xfs_io: add buf_lru_ref tag to inject table

And catch it at build time if we get out of sync again.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/include/xfs.h b/include/xfs.h
index 9f0f11be405648d1dca2eeb0a0fea5c4cbd9d1c5..a40ca0cc943a1f76303ee95d13720163626906b7 100644 (file)
--- a/include/xfs.h
+++ b/include/xfs.h
@@ -64,6 +64,10 @@ extern int xfs_assert_largefile[sizeof(off_t)-8];
 #define __packed __attribute__((packed))
 #endif
 
+#ifndef BUILD_BUG_ON
+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+#endif
+
 #include <xfs/xfs_types.h>
 #include <xfs/xfs_fs.h>
 

diff --git a/io/inject.c b/io/inject.c
index 9d0cf62ba127fccff8ed829ef6338586286bbcd5..fc3cf25639cc2fc1803bb89fa95cee2f6edb3a1e 100644 (file)
--- a/io/inject.c
+++ b/io/inject.c
@@ -30,7 +30,7 @@ error_tag(char *name)
        static struct {
                int     tag;
                char    *name;
-       } *e, eflags[XFS_ERRTAG_MAX + 1] = {
+       } *e, eflags[] = {
                { XFS_ERRTAG_NOERROR,                   "noerror" },
                { XFS_ERRTAG_IFLUSH_1,                  "iflush1" },
                { XFS_ERRTAG_IFLUSH_2,                  "iflush2" },
@@ -62,10 +62,14 @@ error_tag(char *name)
                { XFS_ERRTAG_DROP_WRITES,               "drop_writes" },
                { XFS_ERRTAG_LOG_BAD_CRC,               "log_bad_crc" },
                { XFS_ERRTAG_LOG_ITEM_PIN,              "log_item_pin" },
+               { XFS_ERRTAG_BUF_LRU_REF,               "buf_lru_ref" },
                { XFS_ERRTAG_MAX,                       NULL }
        };
        int     count;
 
+       /* If this fails make sure every tag is defined in the array above */
+       BUILD_BUG_ON(sizeof(eflags) != (XFS_ERRTAG_MAX + 1) * sizeof(*e));
+
        /* Search for a name */
        if (name) {
                for (e = eflags; e->name; e++)