Trace new locations when hitting a referral. Signed-off-by: Chen Hanxiao <chenhx.fnst@xxxxxxxxxxx> --- fs/nfs/nfs4namespace.c | 3 +++ fs/nfs/nfs4trace.h | 25 +++++++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 9a98595bb160..fca9fb801bc2 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -24,6 +24,7 @@ #include "nfs4_fs.h" #include "nfs.h" #include "dns_resolve.h" +#include "nfs4trace.h" #define NFSDBG_FACILITY NFSDBG_VFS @@ -351,6 +352,8 @@ static int try_location(struct fs_context *fc, p += ctx->nfs_server.export_path_len; *p = 0; + trace_nfs4_referral_location(ctx->nfs_server.hostname, + ctx->nfs_server.export_path); ret = nfs4_get_referral_tree(fc); if (ret == 0) return 0; diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index 10985a4b8259..165c4dc7b5c7 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -2604,6 +2604,31 @@ DEFINE_NFS4_XATTR_EVENT(nfs4_setxattr); DEFINE_NFS4_XATTR_EVENT(nfs4_removexattr); DEFINE_NFS4_INODE_EVENT(nfs4_listxattr); + +TRACE_EVENT(nfs4_referral_location, + TP_PROTO( + const char *hostname, + const char *path + ), + + TP_ARGS(hostname, path), + + TP_STRUCT__entry( + __string(referral_hostname, hostname) + __string(referral_path, path) + ), + + TP_fast_assign( + __assign_str(referral_hostname, hostname)e + __assign_str(referral_path, path); + ), + + TP_printk( + "referral_host=%s referral_path=%s", + __get_str(referral_hostname), + __get_str(referral_path) + ) +); #endif /* CONFIG_NFS_V4_2 */ #endif /* CONFIG_NFS_V4_1 */ -- 2.39.1
