diff options
Diffstat (limited to 'fs/fscache/internal.h')
| -rw-r--r-- | fs/fscache/internal.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index c27e2db3004e..5f905a499306 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -342,6 +342,27 @@ void fscache_put_context(struct fscache_cookie *cookie, void *context) cookie->def->put_context(cookie->netfs_data, context); } +/* + * Update the auxiliary data on a cookie. + */ +static inline +void fscache_update_aux(struct fscache_cookie *cookie, const void *aux_data) +{ + void *p; + + if (!aux_data) + return; + if (cookie->aux_len <= sizeof(cookie->inline_aux)) + p = cookie->inline_aux; + else + p = cookie->aux; + + if (memcmp(p, aux_data, cookie->aux_len) != 0) { + memcpy(p, aux_data, cookie->aux_len); + set_bit(FSCACHE_COOKIE_AUX_UPDATED, &cookie->flags); + } +} + /*****************************************************************************/ /* * debug tracing |