From 06ecc6cbf7a60cd5abd9fd2bda8ae69b395c2be3 Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Thu, 1 Nov 2012 10:17:15 -0500 Subject: [PATCH] rbd: define and use rbd_warn() Define a new function rbd_warn() that produces a boilerplate warning message, identifying in the resulting message the affected rbd device in the best way available. Use it in a few places that now use pr_warning(). Signed-off-by: Alex Elder Reviewed-by: Dan Mick Reviewed-by: Josh Durgin --- drivers/block/rbd.c | 43 +++++++++++++++++++++++++++++++++---------- 1 file changed, 33 insertions(+), 10 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index d97611e2b4ee..635b81d0ebdb 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -294,6 +294,33 @@ static struct device rbd_root_dev = { .release = rbd_root_dev_release, }; +static __printf(2, 3) +void rbd_warn(struct rbd_device *rbd_dev, const char *fmt, ...) +{ + struct va_format vaf; + va_list args; + + va_start(args, fmt); + vaf.fmt = fmt; + vaf.va = &args; + + if (!rbd_dev) + printk(KERN_WARNING "%s: %pV\n", RBD_DRV_NAME, &vaf); + else if (rbd_dev->disk) + printk(KERN_WARNING "%s: %s: %pV\n", + RBD_DRV_NAME, rbd_dev->disk->disk_name, &vaf); + else if (rbd_dev->spec && rbd_dev->spec->image_name) + printk(KERN_WARNING "%s: image %s: %pV\n", + RBD_DRV_NAME, rbd_dev->spec->image_name, &vaf); + else if (rbd_dev->spec && rbd_dev->spec->image_id) + printk(KERN_WARNING "%s: id %s: %pV\n", + RBD_DRV_NAME, rbd_dev->spec->image_id, &vaf); + else /* punt */ + printk(KERN_WARNING "%s: rbd_dev %p: %pV\n", + RBD_DRV_NAME, rbd_dev, &vaf); + va_end(args); +} + #ifdef RBD_DEBUG #define rbd_assert(expr) \ if (unlikely(!(expr))) { \ @@ -1403,8 +1430,8 @@ static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data) (unsigned int) opcode); rc = rbd_dev_refresh(rbd_dev, &hver); if (rc) - pr_warning(RBD_DRV_NAME "%d got notification but failed to " - " update snaps: %d\n", rbd_dev->major, rc); + rbd_warn(rbd_dev, "got notification but failed to " + " update snaps: %d\n", rc); rbd_req_sync_notify_ack(rbd_dev, hver, notify_id); } @@ -1767,15 +1794,13 @@ rbd_dev_v1_header_read(struct rbd_device *rbd_dev, u64 *version) goto out_err; if (WARN_ON((size_t) ret < size)) { ret = -ENXIO; - pr_warning("short header read for image %s" - " (want %zd got %d)\n", - rbd_dev->spec->image_name, size, ret); + rbd_warn(rbd_dev, "short header read (want %zd got %d)", + size, ret); goto out_err; } if (!rbd_dev_ondisk_valid(ondisk)) { ret = -ENXIO; - pr_warning("invalid header for image %s\n", - rbd_dev->spec->image_name); + rbd_warn(rbd_dev, "invalid header"); goto out_err; } @@ -2630,9 +2655,7 @@ static int rbd_dev_probe_update_spec(struct rbd_device *rbd_dev) if (name) rbd_dev->spec->image_name = (char *) name; else - pr_warning(RBD_DRV_NAME "%d " - "unable to get image name for image id %s\n", - rbd_dev->major, rbd_dev->spec->image_id); + rbd_warn(rbd_dev, "unable to get image name"); /* Look up the snapshot name. */ -- 2.39.5