Merge tag 'for-linus-v3.10-rc1-2' of git://oss.sgi.com/xfs/xfs

Pull xfs update (#2) from Ben Myers:

 - add CONFIG_XFS_WARN, a step between zero debugging and
   CONFIG_XFS_DEBUG.

 - fix attrmulti and attrlist to fall back to vmalloc when kmalloc
   fails.

* tag 'for-linus-v3.10-rc1-2' of git://oss.sgi.com/xfs/xfs:
  xfs: fallback to vmalloc for large buffers in xfs_compat_attrlist_by_handle
  xfs: fallback to vmalloc for large buffers in xfs_attrlist_by_handle
  xfs: introduce CONFIG_XFS_WARN

diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig
index cc33aaf..399e8ce 100644 (file)
--- a/fs/xfs/Kconfig
+++ b/fs/xfs/Kconfig
@@ -69,6 +69,19 @@ config XFS_RT
 
          If unsure, say N.
 
+config XFS_WARN
+       bool "XFS Verbose Warnings"
+       depends on XFS_FS && !XFS_DEBUG
+       help
+         Say Y here to get an XFS build with many additional warnings.
+         It converts ASSERT checks to WARN, so will log any out-of-bounds
+         conditions that occur that would otherwise be missed. It is much
+         lighter weight than XFS_DEBUG and does not modify algorithms and will
+         not cause the kernel to panic on non-fatal errors.
+
+         However, similar to XFS_DEBUG, it is only advisable to use this if you
+         are debugging a particular problem.
+
 config XFS_DEBUG
        bool "XFS Debugging support"
        depends on XFS_FS

diff --git a/fs/xfs/mrlock.h b/fs/xfs/mrlock.h
index ff6a198..e3c92d1 100644 (file)
--- a/fs/xfs/mrlock.h
+++ b/fs/xfs/mrlock.h
@@ -22,12 +22,12 @@
 
 typedef struct {
        struct rw_semaphore     mr_lock;
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        int                     mr_writer;
 #endif
 } mrlock_t;
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
 #define mrinit(mrp, name)      \
        do { (mrp)->mr_writer = 0; init_rwsem(&(mrp)->mr_lock); } while (0)
 #else
@@ -46,7 +46,7 @@ static inline void mraccess_nested(mrlock_t *mrp, int subclass)
 static inline void mrupdate_nested(mrlock_t *mrp, int subclass)
 {
        down_write_nested(&mrp->mr_lock, subclass);
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        mrp->mr_writer = 1;
 #endif
 }
@@ -60,7 +60,7 @@ static inline int mrtryupdate(mrlock_t *mrp)
 {
        if (!down_write_trylock(&mrp->mr_lock))
                return 0;
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        mrp->mr_writer = 1;
 #endif
        return 1;
@@ -68,7 +68,7 @@ static inline int mrtryupdate(mrlock_t *mrp)
 
 static inline void mrunlock_excl(mrlock_t *mrp)
 {
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        mrp->mr_writer = 0;
 #endif
        up_write(&mrp->mr_lock);
@@ -81,7 +81,7 @@ static inline void mrunlock_shared(mrlock_t *mrp)
 
 static inline void mrdemote(mrlock_t *mrp)
 {
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        mrp->mr_writer = 0;
 #endif
        downgrade_write(&mrp->mr_lock);

diff --git a/fs/xfs/xfs.h b/fs/xfs/xfs.h
index d8b11b7..a742c47 100644 (file)
--- a/fs/xfs/xfs.h
+++ b/fs/xfs/xfs.h
@@ -24,6 +24,11 @@
 #define XFS_BUF_LOCK_TRACKING 1
 #endif
 
+#ifdef CONFIG_XFS_WARN
+#define XFS_WARN 1
+#endif
+
+
 #include "xfs_linux.h"
 
 #endif /* __XFS_H__ */

diff --git a/fs/xfs/xfs_alloc_btree.c b/fs/xfs/xfs_alloc_btree.c
index 30c4c14..cafc902 100644 (file)
--- a/fs/xfs/xfs_alloc_btree.c
+++ b/fs/xfs/xfs_alloc_btree.c
@@ -386,7 +386,7 @@ const struct xfs_buf_ops xfs_allocbt_buf_ops = {
 };
 
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_allocbt_keys_inorder(
        struct xfs_btree_cur    *cur,
@@ -442,7 +442,7 @@ static const struct xfs_btree_ops xfs_allocbt_ops = {
        .init_ptr_from_cur      = xfs_allocbt_init_ptr_from_cur,
        .key_diff               = xfs_allocbt_key_diff,
        .buf_ops                = &xfs_allocbt_buf_ops,
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        .keys_inorder           = xfs_allocbt_keys_inorder,
        .recs_inorder           = xfs_allocbt_recs_inorder,
 #endif

diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index 3a86c3f..0c61a22 100644 (file)
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -813,7 +813,7 @@ const struct xfs_buf_ops xfs_bmbt_buf_ops = {
 };
 
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_bmbt_keys_inorder(
        struct xfs_btree_cur    *cur,
@@ -853,7 +853,7 @@ static const struct xfs_btree_ops xfs_bmbt_ops = {
        .init_ptr_from_cur      = xfs_bmbt_init_ptr_from_cur,
        .key_diff               = xfs_bmbt_key_diff,
        .buf_ops                = &xfs_bmbt_buf_ops,
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        .keys_inorder           = xfs_bmbt_keys_inorder,
        .recs_inorder           = xfs_bmbt_recs_inorder,
 #endif

diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h
index 6e6c915..55e3c7c 100644 (file)
--- a/fs/xfs/xfs_btree.h
+++ b/fs/xfs/xfs_btree.h
@@ -215,7 +215,7 @@ struct xfs_btree_ops {
 
        const struct xfs_buf_ops        *buf_ops;
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        /* check that k1 is lower than k2 */
        int     (*keys_inorder)(struct xfs_btree_cur *cur,
                                union xfs_btree_key *k1,

diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c
index ecc6c66..5246de4 100644 (file)
--- a/fs/xfs/xfs_dir2_node.c
+++ b/fs/xfs/xfs_dir2_node.c
@@ -993,7 +993,7 @@ xfs_dir2_leafn_rebalance(
        xfs_dir2_leaf_t         *leaf1;         /* first leaf structure */
        xfs_dir2_leaf_t         *leaf2;         /* second leaf structure */
        int                     mid;            /* midpoint leaf index */
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        int                     oldstale;       /* old count of stale leaves */
 #endif
        int                     oldsum;         /* old total leaf count */
@@ -1022,7 +1022,7 @@ xfs_dir2_leafn_rebalance(
        ents2 = xfs_dir3_leaf_ents_p(leaf2);
 
        oldsum = hdr1.count + hdr2.count;
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        oldstale = hdr1.stale + hdr2.stale;
 #endif
        mid = oldsum >> 1;

diff --git a/fs/xfs/xfs_ialloc_btree.c b/fs/xfs/xfs_ialloc_btree.c
index c82ac88..5448eb6 100644 (file)
--- a/fs/xfs/xfs_ialloc_btree.c
+++ b/fs/xfs/xfs_ialloc_btree.c
@@ -272,7 +272,7 @@ const struct xfs_buf_ops xfs_inobt_buf_ops = {
        .verify_write = xfs_inobt_write_verify,
 };
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
 STATIC int
 xfs_inobt_keys_inorder(
        struct xfs_btree_cur    *cur,
@@ -310,7 +310,7 @@ static const struct xfs_btree_ops xfs_inobt_ops = {
        .init_ptr_from_cur      = xfs_inobt_init_ptr_from_cur,
        .key_diff               = xfs_inobt_key_diff,
        .buf_ops                = &xfs_inobt_buf_ops,
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        .keys_inorder           = xfs_inobt_keys_inorder,
        .recs_inorder           = xfs_inobt_recs_inorder,
 #endif

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 558ef49..efbe1ac 100644 (file)
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -287,7 +287,7 @@ xfs_ilock_demote(
        trace_xfs_ilock_demote(ip, lock_flags, _RET_IP_);
 }
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
 int
 xfs_isilocked(
        xfs_inode_t             *ip,

diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index d681e34..5e99968 100644 (file)
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -422,9 +422,12 @@ xfs_attrlist_by_handle(
        if (IS_ERR(dentry))
                return PTR_ERR(dentry);
 
-       kbuf = kzalloc(al_hreq.buflen, GFP_KERNEL);
-       if (!kbuf)
-               goto out_dput;
+       kbuf = kmem_zalloc(al_hreq.buflen, KM_SLEEP | KM_MAYFAIL);
+       if (!kbuf) {
+               kbuf = kmem_zalloc_large(al_hreq.buflen);
+               if (!kbuf)
+                       goto out_dput;
+       }
 
        cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
        error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
@@ -436,7 +439,10 @@ xfs_attrlist_by_handle(
                error = -EFAULT;
 
  out_kfree:
-       kfree(kbuf);
+       if (is_vmalloc_addr(kbuf))
+               kmem_free_large(kbuf);
+       else
+               kmem_free(kbuf);
  out_dput:
        dput(dentry);
        return error;

diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c
index 63b8fc4..c0c6625 100644 (file)
--- a/fs/xfs/xfs_ioctl32.c
+++ b/fs/xfs/xfs_ioctl32.c
@@ -373,9 +373,12 @@ xfs_compat_attrlist_by_handle(
                return PTR_ERR(dentry);
 
        error = -ENOMEM;
-       kbuf = kmalloc(al_hreq.buflen, GFP_KERNEL);
-       if (!kbuf)
-               goto out_dput;
+       kbuf = kmem_zalloc(al_hreq.buflen, KM_SLEEP | KM_MAYFAIL);
+       if (!kbuf) {
+               kbuf = kmem_zalloc_large(al_hreq.buflen);
+               if (!kbuf)
+                       goto out_dput;
+       }
 
        cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
        error = -xfs_attr_list(XFS_I(dentry->d_inode), kbuf, al_hreq.buflen,
@@ -387,7 +390,10 @@ xfs_compat_attrlist_by_handle(
                error = -EFAULT;
 
  out_kfree:
-       kfree(kbuf);
+       if (is_vmalloc_addr(kbuf))
+               kmem_free_large(kbuf);
+       else
+               kmem_free(kbuf);
  out_dput:
        dput(dentry);
        return error;

diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h
index 14e59d9..800f896 100644 (file)
--- a/fs/xfs/xfs_linux.h
+++ b/fs/xfs/xfs_linux.h
@@ -293,22 +293,34 @@ static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y)
 #define ASSERT_ALWAYS(expr)    \
        (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
 
-#ifndef DEBUG
-#define ASSERT(expr)   ((void)0)
+#ifdef DEBUG
+#define ASSERT(expr)   \
+       (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
 
 #ifndef STATIC
-# define STATIC static noinline
+# define STATIC noinline
 #endif
 
-#else /* DEBUG */
+#else  /* !DEBUG */
+
+#ifdef XFS_WARN
 
 #define ASSERT(expr)   \
-       (unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
+       (unlikely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__))
 
 #ifndef STATIC
-# define STATIC noinline
+# define STATIC static noinline
+#endif
+
+#else  /* !DEBUG && !XFS_WARN */
+
+#define ASSERT(expr)   ((void)0)
+
+#ifndef STATIC
+# define STATIC static noinline
 #endif
 
+#endif /* XFS_WARN */
 #endif /* DEBUG */
 
 #endif /* __XFS_LINUX__ */

diff --git a/fs/xfs/xfs_message.c b/fs/xfs/xfs_message.c
index 331cd9f..9163dc1 100644 (file)
--- a/fs/xfs/xfs_message.c
+++ b/fs/xfs/xfs_message.c
@@ -93,6 +93,14 @@ xfs_alert_tag(
 }
 
 void
+asswarn(char *expr, char *file, int line)
+{
+       xfs_warn(NULL, "Assertion failed: %s, file: %s, line: %d",
+               expr, file, line);
+       WARN_ON(1);
+}
+
+void
 assfail(char *expr, char *file, int line)
 {
        xfs_emerg(NULL, "Assertion failed: %s, file: %s, line: %d",

diff --git a/fs/xfs/xfs_message.h b/fs/xfs/xfs_message.h
index 76c8198..8540115 100644 (file)
--- a/fs/xfs/xfs_message.h
+++ b/fs/xfs/xfs_message.h
@@ -57,6 +57,7 @@ do {                                                                  \
        xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__)
 
 extern void assfail(char *expr, char *f, int l);
+extern void asswarn(char *expr, char *f, int l);
 
 extern void xfs_hex_dump(void *p, int length);
 

diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index cd29f61..a44dba5 100644 (file)
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -405,7 +405,7 @@ typedef struct xfs_trans {
        int64_t                 t_res_fdblocks_delta; /* on-disk only chg */
        int64_t                 t_frextents_delta;/* superblock freextents chg*/
        int64_t                 t_res_frextents_delta; /* on-disk only chg */
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
        int64_t                 t_ag_freeblks_delta; /* debugging counter */
        int64_t                 t_ag_flist_delta; /* debugging counter */
        int64_t                 t_ag_btree_delta; /* debugging counter */
@@ -433,7 +433,7 @@ typedef struct xfs_trans {
 #define        xfs_trans_get_block_res(tp)     ((tp)->t_blk_res)
 #define        xfs_trans_set_sync(tp)          ((tp)->t_flags |= XFS_TRANS_SYNC)
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(XFS_WARN)
 #define        xfs_trans_agblocks_delta(tp, d) ((tp)->t_ag_freeblks_delta += (int64_t)d)
 #define        xfs_trans_agflist_delta(tp, d)  ((tp)->t_ag_flist_delta += (int64_t)d)
 #define        xfs_trans_agbtree_delta(tp, d)  ((tp)->t_ag_btree_delta += (int64_t)d)