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| author | Trond Myklebust <trondmy@gmail.com> | 2020-01-14 12:02:44 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2020-02-06 11:22:55 -0500 |
| commit | 689827cd5bfe89e4900db7e1c0c713083a76d04c (patch) | |
| tree | 278059c769f2fa8e2fa318d37c075a33fc347097 /fs/nfsd/trace.h | |
| parent | c19285596de699e4602f9c89785e6b8c29422286 (diff) | |
| download | lwn-689827cd5bfe89e4900db7e1c0c713083a76d04c.tar.gz lwn-689827cd5bfe89e4900db7e1c0c713083a76d04c.zip | |
nfsd: convert file cache to use over/underflow safe refcount
Use the 'refcount_t' type instead of 'atomic_t' for improved
refcounting safety.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/trace.h')
| -rw-r--r-- | fs/nfsd/trace.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h index 17ecef404e5b..06dd0d337049 100644 --- a/fs/nfsd/trace.h +++ b/fs/nfsd/trace.h @@ -201,7 +201,7 @@ DECLARE_EVENT_CLASS(nfsd_file_class, TP_fast_assign( __entry->nf_hashval = nf->nf_hashval; __entry->nf_inode = nf->nf_inode; - __entry->nf_ref = atomic_read(&nf->nf_ref); + __entry->nf_ref = refcount_read(&nf->nf_ref); __entry->nf_flags = nf->nf_flags; __entry->nf_may = nf->nf_may; __entry->nf_file = nf->nf_file; @@ -250,7 +250,7 @@ TRACE_EVENT(nfsd_file_acquire, __entry->hash = hash; __entry->inode = inode; __entry->may_flags = may_flags; - __entry->nf_ref = nf ? atomic_read(&nf->nf_ref) : 0; + __entry->nf_ref = nf ? refcount_read(&nf->nf_ref) : 0; __entry->nf_flags = nf ? nf->nf_flags : 0; __entry->nf_may = nf ? nf->nf_may : 0; __entry->nf_file = nf ? nf->nf_file : NULL; |