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

Move checksum_pages 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/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index 2aa2335..1b42304 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -407,7 +407,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
        if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
                /* OBD_CONNECT_CKSUM should always be set, even if checksums are
                 * disabled by default, because it can still be enabled on the
-                * fly via /proc. As a consequence, we still need to come to an
+                * fly via /sys. As a consequence, we still need to come to an
                 * agreement on the supported algorithms at connect time */
                data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
 

diff --git a/drivers/staging/lustre/lustre/llite/lproc_llite.c b/drivers/staging/lustre/lustre/llite/lproc_llite.c
index 81f7af3..99d96d7 100644 (file)
--- a/drivers/staging/lustre/lustre/llite/lproc_llite.c
+++ b/drivers/staging/lustre/lustre/llite/lproc_llite.c
@@ -480,28 +480,30 @@ out:
 }
 LPROC_SEQ_FOPS(ll_max_cached_mb);
 
-static int ll_checksum_seq_show(struct seq_file *m, void *v)
+static ssize_t checksum_pages_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_CHECKSUM) ? 1 : 0);
-       return 0;
+       return sprintf(buf, "%u\n", (sbi->ll_flags & LL_SBI_CHECKSUM) ? 1 : 0);
 }
 
-static ssize_t ll_checksum_seq_write(struct file *file,
-                                    const char __user *buffer,
-                                    size_t count, loff_t *off)
+static ssize_t checksum_pages_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;
 
        if (!sbi->ll_dt_exp)
                /* Not set up yet */
                return -EAGAIN;
 
-       rc = lprocfs_write_helper(buffer, count, &val);
+       rc = kstrtoul(buffer, 10, &val);
        if (rc)
                return rc;
        if (val)
@@ -516,7 +518,7 @@ static ssize_t ll_checksum_seq_write(struct file *file,
 
        return count;
 }
-LPROC_SEQ_FOPS(ll_checksum);
+LUSTRE_RW_ATTR(checksum_pages);
 
 static int ll_max_rw_chunk_seq_show(struct seq_file *m, void *v)
 {
@@ -850,7 +852,6 @@ static struct lprocfs_vars lprocfs_llite_obd_vars[] = {
        { "site",         &ll_site_stats_fops,    NULL, 0 },
        /* { "filegroups",   lprocfs_rd_filegroups,  0, 0 }, */
        { "max_cached_mb",    &ll_max_cached_mb_fops, NULL },
-       { "checksum_pages",   &ll_checksum_fops, NULL },
        { "max_rw_chunk",     &ll_max_rw_chunk_fops, NULL },
        { "stats_track_pid",  &ll_track_pid_fops, NULL },
        { "stats_track_ppid", &ll_track_ppid_fops, NULL },
@@ -883,6 +884,7 @@ static struct attribute *llite_attrs[] = {
        &lustre_attr_max_read_ahead_mb.attr,
        &lustre_attr_max_read_ahead_per_file_mb.attr,
        &lustre_attr_max_read_ahead_whole_mb.attr,
+       &lustre_attr_checksum_pages.attr,
        NULL,
 };
 

diff --git a/drivers/staging/lustre/sysfs-fs-lustre b/drivers/staging/lustre/sysfs-fs-lustre
index 3151465..03a4dc6 100644 (file)
--- a/drivers/staging/lustre/sysfs-fs-lustre
+++ b/drivers/staging/lustre/sysfs-fs-lustre
@@ -117,3 +117,10 @@ Contact:   "Oleg Drokin" <oleg.drokin@intel.com>
 Description:
                For small reads, how many megabytes to actually request from
                the server as initial read-ahead.
+
+What:          /sys/fs/lustre/llite/<fsname>-<uuid>/checksum_pages
+Date:          May 2015
+Contact:       "Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+               Enables or disables per-page checksum at llite layer, before
+               the pages are actually given to lower level for network transfer