7 files changed, 96 insertions, 114 deletions

diff --git a/fs/xfs/linux-2.6/xfs_sysctl.c b/fs/xfs/linux-2.6/xfs_sysctl.c
index 7bb5092d6ae4..ee3cee097e7e 100644
--- a/fs/xfs/linux-2.6/xfs_sysctl.c
+++ b/fs/xfs/linux-2.6/xfs_sysctl.c
@@ -18,6 +18,7 @@
 #include "xfs.h"
 #include <linux/sysctl.h>
 #include <linux/proc_fs.h>
+#include "xfs_error.h"
 
 static struct ctl_table_header *xfs_table_header;
 
@@ -51,6 +52,26 @@ xfs_stats_clear_proc_handler(
 
         return ret;
 }
+
+STATIC int
+xfs_panic_mask_proc_handler(
+        ctl_table       *ctl,
+        int             write,
+        void            __user *buffer,
+        size_t          *lenp,
+        loff_t          *ppos)
+{
+        int             ret, *valp = ctl->data;
+
+        ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
+        if (!ret && write) {
+                xfs_panic_mask = *valp;
+#ifdef DEBUG
+                xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES);
+#endif
+        }
+        return ret;
+}
 #endif /* CONFIG_PROC_FS */
 
 static ctl_table xfs_table[] = {
@@ -77,7 +98,7 @@ static ctl_table xfs_table[] = {
                 .data           = &xfs_params.panic_mask.val,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
-                .proc_handler   = proc_dointvec_minmax,
+                .proc_handler   = xfs_panic_mask_proc_handler,
                 .extra1         = &xfs_params.panic_mask.min,
                 .extra2         = &xfs_params.panic_mask.max
         },
diff --git a/fs/xfs/support/debug.c b/fs/xfs/support/debug.c
index 86162e5f9a21..e6cf955ec0fc 100644
--- a/fs/xfs/support/debug.c
+++ b/fs/xfs/support/debug.c
@@ -25,80 +25,71 @@
 #include "xfs_mount.h"
 #include "xfs_error.h"
 
-static char             message[1024];  /* keep it off the stack */
-static DEFINE_SPINLOCK(xfs_err_lock);
-
-/* Translate from CE_FOO to KERN_FOO, err_level(CE_FOO) == KERN_FOO */
-#define XFS_MAX_ERR_LEVEL       7
-#define XFS_ERR_MASK            ((1 << 3) - 1)
-static const char * const       err_level[XFS_MAX_ERR_LEVEL+1] =
-                                        {KERN_EMERG, KERN_ALERT, KERN_CRIT,
-                                         KERN_ERR, KERN_WARNING, KERN_NOTICE,
-                                         KERN_INFO, KERN_DEBUG};
-
 void
-cmn_err(register int level, char *fmt, ...)
+cmn_err(
+        const char      *lvl,
+        const char      *fmt,
+        ...)
 {
-        char    *fp = fmt;
-        int     len;
-        ulong   flags;
-        va_list ap;
-
-        level &= XFS_ERR_MASK;
-        if (level > XFS_MAX_ERR_LEVEL)
-                level = XFS_MAX_ERR_LEVEL;
-        spin_lock_irqsave(&xfs_err_lock,flags);
-        va_start(ap, fmt);
-        if (*fmt == '!') fp++;
-        len = vsnprintf(message, sizeof(message), fp, ap);
-        if (len >= sizeof(message))
-                len = sizeof(message) - 1;
-        if (message[len-1] == '\n')
-                message[len-1] = 0;
-        printk("%s%s\n", err_level[level], message);
-        va_end(ap);
-        spin_unlock_irqrestore(&xfs_err_lock,flags);
-        BUG_ON(level == CE_PANIC);
+        struct va_format vaf;
+        va_list         args;
+
+        va_start(args, fmt);
+        vaf.fmt = fmt;
+        vaf.va = &args;
+
+        printk("%s%pV", lvl, &vaf);
+        va_end(args);
+
+        BUG_ON(strncmp(lvl, KERN_EMERG, strlen(KERN_EMERG)) == 0);
 }
 
 void
-xfs_fs_vcmn_err(
-        int                     level,
+xfs_fs_cmn_err(
+        const char              *lvl,
         struct xfs_mount        *mp,
-        char                    *fmt,
-        va_list                 ap)
+        const char              *fmt,
+        ...)
 {
-        unsigned long           flags;
-        int                     len = 0;
+        struct va_format        vaf;
+        va_list                 args;
 
-        level &= XFS_ERR_MASK;
-        if (level > XFS_MAX_ERR_LEVEL)
-                level = XFS_MAX_ERR_LEVEL;
+        va_start(args, fmt);
+        vaf.fmt = fmt;
+        vaf.va = &args;
 
-        spin_lock_irqsave(&xfs_err_lock,flags);
+        printk("%sFilesystem %s: %pV", lvl, mp->m_fsname, &vaf);
+        va_end(args);
 
-        if (mp) {
-                len = sprintf(message, "Filesystem \"%s\": ", mp->m_fsname);
+        BUG_ON(strncmp(lvl, KERN_EMERG, strlen(KERN_EMERG)) == 0);
+}
+
+/* All callers to xfs_cmn_err use CE_ALERT, so don't bother testing lvl */
+void
+xfs_cmn_err(
+        int                     panic_tag,
+        const char              *lvl,
+        struct xfs_mount        *mp,
+        const char              *fmt,
+        ...)
+{
+        struct va_format        vaf;
+        va_list                 args;
+        int                     panic = 0;
 
-                /*
-                 * Skip the printk if we can't print anything useful
-                 * due to an over-long device name.
-                 */
-                if (len >= sizeof(message))
-                        goto out;
+        if (xfs_panic_mask && (xfs_panic_mask & panic_tag)) {
+                printk(KERN_ALERT "XFS: Transforming an alert into a BUG.");
+                panic = 1;
         }
 
-        len = vsnprintf(message + len, sizeof(message) - len, fmt, ap);
-        if (len >= sizeof(message))
-                len = sizeof(message) - 1;
-        if (message[len-1] == '\n')
-                message[len-1] = 0;
+        va_start(args, fmt);
+        vaf.fmt = fmt;
+        vaf.va = &args;
 
-        printk("%s%s\n", err_level[level], message);
- out:
-        spin_unlock_irqrestore(&xfs_err_lock,flags);
+        printk(KERN_ALERT "Filesystem %s: %pV", mp->m_fsname, &vaf);
+        va_end(args);
 
-        BUG_ON(level == CE_PANIC);
+        BUG_ON(panic);
 }
 
 void
diff --git a/fs/xfs/support/debug.h b/fs/xfs/support/debug.h
index d2d20462fd4f..05699f67d475 100644
--- a/fs/xfs/support/debug.h
+++ b/fs/xfs/support/debug.h
@@ -20,15 +20,22 @@
 
 #include <stdarg.h>
 
-#define CE_DEBUG        7               /* debug        */
-#define CE_CONT         6               /* continuation */
-#define CE_NOTE         5               /* notice       */
-#define CE_WARN         4               /* warning      */
-#define CE_ALERT        1               /* alert        */
-#define CE_PANIC        0               /* panic        */
-
-extern void cmn_err(int, char *, ...)
-        __attribute__ ((format (printf, 2, 3)));
+struct xfs_mount;
+
+#define CE_DEBUG        KERN_DEBUG
+#define CE_CONT         KERN_INFO
+#define CE_NOTE         KERN_NOTICE
+#define CE_WARN         KERN_WARNING
+#define CE_ALERT        KERN_ALERT
+#define CE_PANIC        KERN_EMERG
+
+void cmn_err(const char *lvl, const char *fmt, ...)
+                __attribute__ ((format (printf, 2, 3)));
+void xfs_fs_cmn_err( const char *lvl, struct xfs_mount *mp,
+                const char *fmt, ...) __attribute__ ((format (printf, 3, 4)));
+void xfs_cmn_err( int panic_tag, const char *lvl, struct xfs_mount *mp,
+                const char *fmt, ...) __attribute__ ((format (printf, 4, 5)));
+
 extern void assfail(char *expr, char *f, int l);
 
 #define ASSERT_ALWAYS(expr)     \
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index c78cc6a3d87c..4c7db74a05f7 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -152,37 +152,6 @@ xfs_errortag_clearall(xfs_mount_t *mp, int loud)
 }
 #endif /* DEBUG */
 
-
-void
-xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...)
-{
-        va_list ap;
-
-        va_start(ap, fmt);
-        xfs_fs_vcmn_err(level, mp, fmt, ap);
-        va_end(ap);
-}
-
-void
-xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...)
-{
-        va_list ap;
-
-#ifdef DEBUG
-        xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES);
-#endif
-
-        if (xfs_panic_mask && (xfs_panic_mask & panic_tag)
-            && (level & CE_ALERT)) {
-                level &= ~CE_ALERT;
-                level |= CE_PANIC;
-                cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG.");
-        }
-        va_start(ap, fmt);
-        xfs_fs_vcmn_err(level, mp, fmt, ap);
-        va_end(ap);
-}
-
 void
 xfs_error_report(
         const char              *tag,
diff --git a/fs/xfs/xfs_error.h b/fs/xfs/xfs_error.h
index f338847f80b8..10dce5475f02 100644
--- a/fs/xfs/xfs_error.h
+++ b/fs/xfs/xfs_error.h
@@ -136,8 +136,8 @@ extern int xfs_error_test(int, int *, char *, int, char *, unsigned long);
          xfs_error_test((tag), (mp)->m_fixedfsid, "expr", __LINE__, __FILE__, \
                         (rf))))
 
-extern int xfs_errortag_add(int error_tag, xfs_mount_t *mp);
-extern int xfs_errortag_clearall(xfs_mount_t *mp, int loud);
+extern int xfs_errortag_add(int error_tag, struct xfs_mount *mp);
+extern int xfs_errortag_clearall(struct xfs_mount *mp, int loud);
 #else
 #define XFS_TEST_ERROR(expr, mp, tag, rf)       (expr)
 #define xfs_errortag_add(tag, mp)               (ENOSYS)
@@ -162,21 +162,15 @@ extern int xfs_errortag_clearall(xfs_mount_t *mp, int loud);
 
 struct xfs_mount;
 
-extern void xfs_fs_vcmn_err(int level, struct xfs_mount *mp,
-                char *fmt, va_list ap)
-        __attribute__ ((format (printf, 3, 0)));
-extern void xfs_cmn_err(int panic_tag, int level, struct xfs_mount *mp,
-                        char *fmt, ...)
-        __attribute__ ((format (printf, 4, 5)));
-extern void xfs_fs_cmn_err(int level, struct xfs_mount *mp, char *fmt, ...)
-        __attribute__ ((format (printf, 3, 4)));
-
 extern void xfs_hex_dump(void *p, int length);
 
 #define xfs_fs_repair_cmn_err(level, mp, fmt, args...) \
         xfs_fs_cmn_err(level, mp, fmt "  Unmount and run xfs_repair.", ## args)
 
 #define xfs_fs_mount_cmn_err(f, fmt, args...) \
-        ((f & XFS_MFSI_QUIET)? (void)0 : cmn_err(CE_WARN, "XFS: " fmt, ## args))
+        do { \
+                if (!(f & XFS_MFSI_QUIET))      \
+                        cmn_err(CE_WARN, "XFS: " fmt, ## args); \
+        } while (0)
 
 #endif  /* __XFS_ERROR_H__ */
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 0bf24b11d0c4..ae6fef1ff563 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -377,7 +377,7 @@ xfs_log_mount(
                 cmn_err(CE_NOTE, "XFS mounting filesystem %s", mp->m_fsname);
         else {
                 cmn_err(CE_NOTE,
-                        "!Mounting filesystem \"%s\" in no-recovery mode.  Filesystem will be inconsistent.",
+                        "Mounting filesystem \"%s\" in no-recovery mode.  Filesystem will be inconsistent.",
                         mp->m_fsname);
                 ASSERT(mp->m_flags & XFS_MOUNT_RDONLY);
         }
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 204d8e5fa7fa..aa0ebb776903 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -3800,7 +3800,7 @@ xlog_recover_finish(
                 log->l_flags &= ~XLOG_RECOVERY_NEEDED;
         } else {
                 cmn_err(CE_DEBUG,
-                        "!Ending clean XFS mount for filesystem: %s\n",
+                        "Ending clean XFS mount for filesystem: %s\n",
                         log->l_mp->m_fsname);
         }
         return 0;