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authorDavid Howells <dhowells@redhat.com>2021-10-21 11:08:54 +0300
committerDavid Howells <dhowells@redhat.com>2022-01-07 16:41:07 +0300
commit1493bf74bcf2434a840eacef60c0f56966faa11a (patch)
tree0c3bedae3dc265a28d168121918bc7e4f11f9333 /fs/cachefiles/internal.h
parentecf5a6ce15f90d1fe6bc326c720d21fc0e73fc88 (diff)
downloadlinux-1493bf74bcf2434a840eacef60c0f56966faa11a.tar.xz
cachefiles: Add cache error reporting macro
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@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> cc: linux-cachefs@redhat.com Link: https://lore.kernel.org/r/163819626562.215744.1503690975344731661.stgit@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/163906927235.143852.13694625647880837563.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/163967137158.1823006.2065038830569321335.stgit@warthog.procyon.org.uk/ # v3 Link: https://lore.kernel.org/r/164021536053.640689.5306822604644352548.stgit@warthog.procyon.org.uk/ # v4
Diffstat (limited to 'fs/cachefiles/internal.h')
-rw-r--r--fs/cachefiles/internal.h11
1 files changed, 11 insertions, 0 deletions
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