Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 48 insertions, 28 deletions

diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index f0ad05f38022..59125fb36d42 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -12,6 +12,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/time.h>
 #include <asm/uaccess.h>
@@ -246,7 +247,7 @@ static int finish_unfinished(struct super_block *s)
                         retval = remove_save_link_only(s, &save_link_key, 0);
                         continue;
                 }
-                vfs_dq_init(inode);
+                dquot_initialize(inode);
 
                 if (truncate && S_ISDIR(inode->i_mode)) {
                         /* We got a truncate request for a dir which is impossible.
@@ -465,7 +466,7 @@ static void reiserfs_put_super(struct super_block *s)
         struct reiserfs_transaction_handle th;
         th.t_trans_id = 0;
 
-        lock_kernel();
+        reiserfs_write_lock(s);
 
         if (s->s_dirt)
                 reiserfs_write_super(s);
@@ -499,10 +500,10 @@ static void reiserfs_put_super(struct super_block *s)
 
         reiserfs_proc_info_done(s);
 
+        reiserfs_write_unlock(s);
+        mutex_destroy(&REISERFS_SB(s)->lock);
         kfree(s->s_fs_info);
         s->s_fs_info = NULL;
-
-        unlock_kernel();
 }
 
 static struct kmem_cache *reiserfs_inode_cachep;
@@ -554,25 +555,33 @@ static void reiserfs_dirty_inode(struct inode *inode)
         struct reiserfs_transaction_handle th;
 
         int err = 0;
+        int lock_depth;
+
         if (inode->i_sb->s_flags & MS_RDONLY) {
                 reiserfs_warning(inode->i_sb, "clm-6006",
                                  "writing inode %lu on readonly FS",
                                  inode->i_ino);
                 return;
         }
-        reiserfs_write_lock(inode->i_sb);
+        lock_depth = reiserfs_write_lock_once(inode->i_sb);
 
         /* this is really only used for atime updates, so they don't have
          ** to be included in O_SYNC or fsync
          */
         err = journal_begin(&th, inode->i_sb, 1);
-        if (err) {
-                reiserfs_write_unlock(inode->i_sb);
-                return;
-        }
+        if (err)
+                goto out;
+
         reiserfs_update_sd(&th, inode);
         journal_end(&th, inode->i_sb, 1);
-        reiserfs_write_unlock(inode->i_sb);
+
+out:
+        reiserfs_write_unlock_once(inode->i_sb, lock_depth);
+}
+
+static void reiserfs_clear_inode(struct inode *inode)
+{
+        dquot_drop(inode);
 }
 
 #ifdef CONFIG_QUOTA
@@ -587,6 +596,7 @@ static const struct super_operations reiserfs_sops = {
         .destroy_inode = reiserfs_destroy_inode,
         .write_inode = reiserfs_write_inode,
         .dirty_inode = reiserfs_dirty_inode,
+        .clear_inode = reiserfs_clear_inode,
         .delete_inode = reiserfs_delete_inode,
         .put_super = reiserfs_put_super,
         .write_super = reiserfs_write_super,
@@ -613,13 +623,6 @@ static int reiserfs_write_info(struct super_block *, int);
 static int reiserfs_quota_on(struct super_block *, int, int, char *, int);
 
 static const struct dquot_operations reiserfs_quota_operations = {
-        .initialize = dquot_initialize,
-        .drop = dquot_drop,
-        .alloc_space = dquot_alloc_space,
-        .alloc_inode = dquot_alloc_inode,
-        .free_space = dquot_free_space,
-        .free_inode = dquot_free_inode,
-        .transfer = dquot_transfer,
         .write_dquot = reiserfs_write_dquot,
         .acquire_dquot = reiserfs_acquire_dquot,
         .release_dquot = reiserfs_release_dquot,
@@ -1168,11 +1171,14 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
         unsigned int qfmt = 0;
 #ifdef CONFIG_QUOTA
         int i;
+#endif
+
+        reiserfs_write_lock(s);
 
+#ifdef CONFIG_QUOTA
         memcpy(qf_names, REISERFS_SB(s)->s_qf_names, sizeof(qf_names));
 #endif
 
-        lock_kernel();
         rs = SB_DISK_SUPER_BLOCK(s);
 
         if (!reiserfs_parse_options
@@ -1295,12 +1301,12 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
 
 out_ok:
         replace_mount_options(s, new_opts);
-        unlock_kernel();
+        reiserfs_write_unlock(s);
         return 0;
 
 out_err:
         kfree(new_opts);
-        unlock_kernel();
+        reiserfs_write_unlock(s);
         return err;
 }
 
@@ -1404,7 +1410,9 @@ static int read_super_block(struct super_block *s, int offset)
 static int reread_meta_blocks(struct super_block *s)
 {
         ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s)));
+        reiserfs_write_unlock(s);
         wait_on_buffer(SB_BUFFER_WITH_SB(s));
+        reiserfs_write_lock(s);
         if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
                 reiserfs_warning(s, "reiserfs-2504", "error reading the super");
                 return 1;
@@ -1611,10 +1619,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
         save_mount_options(s, data);
 
         sbi = kzalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
-        if (!sbi) {
-                errval = -ENOMEM;
-                goto error;
-        }
+        if (!sbi)
+                return -ENOMEM;
         s->s_fs_info = sbi;
         /* Set default values for options: non-aggressive tails, RO on errors */
         REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL);
@@ -1627,6 +1633,20 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
         /* setup default block allocator options */
         reiserfs_init_alloc_options(s);
 
+        mutex_init(&REISERFS_SB(s)->lock);
+        REISERFS_SB(s)->lock_depth = -1;
+
+        /*
+         * This function is called with the bkl, which also was the old
+         * locking used here.
+         * do_journal_begin() will soon check if we hold the lock (ie: was the
+         * bkl). This is likely because do_journal_begin() has several another
+         * callers because at this time, it doesn't seem to be necessary to
+         * protect against anything.
+         * Anyway, let's be conservative and lock for now.
+         */
+        reiserfs_write_lock(s);
+
         jdev_name = NULL;
         if (reiserfs_parse_options
             (s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name,
@@ -1852,6 +1872,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
         init_waitqueue_head(&(sbi->s_wait));
         spin_lock_init(&sbi->bitmap_lock);
 
+        reiserfs_write_unlock(s);
+
         return (0);
 
 error:
@@ -1859,6 +1881,8 @@ error:
                 journal_release_error(NULL, s);
         }
 
+        reiserfs_write_unlock(s);
+
         reiserfs_free_bitmap_cache(s);
         if (SB_BUFFER_WITH_SB(s))
                 brelse(SB_BUFFER_WITH_SB(s));
@@ -2196,8 +2220,6 @@ static int __init init_reiserfs_fs(void)
         }
 
         reiserfs_proc_info_global_init();
-        reiserfs_proc_register_global("version",
-                                      reiserfs_global_version_in_proc);
 
         ret = register_filesystem(&reiserfs_fs_type);
 
@@ -2205,7 +2227,6 @@ static int __init init_reiserfs_fs(void)
                 return 0;
         }
 
-        reiserfs_proc_unregister_global("version");
         reiserfs_proc_info_global_done();
         destroy_inodecache();
 
@@ -2214,7 +2235,6 @@ static int __init init_reiserfs_fs(void)
 
 static void __exit exit_reiserfs_fs(void)
 {
-        reiserfs_proc_unregister_global("version");
         reiserfs_proc_info_global_done();
         unregister_filesystem(&reiserfs_fs_type);
         destroy_inodecache();