s2sbi(sb);
-       int val, rc;
+       struct ll_sb_info *sbi = container_of(kobj, struct ll_sb_info,
+                                             ll_kobj);
+       int rc;
+       unsigned long val;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = kstrtoul(buffer, 10, &val);
        if (rc)
                return rc;
 
@@ -714,7 +717,7 @@ static ssize_t ll_lazystatfs_seq_write(struct file *file,
 
        return count;
 }
-LPROC_SEQ_FOPS(ll_lazystatfs);
+LUSTRE_RW_ATTR(lazystatfs);
 
 static int ll_max_easize_seq_show(struct seq_file *m, void *v)
 {
@@ -845,7 +848,6 @@ static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
        /* { "filegroups",   lprocfs_rd_filegroups,  0, 0 }, */
        { "max_cached_mb",    &ll_max_cached_mb_fops, NULL },
        { "statahead_stats",  &ll_statahead_stats_fops, NULL, 0 },
-       { "lazystatfs",       &ll_lazystatfs_fops, NULL },
        { "max_easize",       &ll_max_easize_fops, NULL, 0 },
        { "default_easize",   &ll_default_easize_fops, NULL, 0 },
        { "max_cookiesize",   &ll_max_cookiesize_fops, NULL, 0 },
@@ -876,6 +878,7 @@ static struct attribute *llite_attrs[] = {
        &lustre_attr_stats_track_gid.attr,
        &lustre_attr_statahead_max.attr,
        &lustre_attr_statahead_agl.attr,
+       &lustre_attr_lazystatfs.attr,
        NULL,
 };
 

diff --git a/drivers/staging/lustre/sysfs-fs-lustre b/drivers/staging/lustre/sysfs-fs-lustre
index 2920eadbb844399738ddb260444e53ebe5a86307..184b387b787ec1eba775c9a31684c16febf5da6c 100644 (file)
--- a/drivers/staging/lustre/sysfs-fs-lustre
+++ b/drivers/staging/lustre/sysfs-fs-lustre
@@ -161,3 +161,11 @@ Description:
                from OSTs in parallel with MDS during statahead) should be
                enabled or disabled.
                0 to disable, 1 to enable.
+
+What:          /sys/fs/lustre/llite/<fsname>-<uuid>/lazystatfs
+Date:          May 2015
+Contact:       "Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+               Controls statfs(2) behaviour in the face of down servers.
+               If 0, always wait for all servers to come online,
+               if 1, ignote inactive servers.