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nfs: print fileid in lookup tracepoints

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With this we can see the dentry -> inode linkage that's being
revalidated. A fileid of 0 means "negative dentry".

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Jeff Layton 2023-11-03 06:10:51 -04:00 committed by Anna Schumaker
parent 310b1f89ea
commit f6e70c59ed
1 changed files with 10 additions and 4 deletions
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14
fs/nfs/nfstrace.h
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@ -400,6 +400,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event,
__field(unsigned long, flags)
__field(dev_t, dev)
__field(u64, dir)
__field(u64, fileid)
__string(name, dentry->d_name.name)
),
@ -407,16 +408,18 @@ DECLARE_EVENT_CLASS(nfs_lookup_event,
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
__entry->fileid = d_is_negative(dentry) ? 0 : NFS_FILEID(d_inode(dentry));
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"flags=0x%lx (%s) name=%02x:%02x:%llu/%s",
"flags=0x%lx (%s) name=%02x:%02x:%llu/%s fileid=%llu",
__entry->flags,
show_fs_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
__get_str(name),
__entry->fileid
)
);
@ -444,6 +447,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done,
__field(unsigned long, flags)
__field(dev_t, dev)
__field(u64, dir)
__field(u64, fileid)
__string(name, dentry->d_name.name)
),
@ -452,17 +456,19 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done,
__entry->dir = NFS_FILEID(dir);
__entry->error = error < 0 ? -error : 0;
__entry->flags = flags;
__entry->fileid = d_is_negative(dentry) ? 0 : NFS_FILEID(d_inode(dentry));
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s",
"error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s fileid=%llu",
-__entry->error, show_nfs_status(__entry->error),
__entry->flags,
show_fs_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
__get_str(name),
__entry->fileid
)
);