Add a macro to report a cache I/O error and to tell fscache that the cache is in trouble. Also add a pointer to the fscache cache cookie from the cachefiles_cache struct as we need that to pass to fscache_io_error(). Signed-off-by: David Howells <dhowells@xxxxxxxxxx> cc: linux-cachefs@xxxxxxxxxx Link: https://lore.kernel.org/r/163819626562.215744.1503690975344731661.stgit@xxxxxxxxxxxxxxxxxxxxxx/ # v1 --- fs/cachefiles/internal.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index b51146a29aca..b2adcb59b4ce 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -30,6 +30,7 @@ struct cachefiles_object { * Cache files cache definition */ struct cachefiles_cache { + struct fscache_cache *cache; /* Cache cookie */ struct vfsmount *mnt; /* mountpoint holding the cache */ struct file *cachefilesd; /* manager daemon handle */ const struct cred *cache_cred; /* security override for accessing cache */ @@ -103,6 +104,16 @@ static inline int cachefiles_inject_remove_error(void) return cachefiles_error_injection_state & 2 ? -EIO : 0; } +/* + * Error handling + */ +#define cachefiles_io_error(___cache, FMT, ...) \ +do { \ + pr_err("I/O Error: " FMT"\n", ##__VA_ARGS__); \ + fscache_io_error((___cache)->cache); \ + set_bit(CACHEFILES_DEAD, &(___cache)->flags); \ +} while (0) + /* * Debug tracing
