Merge branch 'timers/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / fs / gfs2 / log.c

diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 4dcc7a8..6c6af9f 100644 (file)
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
- * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ * Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
  *
  * This copyrighted material is made available to anyone wishing to use,
  * modify, copy, or redistribute it subject to the terms and conditions
@@ -87,13 +87,13 @@ void gfs2_remove_from_ail(struct gfs2_bufdata *bd)
  */
 
 static void gfs2_ail1_start_one(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
+__releases(&sdp->sd_log_lock)
+__acquires(&sdp->sd_log_lock)
 {
        struct gfs2_bufdata *bd, *s;
        struct buffer_head *bh;
        int retry;
 
-       BUG_ON(!spin_is_locked(&sdp->sd_log_lock));
-
        do {
                retry = 0;
 
@@ -341,18 +341,14 @@ void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks)
 
 static u64 log_bmap(struct gfs2_sbd *sdp, unsigned int lbn)
 {
-       struct inode *inode = sdp->sd_jdesc->jd_inode;
-       int error;
-       struct buffer_head bh_map = { .b_state = 0, .b_blocknr = 0 };
-
-       bh_map.b_size = 1 << inode->i_blkbits;
-       error = gfs2_block_map(inode, lbn, 0, &bh_map);
-       if (error || !bh_map.b_blocknr)
-               printk(KERN_INFO "error=%d, dbn=%llu lbn=%u", error,
-                      (unsigned long long)bh_map.b_blocknr, lbn);
-       gfs2_assert_withdraw(sdp, !error && bh_map.b_blocknr);
-
-       return bh_map.b_blocknr;
+       struct gfs2_journal_extent *je;
+
+       list_for_each_entry(je, &sdp->sd_jdesc->extent_list, extent_list) {
+               if (lbn >= je->lblock && lbn < je->lblock + je->blocks)
+                       return je->dblock + lbn - je->lblock;
+       }
+
+       return -1;
 }
 
 /**
@@ -763,7 +759,7 @@ void __gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl)
 static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 {
        unsigned int reserved;
-       unsigned int old;
+       unsigned int unused;
 
        gfs2_log_lock(sdp);
 
@@ -775,19 +771,31 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
        sdp->sd_log_commited_revoke += tr->tr_num_revoke - tr->tr_num_revoke_rm;
        gfs2_assert_withdraw(sdp, ((int)sdp->sd_log_commited_revoke) >= 0);
        reserved = calc_reserved(sdp);
-       old = atomic_read(&sdp->sd_log_blks_free);
-       atomic_add(tr->tr_reserved - (reserved - sdp->sd_log_blks_reserved),
-                  &sdp->sd_log_blks_free);
-
-       gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) >= old);
+       gfs2_assert_withdraw(sdp, sdp->sd_log_blks_reserved + tr->tr_reserved >= reserved);
+       unused = sdp->sd_log_blks_reserved - reserved + tr->tr_reserved;
+       atomic_add(unused, &sdp->sd_log_blks_free);
        gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <=
                             sdp->sd_jdesc->jd_blocks);
-
        sdp->sd_log_blks_reserved = reserved;
 
        gfs2_log_unlock(sdp);
 }
 
+static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
+{
+       struct list_head *head = &tr->tr_list_buf;
+       struct gfs2_bufdata *bd;
+
+       gfs2_log_lock(sdp);
+       while (!list_empty(head)) {
+               bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr);
+               list_del_init(&bd->bd_list_tr);
+               tr->tr_num_buf--;
+       }
+       gfs2_log_unlock(sdp);
+       gfs2_assert_warn(sdp, !tr->tr_num_buf);
+}
+
 /**
  * gfs2_log_commit - Commit a transaction to the log
  * @sdp: the filesystem
@@ -799,7 +807,7 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr)
 {
        log_refund(sdp, tr);
-       lops_incore_commit(sdp, tr);
+       buf_lo_incore_commit(sdp, tr);
 
        sdp->sd_vfs->s_dirt = 1;
        up_read(&sdp->sd_log_flush_lock);