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[v2,33/53] cachefiles: Add I/O error reporting macros

Message ID 163492960262.1038219.8002050280041934104.stgit@warthog.procyon.org.uk (mailing list archive)
State New, archived
Headers show
Series fscache: Rewrite index API and management system | expand

Commit Message

David Howells Oct. 22, 2021, 7:06 p.m. UTC 
Add a couple of macros to report I/O errors and to tell fscache that the
cache is in trouble.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cachefs@redhat.com
---

 fs/cachefiles/internal.h |   20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
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Patch

diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h
index d615213a2fa1..230a1a2bf01d 100644
--- a/fs/cachefiles/internal.h
+++ b/fs/cachefiles/internal.h
@@ -153,6 +153,26 @@  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)
+
+#define cachefiles_io_error_obj(object, FMT, ...)			\
+do {									\
+	struct cachefiles_cache *___cache;				\
+									\
+	___cache = (object)->volume->cache;				\
+	cachefiles_io_error(___cache, FMT " [o=%08x]", ##__VA_ARGS__,	\
+			    (object)->debug_id);			\
+} while (0)
+
 
 /*
  * debug tracing