[PATCH v3 34/68] cachefiles: Add cache error reporting macro

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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
Link: https://lore.kernel.org/r/163906927235.143852.13694625647880837563.stgit@xxxxxxxxxxxxxxxxxxxxxx/ # v2
---

 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





[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [NTFS 3]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [NTFS 3]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux