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| author |   Matteo Croce <mcroce@microsoft.com> | 2021-07-13 01:05:26 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2021-08-02 13:37:28 -0600 |
| commit | 87eb710747126ca6606f064deef93d045486ebbe (patch) | |
| tree | 7202f45e52b131a914705c85cf50ff93bd565784 | |
| parent | block: add disk sequence number (diff) | |
| download | linux-dev-87eb710747126ca6606f064deef93d045486ebbe.tar.xz linux-dev-87eb710747126ca6606f064deef93d045486ebbe.zip | |
block: export the diskseq in uevents
Export the newly introduced diskseq in uevents:
$ udevadm info /sys/class/block/* |grep -e DEVNAME -e DISKSEQ
E: DEVNAME=/dev/loop0
E: DISKSEQ=1
E: DEVNAME=/dev/loop1
E: DISKSEQ=2
E: DEVNAME=/dev/loop2
E: DISKSEQ=3
E: DEVNAME=/dev/loop3
E: DISKSEQ=4
E: DEVNAME=/dev/loop4
E: DISKSEQ=5
E: DEVNAME=/dev/loop5
E: DISKSEQ=6
E: DEVNAME=/dev/loop6
E: DISKSEQ=7
E: DEVNAME=/dev/loop7
E: DISKSEQ=8
E: DEVNAME=/dev/nvme0n1
E: DISKSEQ=9
E: DEVNAME=/dev/nvme0n1p1
E: DISKSEQ=9
E: DEVNAME=/dev/nvme0n1p2
E: DISKSEQ=9
E: DEVNAME=/dev/nvme0n1p3
E: DISKSEQ=9
E: DEVNAME=/dev/nvme0n1p4
E: DISKSEQ=9
E: DEVNAME=/dev/nvme0n1p5
E: DISKSEQ=9
E: DEVNAME=/dev/sda
E: DISKSEQ=10
E: DEVNAME=/dev/sda1
E: DISKSEQ=10
E: DEVNAME=/dev/sda2
E: DISKSEQ=10
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matteo Croce <mcroce@microsoft.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Link: https://lore.kernel.org/r/20210712230530.29323-3-mcroce@linux.microsoft.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/genhd.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index ceb08af72c1a..e1b2f898d790 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1092,8 +1092,17 @@ static void disk_release(struct device *dev) blk_put_queue(disk->queue); iput(disk->part0->bd_inode); /* frees the disk */ } + +static int block_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct gendisk *disk = dev_to_disk(dev); + + return add_uevent_var(env, "DISKSEQ=%llu", disk->diskseq); +} + struct class block_class = { .name = "block", + .dev_uevent = block_uevent, }; static char *block_devnode(struct device *dev, umode_t *mode, |