28 files changed, 416 insertions, 323 deletions

diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 5250c428fc1f..ef3386549140 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -66,7 +66,7 @@ static match_table_t tokens = {
         {Opt_afid, "afid=%u"},
         {Opt_rfdno, "rfdno=%u"},
         {Opt_wfdno, "wfdno=%u"},
-        {Opt_debug, "debug=%u"},
+        {Opt_debug, "debug=%x"},
         {Opt_name, "name=%s"},
         {Opt_remotename, "aname=%s"},
         {Opt_unix, "proto=unix"},
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 217323b0c896..b41e8b379652 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -1048,13 +1048,14 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon,
                         cifs_small_buf_release(iov[0].iov_base);
                 else if(resp_buf_type == CIFS_LARGE_BUFFER)
                         cifs_buf_release(iov[0].iov_base);
-        } else /* return buffer to caller to free */ /* BB FIXME how do we tell caller if it is not a large buffer */ {
-                *buf = iov[0].iov_base;
+        } else if(resp_buf_type != CIFS_NO_BUFFER) {
+                /* return buffer to caller to free */ 
+                *buf = iov[0].iov_base;         
                 if(resp_buf_type == CIFS_SMALL_BUFFER)
                         *pbuf_type = CIFS_SMALL_BUFFER;
                 else if(resp_buf_type == CIFS_LARGE_BUFFER)
                         *pbuf_type = CIFS_LARGE_BUFFER;
-        }
+        } /* else no valid buffer on return - leave as null */
 
         /* Note: On -EAGAIN error only caller can retry on handle based calls
                 since file handle passed in no longer valid */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index e488603fb1e7..ef5ae6f93c75 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1795,10 +1795,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                            conjunction with 52K kvec constraint on arch with 4K
                            page size  */
 
-                if(cifs_sb->rsize < PAGE_CACHE_SIZE) {
-                        cifs_sb->rsize = PAGE_CACHE_SIZE; 
-                        /* Windows ME does this */
-                        cFYI(1,("Attempt to set readsize for mount to less than one page (4096)"));
+                if(cifs_sb->rsize < 2048) {
+                        cifs_sb->rsize = 2048; 
+                        /* Windows ME may prefer this */
+                        cFYI(1,("readsize set to minimum 2048"));
                 }
                 cifs_sb->mnt_uid = volume_info.linux_uid;
                 cifs_sb->mnt_gid = volume_info.linux_gid;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index d17c97d07c80..675bd2568297 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1442,13 +1442,15 @@ ssize_t cifs_user_read(struct file *file, char __user *read_data,
                                          &bytes_read, &smb_read_data,
                                          &buf_type);
                         pSMBr = (struct smb_com_read_rsp *)smb_read_data;
-                        if (copy_to_user(current_offset, 
-                                         smb_read_data + 4 /* RFC1001 hdr */
-                                         + le16_to_cpu(pSMBr->DataOffset), 
-                                         bytes_read)) {
-                                rc = -EFAULT;
-                        }
                         if (smb_read_data) {
+                                if (copy_to_user(current_offset,
+                                                smb_read_data +
+                                                4 /* RFC1001 length field */ +
+                                                le16_to_cpu(pSMBr->DataOffset),
+                                                bytes_read)) {
+                                        rc = -EFAULT;
+                                }
+
                                 if(buf_type == CIFS_SMALL_BUFFER)
                                         cifs_small_buf_release(smb_read_data);
                                 else if(buf_type == CIFS_LARGE_BUFFER)
diff --git a/fs/compat.c b/fs/compat.c
index 70c5af4cc270..5333c7d7427f 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1751,11 +1751,15 @@ asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp,
         ret = compat_core_sys_select(n, inp, outp, exp, &timeout);
 
         if (tvp) {
+                struct compat_timeval rtv;
+
                 if (current->personality & STICKY_TIMEOUTS)
                         goto sticky;
-                tv.tv_usec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ));
-                tv.tv_sec = timeout;
-                if (copy_to_user(tvp, &tv, sizeof(tv))) {
+                rtv.tv_usec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ));
+                rtv.tv_sec = timeout;
+                if (compat_timeval_compare(&rtv, &tv) >= 0)
+                        rtv = tv;
+                if (copy_to_user(tvp, &rtv, sizeof(rtv))) {
 sticky:
                         /*
                          * If an application puts its timeval in read-only
@@ -1822,13 +1826,17 @@ asmlinkage long compat_sys_pselect7(int n, compat_ulong_t __user *inp,
         } while (!ret && !timeout && tsp && (ts.tv_sec || ts.tv_nsec));
 
         if (tsp && !(current->personality & STICKY_TIMEOUTS)) {
-                ts.tv_sec += timeout / HZ;
-                ts.tv_nsec += (timeout % HZ) * (1000000000/HZ);
-                if (ts.tv_nsec >= 1000000000) {
-                        ts.tv_sec++;
-                        ts.tv_nsec -= 1000000000;
+                struct compat_timespec rts;
+
+                rts.tv_sec = timeout / HZ;
+                rts.tv_nsec = (timeout % HZ) * (NSEC_PER_SEC/HZ);
+                if (rts.tv_nsec >= NSEC_PER_SEC) {
+                        rts.tv_sec++;
+                        rts.tv_nsec -= NSEC_PER_SEC;
                 }
-                (void)copy_to_user(tsp, &ts, sizeof(ts));
+                if (compat_timespec_compare(&rts, &ts) >= 0)
+                        rts = ts;
+                copy_to_user(tsp, &rts, sizeof(rts));
         }
 
         if (ret == -ERESTARTNOHAND) {
@@ -1918,12 +1926,17 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
                 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
 
         if (tsp && timeout >= 0) {
+                struct compat_timespec rts;
+
                 if (current->personality & STICKY_TIMEOUTS)
                         goto sticky;
                 /* Yes, we know it's actually an s64, but it's also positive. */
-                ts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) * 1000;
-                ts.tv_sec = timeout;
-                if (copy_to_user(tsp, &ts, sizeof(ts))) {
+                rts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) *
+                                        1000;
+                rts.tv_sec = timeout;
+                if (compat_timespec_compare(&rts, &ts) >= 0)
+                        rts = ts;
+                if (copy_to_user(tsp, &rts, sizeof(rts))) {
 sticky:
                         /*
                          * If an application puts its timeval in read-only
diff --git a/fs/exec.c b/fs/exec.c
index 055378d2513e..0e1c95074d42 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1403,7 +1403,7 @@ static void zap_threads (struct mm_struct *mm)
                 do_each_thread(g,p) {
                         if (mm == p->mm && p != tsk &&
                             p->ptrace && p->parent->mm == mm) {
-                                __ptrace_unlink(p);
+                                __ptrace_detach(p, 0);
                         }
                 } while_each_thread(g,p);
                 write_unlock_irq(&tasklist_lock);
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index a2ca3107d475..86ae8e93adb9 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -792,18 +792,20 @@ ext2_xattr_delete_inode(struct inode *inode)
                 ext2_free_blocks(inode, EXT2_I(inode)->i_file_acl, 1);
                 get_bh(bh);
                 bforget(bh);
+                unlock_buffer(bh);
         } else {
                 HDR(bh)->h_refcount = cpu_to_le32(
                         le32_to_cpu(HDR(bh)->h_refcount) - 1);
                 if (ce)
                         mb_cache_entry_release(ce);
+                ea_bdebug(bh, "refcount now=%d",
+                        le32_to_cpu(HDR(bh)->h_refcount));
+                unlock_buffer(bh);
                 mark_buffer_dirty(bh);
                 if (IS_SYNC(inode))
                         sync_dirty_buffer(bh);
                 DQUOT_FREE_BLOCK(inode, 1);
         }
-        ea_bdebug(bh, "refcount now=%d", le32_to_cpu(HDR(bh)->h_refcount) - 1);
-        unlock_buffer(bh);
         EXT2_I(inode)->i_file_acl = 0;
 
 cleanup:
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index f556a0d5c0d3..0c9a2ee54c91 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -66,6 +66,12 @@ static void restore_sigs(sigset_t *oldset)
         sigprocmask(SIG_SETMASK, oldset, NULL);
 }
 
+/*
+ * Reset request, so that it can be reused
+ *
+ * The caller must be _very_ careful to make sure, that it is holding
+ * the only reference to req
+ */
 void fuse_reset_request(struct fuse_req *req)
 {
         int preallocated = req->preallocated;
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 296351615b00..6f05379b0a0d 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -116,9 +116,14 @@ int fuse_open_common(struct inode *inode, struct file *file, int isdir)
 /* Special case for failed iget in CREATE */
 static void fuse_release_end(struct fuse_conn *fc, struct fuse_req *req)
 {
-        u64 nodeid = req->in.h.nodeid;
-        fuse_reset_request(req);
-        fuse_send_forget(fc, req, nodeid, 1);
+        /* If called from end_io_requests(), req has more than one
+           reference and fuse_reset_request() cannot work */
+        if (fc->connected) {
+                u64 nodeid = req->in.h.nodeid;
+                fuse_reset_request(req);
+                fuse_send_forget(fc, req, nodeid, 1);
+        } else
+                fuse_put_request(fc, req);
 }
 
 void fuse_send_release(struct fuse_conn *fc, struct fuse_file *ff,
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c
index e6265a0b56b8..543ed543d1e5 100644
--- a/fs/jbd/checkpoint.c
+++ b/fs/jbd/checkpoint.c
@@ -24,75 +24,29 @@
 #include <linux/slab.h>
 
 /*
- * Unlink a buffer from a transaction checkpoint list.
+ * Unlink a buffer from a transaction.
  *
  * Called with j_list_lock held.
  */
 
-static void __buffer_unlink_first(struct journal_head *jh)
+static inline void __buffer_unlink(struct journal_head *jh)
 {
         transaction_t *transaction;
 
         transaction = jh->b_cp_transaction;
+        jh->b_cp_transaction = NULL;
 
         jh->b_cpnext->b_cpprev = jh->b_cpprev;
         jh->b_cpprev->b_cpnext = jh->b_cpnext;
-        if (transaction->t_checkpoint_list == jh) {
+        if (transaction->t_checkpoint_list == jh)
                 transaction->t_checkpoint_list = jh->b_cpnext;
-                if (transaction->t_checkpoint_list == jh)
-                        transaction->t_checkpoint_list = NULL;
-        }
-}
-
-/*
- * Unlink a buffer from a transaction checkpoint(io) list.
- *
- * Called with j_list_lock held.
- */
-
-static inline void __buffer_unlink(struct journal_head *jh)
-{
-        transaction_t *transaction;
-
-        transaction = jh->b_cp_transaction;
-
-        __buffer_unlink_first(jh);
-        if (transaction->t_checkpoint_io_list == jh) {
-                transaction->t_checkpoint_io_list = jh->b_cpnext;
-                if (transaction->t_checkpoint_io_list == jh)
-                        transaction->t_checkpoint_io_list = NULL;
-        }
-}
-
-/*
- * Move a buffer from the checkpoint list to the checkpoint io list
- *
- * Called with j_list_lock held
- */
-
-static inline void __buffer_relink_io(struct journal_head *jh)
-{
-        transaction_t *transaction;
-
-        transaction = jh->b_cp_transaction;
-        __buffer_unlink_first(jh);
-
-        if (!transaction->t_checkpoint_io_list) {
-                jh->b_cpnext = jh->b_cpprev = jh;
-        } else {
-                jh->b_cpnext = transaction->t_checkpoint_io_list;
-                jh->b_cpprev = transaction->t_checkpoint_io_list->b_cpprev;
-                jh->b_cpprev->b_cpnext = jh;
-                jh->b_cpnext->b_cpprev = jh;
-        }
-        transaction->t_checkpoint_io_list = jh;
+        if (transaction->t_checkpoint_list == jh)
+                transaction->t_checkpoint_list = NULL;
 }
 
 /*
  * Try to release a checkpointed buffer from its transaction.
- * Returns 1 if we released it and 2 if we also released the
- * whole transaction.
- *
+ * Returns 1 if we released it.
  * Requires j_list_lock
  * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
  */
@@ -103,11 +57,12 @@ static int __try_to_free_cp_buf(struct journal_head *jh)
 
         if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) {
                 JBUFFER_TRACE(jh, "remove from checkpoint list");
-                ret = __journal_remove_checkpoint(jh) + 1;
+                __journal_remove_checkpoint(jh);
                 jbd_unlock_bh_state(bh);
                 journal_remove_journal_head(bh);
                 BUFFER_TRACE(bh, "release");
                 __brelse(bh);
+                ret = 1;
         } else {
                 jbd_unlock_bh_state(bh);
         }
@@ -162,53 +117,83 @@ static void jbd_sync_bh(journal_t *journal, struct buffer_head *bh)
 }
 
 /*
- * Clean up transaction's list of buffers submitted for io.
- * We wait for any pending IO to complete and remove any clean
- * buffers. Note that we take the buffers in the opposite ordering
- * from the one in which they were submitted for IO.
+ * Clean up a transaction's checkpoint list.
+ *
+ * We wait for any pending IO to complete and make sure any clean
+ * buffers are removed from the transaction.
+ *
+ * Return 1 if we performed any actions which might have destroyed the
+ * checkpoint.  (journal_remove_checkpoint() deletes the transaction when
+ * the last checkpoint buffer is cleansed)
  *
  * Called with j_list_lock held.
  */
-
-static void __wait_cp_io(journal_t *journal, transaction_t *transaction)
+static int __cleanup_transaction(journal_t *journal, transaction_t *transaction)
 {
-        struct journal_head *jh;
+        struct journal_head *jh, *next_jh, *last_jh;
         struct buffer_head *bh;
-        tid_t this_tid;
-        int released = 0;
-
-        this_tid = transaction->t_tid;
-restart:
-        /* Didn't somebody clean up the transaction in the meanwhile */
-        if (journal->j_checkpoint_transactions != transaction ||
-                transaction->t_tid != this_tid)
-                return;
-        while (!released && transaction->t_checkpoint_io_list) {
-                jh = transaction->t_checkpoint_io_list;
+        int ret = 0;
+
+        assert_spin_locked(&journal->j_list_lock);
+        jh = transaction->t_checkpoint_list;
+        if (!jh)
+                return 0;
+
+        last_jh = jh->b_cpprev;
+        next_jh = jh;
+        do {
+                jh = next_jh;
                 bh = jh2bh(jh);
-                if (!jbd_trylock_bh_state(bh)) {
-                        jbd_sync_bh(journal, bh);
-                        spin_lock(&journal->j_list_lock);
-                        goto restart;
-                }
                 if (buffer_locked(bh)) {
                         atomic_inc(&bh->b_count);
                         spin_unlock(&journal->j_list_lock);
-                        jbd_unlock_bh_state(bh);
                         wait_on_buffer(bh);
                         /* the journal_head may have gone by now */
                         BUFFER_TRACE(bh, "brelse");
                         __brelse(bh);
-                        spin_lock(&journal->j_list_lock);
-                        goto restart;
+                        goto out_return_1;
                 }
+
                 /*
-                 * Now in whatever state the buffer currently is, we know that
-                 * it has been written out and so we can drop it from the list
+                 * This is foul
                  */
-                released = __journal_remove_checkpoint(jh);
-                jbd_unlock_bh_state(bh);
-        }
+                if (!jbd_trylock_bh_state(bh)) {
+                        jbd_sync_bh(journal, bh);
+                        goto out_return_1;
+                }
+
+                if (jh->b_transaction != NULL) {
+                        transaction_t *t = jh->b_transaction;
+                        tid_t tid = t->t_tid;
+
+                        spin_unlock(&journal->j_list_lock);
+                        jbd_unlock_bh_state(bh);
+                        log_start_commit(journal, tid);
+                        log_wait_commit(journal, tid);
+                        goto out_return_1;
+                }
+
+                /*
+                 * AKPM: I think the buffer_jbddirty test is redundant - it
+                 * shouldn't have NULL b_transaction?
+                 */
+                next_jh = jh->b_cpnext;
+                if (!buffer_dirty(bh) && !buffer_jbddirty(bh)) {
+                        BUFFER_TRACE(bh, "remove from checkpoint");
+                        __journal_remove_checkpoint(jh);
+                        jbd_unlock_bh_state(bh);
+                        journal_remove_journal_head(bh);
+                        __brelse(bh);
+                        ret = 1;
+                } else {
+                        jbd_unlock_bh_state(bh);
+                }
+        } while (jh != last_jh);
+
+        return ret;
+out_return_1:
+        spin_lock(&journal->j_list_lock);
+        return 1;
 }
 
 #define NR_BATCH        64
@@ -218,7 +203,9 @@ __flush_batch(journal_t *journal, struct buffer_head **bhs, int *batch_count)
 {
         int i;
 
+        spin_unlock(&journal->j_list_lock);
         ll_rw_block(SWRITE, *batch_count, bhs);
+        spin_lock(&journal->j_list_lock);
         for (i = 0; i < *batch_count; i++) {
                 struct buffer_head *bh = bhs[i];
                 clear_buffer_jwrite(bh);
@@ -234,46 +221,19 @@ __flush_batch(journal_t *journal, struct buffer_head **bhs, int *batch_count)
  * Return 1 if something happened which requires us to abort the current
  * scan of the checkpoint list.  
  *
- * Called with j_list_lock held and drops it if 1 is returned
+ * Called with j_list_lock held.
  * Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
  */
-static int __process_buffer(journal_t *journal, struct journal_head *jh,
-                        struct buffer_head **bhs, int *batch_count)
+static int __flush_buffer(journal_t *journal, struct journal_head *jh,
+                        struct buffer_head **bhs, int *batch_count,
+                        int *drop_count)
 {
         struct buffer_head *bh = jh2bh(jh);
         int ret = 0;
 
-        if (buffer_locked(bh)) {
-                get_bh(bh);
-                spin_unlock(&journal->j_list_lock);
-                jbd_unlock_bh_state(bh);
-                wait_on_buffer(bh);
-                /* the journal_head may have gone by now */
-                BUFFER_TRACE(bh, "brelse");
-                put_bh(bh);
-                ret = 1;
-        }
-        else if (jh->b_transaction != NULL) {
-                transaction_t *t = jh->b_transaction;
-                tid_t tid = t->t_tid;
+        if (buffer_dirty(bh) && !buffer_locked(bh) && jh->b_jlist == BJ_None) {
+                J_ASSERT_JH(jh, jh->b_transaction == NULL);
 
-                spin_unlock(&journal->j_list_lock);
-                jbd_unlock_bh_state(bh);
-                log_start_commit(journal, tid);
-                log_wait_commit(journal, tid);
-                ret = 1;
-        }
-        else if (!buffer_dirty(bh)) {
-                J_ASSERT_JH(jh, !buffer_jbddirty(bh));
-                BUFFER_TRACE(bh, "remove from checkpoint");
-                __journal_remove_checkpoint(jh);
-                spin_unlock(&journal->j_list_lock);
-                jbd_unlock_bh_state(bh);
-                journal_remove_journal_head(bh);
-                put_bh(bh);
-                ret = 1;
-        }
-        else {
                 /*
                  * Important: we are about to write the buffer, and
                  * possibly block, while still holding the journal lock.
@@ -286,30 +246,45 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh,
                 J_ASSERT_BH(bh, !buffer_jwrite(bh));
                 set_buffer_jwrite(bh);
                 bhs[*batch_count] = bh;
-                __buffer_relink_io(jh);
                 jbd_unlock_bh_state(bh);
                 (*batch_count)++;
                 if (*batch_count == NR_BATCH) {
-                        spin_unlock(&journal->j_list_lock);
                         __flush_batch(journal, bhs, batch_count);
                         ret = 1;
                 }
+        } else {
+                int last_buffer = 0;
+                if (jh->b_cpnext == jh) {
+                        /* We may be about to drop the transaction.  Tell the
+                         * caller that the lists have changed.
+                         */
+                        last_buffer = 1;
+                }
+                if (__try_to_free_cp_buf(jh)) {
+                        (*drop_count)++;
+                        ret = last_buffer;
+                }
         }
         return ret;
 }
 
 /*
- * Perform an actual checkpoint. We take the first transaction on the
- * list of transactions to be checkpointed and send all its buffers
- * to disk. We submit larger chunks of data at once.
+ * Perform an actual checkpoint.  We don't write out only enough to
+ * satisfy the current blocked requests: rather we submit a reasonably
+ * sized chunk of the outstanding data to disk at once for
+ * efficiency.  __log_wait_for_space() will retry if we didn't free enough.
  * 
+ * However, we _do_ take into account the amount requested so that once
+ * the IO has been queued, we can return as soon as enough of it has
+ * completed to disk.
+ *
  * The journal should be locked before calling this function.
  */
 int log_do_checkpoint(journal_t *journal)
 {
-        transaction_t *transaction;
-        tid_t this_tid;
         int result;
+        int batch_count = 0;
+        struct buffer_head *bhs[NR_BATCH];
 
         jbd_debug(1, "Start checkpoint\n");
 
@@ -324,70 +299,79 @@ int log_do_checkpoint(journal_t *journal)
                 return result;
 
         /*
-         * OK, we need to start writing disk blocks.  Take one transaction
-         * and write it.
+         * OK, we need to start writing disk blocks.  Try to free up a
+         * quarter of the log in a single checkpoint if we can.
          */
-        spin_lock(&journal->j_list_lock);
-        if (!journal->j_checkpoint_transactions)
-                goto out;
-        transaction = journal->j_checkpoint_transactions;
-        this_tid = transaction->t_tid;
-restart:
         /*
-         * If someone cleaned up this transaction while we slept, we're
-         * done (maybe it's a new transaction, but it fell at the same
-         * address).
+         * AKPM: check this code.  I had a feeling a while back that it
+         * degenerates into a busy loop at unmount time.
          */
-        if (journal->j_checkpoint_transactions == transaction &&
-                        transaction->t_tid == this_tid) {
-                int batch_count = 0;
-                struct buffer_head *bhs[NR_BATCH];
-                struct journal_head *jh;
-                int retry = 0;
-
-                while (!retry && transaction->t_checkpoint_list) {
+        spin_lock(&journal->j_list_lock);
+        while (journal->j_checkpoint_transactions) {
+                transaction_t *transaction;
+                struct journal_head *jh, *last_jh, *next_jh;
+                int drop_count = 0;
+                int cleanup_ret, retry = 0;
+                tid_t this_tid;
+
+                transaction = journal->j_checkpoint_transactions;
+                this_tid = transaction->t_tid;
+                jh = transaction->t_checkpoint_list;
+                last_jh = jh->b_cpprev;
+                next_jh = jh;
+                do {
                         struct buffer_head *bh;
 
-                        jh = transaction->t_checkpoint_list;
+                        jh = next_jh;
+                        next_jh = jh->b_cpnext;
                         bh = jh2bh(jh);
                         if (!jbd_trylock_bh_state(bh)) {
                                 jbd_sync_bh(journal, bh);
+                                spin_lock(&journal->j_list_lock);
                                 retry = 1;
                                 break;
                         }
-                        retry = __process_buffer(journal, jh, bhs,
-                                                &batch_count);
-                        if (!retry &&
-                            lock_need_resched(&journal->j_list_lock)) {
-                                spin_unlock(&journal->j_list_lock);
+                        retry = __flush_buffer(journal, jh, bhs, &batch_count, &drop_count);
+                        if (cond_resched_lock(&journal->j_list_lock)) {
                                 retry = 1;
                                 break;
                         }
-                }
+                } while (jh != last_jh && !retry);
 
                 if (batch_count) {
-                        if (!retry) {
-                                spin_unlock(&journal->j_list_lock);
-                                retry = 1;
-                        }
                         __flush_batch(journal, bhs, &batch_count);
+                        retry = 1;
                 }
 
-                if (retry) {
-                        spin_lock(&journal->j_list_lock);
-                        goto restart;
-                }
                 /*
-                 * Now we have cleaned up the first transaction's checkpoint
-                 * list.  Let's clean up the second one.
+                 * If someone cleaned up this transaction while we slept, we're
+                 * done
+                 */
+                if (journal->j_checkpoint_transactions != transaction)
+                        break;
+                if (retry)
+                        continue;
+                /*
+                 * Maybe it's a new transaction, but it fell at the same
+                 * address
                  */
-                __wait_cp_io(journal, transaction);
+                if (transaction->t_tid != this_tid)
+                        continue;
+                /*
+                 * We have walked the whole transaction list without
+                 * finding anything to write to disk.  We had better be
+                 * able to make some progress or we are in trouble.
+                 */
+                cleanup_ret = __cleanup_transaction(journal, transaction);
+                J_ASSERT(drop_count != 0 || cleanup_ret != 0);
+                if (journal->j_checkpoint_transactions != transaction)
+                        break;
         }
-out:
         spin_unlock(&journal->j_list_lock);
         result = cleanup_journal_tail(journal);
         if (result < 0)
                 return result;
+
         return 0;
 }
 
@@ -472,91 +456,52 @@ int cleanup_journal_tail(journal_t *journal)
 /* Checkpoint list management */
 
 /*
- * journal_clean_one_cp_list
- *
- * Find all the written-back checkpoint buffers in the given list and release them.
- *
- * Called with the journal locked.
- * Called with j_list_lock held.
- * Returns number of bufers reaped (for debug)
- */
-
-static int journal_clean_one_cp_list(struct journal_head *jh, int *released)
-{
-        struct journal_head *last_jh;
-        struct journal_head *next_jh = jh;
-        int ret, freed = 0;
-
-        *released = 0;
-        if (!jh)
-                return 0;
-
-        last_jh = jh->b_cpprev;
-        do {
-                jh = next_jh;
-                next_jh = jh->b_cpnext;
-                /* Use trylock because of the ranking */
-                if (jbd_trylock_bh_state(jh2bh(jh))) {
-                        ret = __try_to_free_cp_buf(jh);
-                        if (ret) {
-                                freed++;
-                                if (ret == 2) {
-                                        *released = 1;
-                                        return freed;
-                                }
-                        }
-                }
-                /*
-                 * This function only frees up some memory if possible so we
-                 * dont have an obligation to finish processing. Bail out if
-                 * preemption requested:
-                 */
-                if (need_resched())
-                        return freed;
-        } while (jh != last_jh);
-
-        return freed;
-}
-
-/*
  * journal_clean_checkpoint_list
  *
  * Find all the written-back checkpoint buffers in the journal and release them.
  *
  * Called with the journal locked.
  * Called with j_list_lock held.
- * Returns number of buffers reaped (for debug)
+ * Returns number of bufers reaped (for debug)
  */
 
 int __journal_clean_checkpoint_list(journal_t *journal)
 {
         transaction_t *transaction, *last_transaction, *next_transaction;
-        int ret = 0, released;
+        int ret = 0;
 
         transaction = journal->j_checkpoint_transactions;
-        if (!transaction)
+        if (transaction == 0)
                 goto out;
 
         last_transaction = transaction->t_cpprev;
         next_transaction = transaction;
         do {
+                struct journal_head *jh;
+
                 transaction = next_transaction;
                 next_transaction = transaction->t_cpnext;
-                ret += journal_clean_one_cp_list(transaction->
-                                t_checkpoint_list, &released);
-                if (need_resched())
-                        goto out;
-                if (released)
-                        continue;
-                /*
-                 * It is essential that we are as careful as in the case of
-                 * t_checkpoint_list with removing the buffer from the list as
-                 * we can possibly see not yet submitted buffers on io_list
-                 */
-                ret += journal_clean_one_cp_list(transaction->
-                                t_checkpoint_io_list, &released);
-                if (need_resched())
-                        goto out;
+                jh = transaction->t_checkpoint_list;
+                if (jh) {
+                        struct journal_head *last_jh = jh->b_cpprev;
+                        struct journal_head *next_jh = jh;
+
+                        do {
+                                jh = next_jh;
+                                next_jh = jh->b_cpnext;
+                                /* Use trylock because of the ranknig */
+                                if (jbd_trylock_bh_state(jh2bh(jh)))
+                                        ret += __try_to_free_cp_buf(jh);
+                                /*
+                                 * This function only frees up some memory
+                                 * if possible so we dont have an obligation
+                                 * to finish processing. Bail out if preemption
+                                 * requested:
+                                 */
+                                if (need_resched())
+                                        goto out;
+                        } while (jh != last_jh);
+                }
         } while (transaction != last_transaction);
 out:
         return ret;
@@ -571,22 +516,18 @@ out:
  * buffer updates committed in that transaction have safely been stored
  * elsewhere on disk.  To achieve this, all of the buffers in a
  * transaction need to be maintained on the transaction's checkpoint
- * lists until they have been rewritten, at which point this function is
+ * list until they have been rewritten, at which point this function is
  * called to remove the buffer from the existing transaction's
- * checkpoint lists.
- *
- * The function returns 1 if it frees the transaction, 0 otherwise.
+ * checkpoint list.
  *
  * This function is called with the journal locked.
  * This function is called with j_list_lock held.
- * This function is called with jbd_lock_bh_state(jh2bh(jh))
  */
 
-int __journal_remove_checkpoint(struct journal_head *jh)
+void __journal_remove_checkpoint(struct journal_head *jh)
 {
         transaction_t *transaction;
         journal_t *journal;
-        int ret = 0;
 
         JBUFFER_TRACE(jh, "entry");
 
@@ -597,10 +538,8 @@ int __journal_remove_checkpoint(struct journal_head *jh)
         journal = transaction->t_journal;
 
         __buffer_unlink(jh);
-        jh->b_cp_transaction = NULL;
 
-        if (transaction->t_checkpoint_list != NULL ||
-            transaction->t_checkpoint_io_list != NULL)
+        if (transaction->t_checkpoint_list != NULL)
                 goto out;
         JBUFFER_TRACE(jh, "transaction has no more buffers");
 
@@ -626,10 +565,8 @@ int __journal_remove_checkpoint(struct journal_head *jh)
         /* Just in case anybody was waiting for more transactions to be
            checkpointed... */
         wake_up(&journal->j_wait_logspace);
-        ret = 1;
 out:
         JBUFFER_TRACE(jh, "exit");
-        return ret;
 }
 
 /*
@@ -691,7 +628,6 @@ void __journal_drop_transaction(journal_t *journal, transaction_t *transaction)
         J_ASSERT(transaction->t_shadow_list == NULL);
         J_ASSERT(transaction->t_log_list == NULL);
         J_ASSERT(transaction->t_checkpoint_list == NULL);
-        J_ASSERT(transaction->t_checkpoint_io_list == NULL);
         J_ASSERT(transaction->t_updates == 0);
         J_ASSERT(journal->j_committing_transaction != transaction);
         J_ASSERT(journal->j_running_transaction != transaction);
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index 29e62d98bae6..002ad2bbc769 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -829,8 +829,7 @@ restart_loop:
         journal->j_committing_transaction = NULL;
         spin_unlock(&journal->j_state_lock);
 
-        if (commit_transaction->t_checkpoint_list == NULL &&
-            commit_transaction->t_checkpoint_io_list == NULL) {
+        if (commit_transaction->t_checkpoint_list == NULL) {
                 __journal_drop_transaction(journal, commit_transaction);
         } else {
                 if (journal->j_checkpoint_transactions == NULL) {
diff --git a/fs/lockd/clntlock.c b/fs/lockd/clntlock.c
index 3eaf6e701087..da6354baa0b8 100644
--- a/fs/lockd/clntlock.c
+++ b/fs/lockd/clntlock.c
@@ -111,9 +111,10 @@ long nlmclnt_block(struct nlm_rqst *req, long timeout)
 /*
  * The server lockd has called us back to tell us the lock was granted
  */
-u32
-nlmclnt_grant(struct nlm_lock *lock)
+u32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *lock)
 {
+        const struct file_lock *fl = &lock->fl;
+        const struct nfs_fh *fh = &lock->fh;
         struct nlm_wait *block;
         u32 res = nlm_lck_denied;
 
@@ -122,14 +123,20 @@ nlmclnt_grant(struct nlm_lock *lock)
          * Warning: must not use cookie to match it!
          */
         list_for_each_entry(block, &nlm_blocked, b_list) {
-                if (nlm_compare_locks(block->b_lock, &lock->fl)) {
-                        /* Alright, we found a lock. Set the return status
-                         * and wake up the caller
-                         */
-                        block->b_status = NLM_LCK_GRANTED;
-                        wake_up(&block->b_wait);
-                        res = nlm_granted;
-                }
+                struct file_lock *fl_blocked = block->b_lock;
+
+                if (!nlm_compare_locks(fl_blocked, fl))
+                        continue;
+                if (!nlm_cmp_addr(&block->b_host->h_addr, addr))
+                        continue;
+                if (nfs_compare_fh(NFS_FH(fl_blocked->fl_file->f_dentry->d_inode) ,fh) != 0)
+                        continue;
+                /* Alright, we found a lock. Set the return status
+                 * and wake up the caller
+                 */
+                block->b_status = NLM_LCK_GRANTED;
+                wake_up(&block->b_wait);
+                res = nlm_granted;
         }
         return res;
 }
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 4063095d849e..b10f913aa06a 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -228,7 +228,7 @@ nlm4svc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
         resp->cookie = argp->cookie;
 
         dprintk("lockd: GRANTED       called\n");
-        resp->status = nlmclnt_grant(&argp->lock);
+        resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
         dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
         return rpc_success;
 }
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 3bc437e0cf5b..35681d9cf1fc 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -256,7 +256,7 @@ nlmsvc_proc_granted(struct svc_rqst *rqstp, struct nlm_args *argp,
         resp->cookie = argp->cookie;
 
         dprintk("lockd: GRANTED       called\n");
-        resp->status = nlmclnt_grant(&argp->lock);
+        resp->status = nlmclnt_grant(&rqstp->rq_addr, &argp->lock);
         dprintk("lockd: GRANTED       status %d\n", ntohl(resp->status));
         return rpc_success;
 }
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 42eb53b5293b..23ceaa7127b4 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -208,6 +208,9 @@ static inline void __dlm_set_joining_node(struct dlm_ctxt *dlm,
 #define DLM_LOCK_RES_IN_PROGRESS          0x00000010
 #define DLM_LOCK_RES_MIGRATING            0x00000020
 
+/* max milliseconds to wait to sync up a network failure with a node death */
+#define DLM_NODE_DEATH_WAIT_MAX (5 * 1000)
+
 #define DLM_PURGE_INTERVAL_MS   (8 * 1000)
 
 struct dlm_lock_resource
@@ -658,6 +661,7 @@ int dlm_launch_recovery_thread(struct dlm_ctxt *dlm);
 void dlm_complete_recovery_thread(struct dlm_ctxt *dlm);
 void dlm_wait_for_recovery(struct dlm_ctxt *dlm);
 int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node);
+int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout);
 
 void dlm_put(struct dlm_ctxt *dlm);
 struct dlm_ctxt *dlm_grab(struct dlm_ctxt *dlm);
diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c
index 6001b22a997d..f66e2d818ccd 100644
--- a/fs/ocfs2/dlm/dlmconvert.c
+++ b/fs/ocfs2/dlm/dlmconvert.c
@@ -392,6 +392,11 @@ static enum dlm_status dlm_send_remote_convert_request(struct dlm_ctxt *dlm,
         } else {
                 mlog_errno(tmpret);
                 if (dlm_is_host_down(tmpret)) {
+                        /* instead of logging the same network error over
+                         * and over, sleep here and wait for the heartbeat
+                         * to notice the node is dead.  times out after 5s. */
+                        dlm_wait_for_node_death(dlm, res->owner, 
+                                                DLM_NODE_DEATH_WAIT_MAX);
                         ret = DLM_RECOVERING;
                         mlog(0, "node %u died so returning DLM_RECOVERING "
                              "from convert message!\n", res->owner);
@@ -421,7 +426,7 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
         struct dlm_lockstatus *lksb;
         enum dlm_status status = DLM_NORMAL;
         u32 flags;
-        int call_ast = 0, kick_thread = 0;
+        int call_ast = 0, kick_thread = 0, ast_reserved = 0;
 
         if (!dlm_grab(dlm)) {
                 dlm_error(DLM_REJECTED);
@@ -490,6 +495,7 @@ int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data)
         status = __dlm_lockres_state_to_status(res);
         if (status == DLM_NORMAL) {
                 __dlm_lockres_reserve_ast(res);
+                ast_reserved = 1;
                 res->state |= DLM_LOCK_RES_IN_PROGRESS;
                 status = __dlmconvert_master(dlm, res, lock, flags,
                                              cnv->requested_type,
@@ -512,10 +518,10 @@ leave:
         else
                 dlm_lock_put(lock);
 
-        /* either queue the ast or release it */
+        /* either queue the ast or release it, if reserved */
         if (call_ast)
                 dlm_queue_ast(dlm, lock);
-        else
+        else if (ast_reserved)
                 dlm_lockres_release_ast(dlm, res);
 
         if (kick_thread)
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index d1a0038557a3..671d4ff222cc 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -220,6 +220,17 @@ static enum dlm_status dlmlock_remote(struct dlm_ctxt *dlm,
                         dlm_error(status);
                 dlm_revert_pending_lock(res, lock);
                 dlm_lock_put(lock);
+        } else if (dlm_is_recovery_lock(res->lockname.name, 
+                                        res->lockname.len)) {
+                /* special case for the $RECOVERY lock.
+                 * there will never be an AST delivered to put
+                 * this lock on the proper secondary queue
+                 * (granted), so do it manually. */
+                mlog(0, "%s: $RECOVERY lock for this node (%u) is "
+                     "mastered by %u; got lock, manually granting (no ast)\n",
+                     dlm->name, dlm->node_num, res->owner);
+                list_del_init(&lock->list);
+                list_add_tail(&lock->list, &res->granted);
         }
         spin_unlock(&res->spinlock);
 
@@ -646,7 +657,19 @@ retry_lock:
                         mlog(0, "retrying lock with migration/"
                              "recovery/in progress\n");
                         msleep(100);
-                        dlm_wait_for_recovery(dlm);
+                        /* no waiting for dlm_reco_thread */
+                        if (recovery) {
+                                if (status == DLM_RECOVERING) {
+                                        mlog(0, "%s: got RECOVERING "
+                                             "for $REOCVERY lock, master "
+                                             "was %u\n", dlm->name, 
+                                             res->owner);
+                                        dlm_wait_for_node_death(dlm, res->owner, 
+                                                        DLM_NODE_DEATH_WAIT_MAX);
+                                }
+                        } else {
+                                dlm_wait_for_recovery(dlm);
+                        }
                         goto retry_lock;
                 }
 
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index a3194fe173d9..2e2e95e69499 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -2482,7 +2482,9 @@ top:
                                 atomic_set(&mle->woken, 1);
                                 spin_unlock(&mle->spinlock);
                                 wake_up(&mle->wq);
-                                /* final put will take care of list removal */
+                                /* do not need events any longer, so detach 
+                                 * from heartbeat */
+                                __dlm_mle_detach_hb_events(dlm, mle);
                                 __dlm_put_mle(mle);
                         }
                         continue;
@@ -2537,6 +2539,9 @@ top:
                         spin_unlock(&res->spinlock);
                         dlm_lockres_put(res);
 
+                        /* about to get rid of mle, detach from heartbeat */
+                        __dlm_mle_detach_hb_events(dlm, mle);
+
                         /* dump the mle */
                         spin_lock(&dlm->master_lock);
                         __dlm_put_mle(mle);
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 186e9a76aa58..ed76bda1a534 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -278,6 +278,24 @@ int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node)
         return dead;
 }
 
+int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout)
+{
+        if (timeout) {
+                mlog(ML_NOTICE, "%s: waiting %dms for notification of "
+                     "death of node %u\n", dlm->name, timeout, node);
+                wait_event_timeout(dlm->dlm_reco_thread_wq,
+                           dlm_is_node_dead(dlm, node),
+                           msecs_to_jiffies(timeout));
+        } else {
+                mlog(ML_NOTICE, "%s: waiting indefinitely for notification "
+                     "of death of node %u\n", dlm->name, node);
+                wait_event(dlm->dlm_reco_thread_wq,
+                           dlm_is_node_dead(dlm, node));
+        }
+        /* for now, return 0 */
+        return 0;
+}
+
 /* callers of the top-level api calls (dlmlock/dlmunlock) should
  * block on the dlm->reco.event when recovery is in progress.
  * the dlm recovery thread will set this state when it begins
@@ -2032,6 +2050,30 @@ again:
                              dlm->reco.new_master);
                         status = -EEXIST;
                 } else {
+                        status = 0;
+
+                        /* see if recovery was already finished elsewhere */
+                        spin_lock(&dlm->spinlock);
+                        if (dlm->reco.dead_node == O2NM_INVALID_NODE_NUM) {
+                                status = -EINVAL;       
+                                mlog(0, "%s: got reco EX lock, but "
+                                     "node got recovered already\n", dlm->name);
+                                if (dlm->reco.new_master != O2NM_INVALID_NODE_NUM) {
+                                        mlog(ML_ERROR, "%s: new master is %u "
+                                             "but no dead node!\n", 
+                                             dlm->name, dlm->reco.new_master);
+                                        BUG();
+                                }
+                        }
+                        spin_unlock(&dlm->spinlock);
+                }
+
+                /* if this node has actually become the recovery master,
+                 * set the master and send the messages to begin recovery */
+                if (!status) {
+                        mlog(0, "%s: dead=%u, this=%u, sending "
+                             "begin_reco now\n", dlm->name, 
+                             dlm->reco.dead_node, dlm->node_num);
                         status = dlm_send_begin_reco_message(dlm,
                                       dlm->reco.dead_node);
                         /* this always succeeds */
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index fa0bcac5ceae..d329c9df90ae 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -1584,10 +1584,9 @@ static int ocfs2_commit_thread(void *arg)
         while (!(kthread_should_stop() &&
                  atomic_read(&journal->j_num_trans) == 0)) {
 
-                wait_event_interruptible_timeout(osb->checkpoint_event,
-                                                 atomic_read(&journal->j_num_trans)
-                                                 || kthread_should_stop(),
-                                                 OCFS2_CHECKPOINT_INTERVAL);
+                wait_event_interruptible(osb->checkpoint_event,
+                                         atomic_read(&journal->j_num_trans)
+                                         || kthread_should_stop());
 
                 status = ocfs2_commit_cache(osb);
                 if (status < 0)
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index 7d0a816184fa..2f3a6acdac45 100644
--- a/fs/ocfs2/journal.h
+++ b/fs/ocfs2/journal.h
@@ -29,8 +29,6 @@
 #include <linux/fs.h>
 #include <linux/jbd.h>
 
-#define OCFS2_CHECKPOINT_INTERVAL        (8 * HZ)
-
 enum ocfs2_journal_state {
         OCFS2_JOURNAL_FREE = 0,
         OCFS2_JOURNAL_LOADED,
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 6573f31f1fd9..075d3e945602 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -204,10 +204,6 @@ int proc_fill_super(struct super_block *s, void *data, int silent)
         root_inode = proc_get_inode(s, PROC_ROOT_INO, &proc_root);
         if (!root_inode)
                 goto out_no_root;
-        /*
-         * Fixup the root inode's nlink value
-         */
-        root_inode->i_nlink += nr_processes();
         root_inode->i_uid = 0;
         root_inode->i_gid = 0;
         s->s_root = d_alloc_root(root_inode);
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 68896283c8ae..c3fd3611112f 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -80,16 +80,16 @@ void __init proc_root_init(void)
         proc_bus = proc_mkdir("bus", NULL);
 }
 
-static struct dentry *proc_root_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
+static int proc_root_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat
+)
 {
-        /*
-         * nr_threads is actually protected by the tasklist_lock;
-         * however, it's conventional to do reads, especially for
-         * reporting, without any locking whatsoever.
-         */
-        if (dir->i_ino == PROC_ROOT_INO) /* check for safety... */
-                dir->i_nlink = proc_root.nlink + nr_threads;
+        generic_fillattr(dentry->d_inode, stat);
+        stat->nlink = proc_root.nlink + nr_processes();
+        return 0;
+}
 
+static struct dentry *proc_root_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
+{
         if (!proc_lookup(dir, dentry, nd)) {
                 return NULL;
         }
@@ -134,6 +134,7 @@ static struct file_operations proc_root_operations = {
  */
 static struct inode_operations proc_root_inode_operations = {
         .lookup         = proc_root_lookup,
+        .getattr        = proc_root_getattr,
 };
 
 /*
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index ef5e5414e7a8..d63da756eb49 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -1124,8 +1124,6 @@ static void handle_attrs(struct super_block *s)
                                          "reiserfs: cannot support attributes until flag is set in super-block");
                         REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS);
                 }
-        } else if (le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared) {
-                REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ATTRS);
         }
 }
 
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index 43de3ba83332..ab8894c3b9e5 100644
--- a/fs/reiserfs/xattr_acl.c
+++ b/fs/reiserfs/xattr_acl.c
@@ -228,7 +228,8 @@ struct posix_acl *reiserfs_get_acl(struct inode *inode, int type)
                 acl = ERR_PTR(retval);
         } else {
                 acl = posix_acl_from_disk(value, retval);
-                *p_acl = posix_acl_dup(acl);
+                if (!IS_ERR(acl))
+                        *p_acl = posix_acl_dup(acl);
         }
 
         kfree(value);
diff --git a/fs/select.c b/fs/select.c
index bc60a3e14ef3..1815a57d2255 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -398,11 +398,15 @@ asmlinkage long sys_select(int n, fd_set __user *inp, fd_set __user *outp,
         ret = core_sys_select(n, inp, outp, exp, &timeout);
 
         if (tvp) {
+                struct timeval rtv;
+
                 if (current->personality & STICKY_TIMEOUTS)
                         goto sticky;
-                tv.tv_usec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ));
-                tv.tv_sec = timeout;
-                if (copy_to_user(tvp, &tv, sizeof(tv))) {
+                rtv.tv_usec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ));
+                rtv.tv_sec = timeout;
+                if (timeval_compare(&rtv, &tv) >= 0)
+                        rtv = tv;
+                if (copy_to_user(tvp, &rtv, sizeof(rtv))) {
 sticky:
                         /*
                          * If an application puts its timeval in read-only
@@ -460,11 +464,16 @@ asmlinkage long sys_pselect7(int n, fd_set __user *inp, fd_set __user *outp,
         ret = core_sys_select(n, inp, outp, exp, &timeout);
 
         if (tsp) {
+                struct timespec rts;
+
                 if (current->personality & STICKY_TIMEOUTS)
                         goto sticky;
-                ts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) * 1000;
-                ts.tv_sec = timeout;
-                if (copy_to_user(tsp, &ts, sizeof(ts))) {
+                rts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) *
+                                                1000;
+                rts.tv_sec = timeout;
+                if (timespec_compare(&rts, &ts) >= 0)
+                        rts = ts;
+                if (copy_to_user(tsp, &rts, sizeof(rts))) {
 sticky:
                         /*
                          * If an application puts its timeval in read-only
@@ -758,12 +767,17 @@ asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
                 sigprocmask(SIG_SETMASK, &sigsaved, NULL);
 
         if (tsp && timeout >= 0) {
+                struct timespec rts;
+
                 if (current->personality & STICKY_TIMEOUTS)
                         goto sticky;
                 /* Yes, we know it's actually an s64, but it's also positive. */
-                ts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) * 1000;
-                ts.tv_sec = timeout;
-                if (copy_to_user(tsp, &ts, sizeof(ts))) {
+                rts.tv_nsec = jiffies_to_usecs(do_div((*(u64*)&timeout), HZ)) *
+                                                1000;
+                rts.tv_sec = timeout;
+                if (timespec_compare(&rts, &ts) >= 0)
+                        rts = ts;
+                if (copy_to_user(tsp, &rts, sizeof(rts))) {
                 sticky:
                         /*
                          * If an application puts its timeval in read-only
diff --git a/fs/stat.c b/fs/stat.c
index 24211b030f39..9948cc1685a4 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -261,6 +261,7 @@ asmlinkage long sys_newlstat(char __user *filename, struct stat __user *statbuf)
         return error;
 }
 
+#ifndef __ARCH_WANT_STAT64
 asmlinkage long sys_newfstatat(int dfd, char __user *filename,
                                 struct stat __user *statbuf, int flag)
 {
@@ -281,6 +282,7 @@ asmlinkage long sys_newfstatat(int dfd, char __user *filename,
 out:
         return error;
 }
+#endif
 
 asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf)
 {
@@ -395,6 +397,26 @@ asmlinkage long sys_fstat64(unsigned long fd, struct stat64 __user * statbuf)
         return error;
 }
 
+asmlinkage long sys_fstatat64(int dfd, char __user *filename,
+                               struct stat64 __user *statbuf, int flag)
+{
+        struct kstat stat;
+        int error = -EINVAL;
+
+        if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0)
+                goto out;
+
+        if (flag & AT_SYMLINK_NOFOLLOW)
+                error = vfs_lstat_fd(dfd, filename, &stat);
+        else
+                error = vfs_stat_fd(dfd, filename, &stat);
+
+        if (!error)
+                error = cp_new_stat64(&stat, statbuf);
+
+out:
+        return error;
+}
 #endif /* __ARCH_WANT_STAT64 */
 
 void inode_add_bytes(struct inode *inode, loff_t bytes)
diff --git a/fs/super.c b/fs/super.c
index 30294218fa63..e20b5580afd5 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -666,6 +666,16 @@ static int test_bdev_super(struct super_block *s, void *data)
         return (void *)s->s_bdev == data;
 }
 
+static void bdev_uevent(struct block_device *bdev, enum kobject_action action)
+{
+        if (bdev->bd_disk) {
+                if (bdev->bd_part)
+                        kobject_uevent(&bdev->bd_part->kobj, action);
+                else
+                        kobject_uevent(&bdev->bd_disk->kobj, action);
+        }
+}
+
 struct super_block *get_sb_bdev(struct file_system_type *fs_type,
         int flags, const char *dev_name, void *data,
         int (*fill_super)(struct super_block *, void *, int))
@@ -707,8 +717,10 @@ struct super_block *get_sb_bdev(struct file_system_type *fs_type,
                         up_write(&s->s_umount);
                         deactivate_super(s);
                         s = ERR_PTR(error);
-                } else
+                } else {
                         s->s_flags |= MS_ACTIVE;
+                        bdev_uevent(bdev, KOBJ_MOUNT);
+                }
         }
 
         return s;
@@ -724,6 +736,7 @@ void kill_block_super(struct super_block *sb)
 {
         struct block_device *bdev = sb->s_bdev;
 
+        bdev_uevent(bdev, KOBJ_UMOUNT);
         generic_shutdown_super(sb);
         sync_blockdev(bdev);
         close_bdev_excl(bdev);