* [PATCH] btrfs: add fs_info generation to sysfs
@ 2020-10-07 7:20 Anand Jain
2020-10-07 7:50 ` Nikolay Borisov
2020-10-14 11:35 ` David Sterba
0 siblings, 2 replies; 4+ messages in thread
From: Anand Jain @ 2020-10-07 7:20 UTC (permalink / raw)
To: linux-btrfs; +Cc: dsterba, Anand Jain
Matching with the information that's available from the ioctl
BTRFS_IOC_FS_INFO, this patch adds generation to the sysfs.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
fs/btrfs/sysfs.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 279d9262b676..8424f5d0e5ed 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -854,6 +854,15 @@ static ssize_t btrfs_exclusive_operation_show(struct kobject *kobj,
}
BTRFS_ATTR(, exclusive_operation, btrfs_exclusive_operation_show);
+static ssize_t btrfs_generation_show(struct kobject *kobj,
+ struct kobj_attribute *a, char *buf)
+{
+ struct btrfs_fs_info *fs_info = to_fs_info(kobj);
+
+ return scnprintf(buf, PAGE_SIZE, "%llu\n", fs_info->generation);
+}
+BTRFS_ATTR(, generation, btrfs_generation_show);
+
static const struct attribute *btrfs_attrs[] = {
BTRFS_ATTR_PTR(, label),
BTRFS_ATTR_PTR(, nodesize),
@@ -863,6 +872,7 @@ static const struct attribute *btrfs_attrs[] = {
BTRFS_ATTR_PTR(, metadata_uuid),
BTRFS_ATTR_PTR(, checksum),
BTRFS_ATTR_PTR(, exclusive_operation),
+ BTRFS_ATTR_PTR(, generation),
NULL,
};
--
2.25.1
^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] btrfs: add fs_info generation to sysfs
2020-10-07 7:20 [PATCH] btrfs: add fs_info generation to sysfs Anand Jain
@ 2020-10-07 7:50 ` Nikolay Borisov
2020-10-12 15:51 ` David Sterba
2020-10-14 11:35 ` David Sterba
1 sibling, 1 reply; 4+ messages in thread
From: Nikolay Borisov @ 2020-10-07 7:50 UTC (permalink / raw)
To: Anand Jain, linux-btrfs; +Cc: dsterba
On 7.10.20 г. 10:20 ч., Anand Jain wrote:
> Matching with the information that's available from the ioctl
> BTRFS_IOC_FS_INFO, this patch adds generation to the sysfs.
>
> Signed-off-by: Anand Jain <anand.jain@oracle.com>
What problem are you trying to solve?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] btrfs: add fs_info generation to sysfs
2020-10-07 7:50 ` Nikolay Borisov
@ 2020-10-12 15:51 ` David Sterba
0 siblings, 0 replies; 4+ messages in thread
From: David Sterba @ 2020-10-12 15:51 UTC (permalink / raw)
To: Nikolay Borisov; +Cc: Anand Jain, linux-btrfs, dsterba
On Wed, Oct 07, 2020 at 10:50:27AM +0300, Nikolay Borisov wrote:
>
>
> On 7.10.20 г. 10:20 ч., Anand Jain wrote:
> > Matching with the information that's available from the ioctl
> > BTRFS_IOC_FS_INFO, this patch adds generation to the sysfs.
> >
> > Signed-off-by: Anand Jain <anand.jain@oracle.com>
>
> What problem are you trying to solve?
Parity of FS_INFO ioctl and sysfs exports.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] btrfs: add fs_info generation to sysfs
2020-10-07 7:20 [PATCH] btrfs: add fs_info generation to sysfs Anand Jain
2020-10-07 7:50 ` Nikolay Borisov
@ 2020-10-14 11:35 ` David Sterba
1 sibling, 0 replies; 4+ messages in thread
From: David Sterba @ 2020-10-14 11:35 UTC (permalink / raw)
To: Anand Jain; +Cc: linux-btrfs, dsterba
On Wed, Oct 07, 2020 at 03:20:03PM +0800, Anand Jain wrote:
> Matching with the information that's available from the ioctl
> BTRFS_IOC_FS_INFO, this patch adds generation to the sysfs.
>
> Signed-off-by: Anand Jain <anand.jain@oracle.com>
Added to misc-next, thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2020-10-07 7:20 [PATCH] btrfs: add fs_info generation to sysfs Anand Jain
2020-10-07 7:50 ` Nikolay Borisov
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2020-10-14 11:35 ` David Sterba
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