nilfs2: use root object to get ifile
This rewrites functions using ifile so that they get ifile from
nilfs_root object, and will remove sbi->s_ifile. Some functions that
don't know the root object are extended to receive it from caller.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 9cf7138..2a6b74e 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -763,12 +763,12 @@
}
}
-static int nilfs_test_metadata_dirty(struct nilfs_sb_info *sbi)
+static int nilfs_test_metadata_dirty(struct the_nilfs *nilfs,
+ struct nilfs_root *root)
{
- struct the_nilfs *nilfs = sbi->s_nilfs;
int ret = 0;
- if (nilfs_mdt_fetch_dirty(sbi->s_ifile))
+ if (nilfs_mdt_fetch_dirty(root->ifile))
ret++;
if (nilfs_mdt_fetch_dirty(nilfs->ns_cpfile))
ret++;
@@ -793,7 +793,7 @@
struct nilfs_sb_info *sbi = sci->sc_sbi;
int ret = 0;
- if (nilfs_test_metadata_dirty(sbi))
+ if (nilfs_test_metadata_dirty(sbi->s_nilfs, sci->sc_root))
set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
spin_lock(&sbi->s_inode_lock);
@@ -809,7 +809,7 @@
struct nilfs_sb_info *sbi = sci->sc_sbi;
struct the_nilfs *nilfs = sbi->s_nilfs;
- nilfs_mdt_clear_dirty(sbi->s_ifile);
+ nilfs_mdt_clear_dirty(sci->sc_root->ifile);
nilfs_mdt_clear_dirty(nilfs->ns_cpfile);
nilfs_mdt_clear_dirty(nilfs->ns_sufile);
nilfs_mdt_clear_dirty(nilfs_dat_inode(nilfs));
@@ -869,7 +869,8 @@
else
nilfs_checkpoint_set_minor(raw_cp);
- nilfs_write_inode_common(sbi->s_ifile, &raw_cp->cp_ifile_inode, 1);
+ nilfs_write_inode_common(sci->sc_root->ifile,
+ &raw_cp->cp_ifile_inode, 1);
nilfs_cpfile_put_checkpoint(nilfs->ns_cpfile, nilfs->ns_cno, bh_cp);
return 0;
@@ -894,13 +895,12 @@
}
}
-static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci,
- struct inode *ifile)
+static void nilfs_segctor_fill_in_file_bmap(struct nilfs_sc_info *sci)
{
struct nilfs_inode_info *ii;
list_for_each_entry(ii, &sci->sc_dirty_files, i_dirty) {
- nilfs_fill_in_file_bmap(ifile, ii);
+ nilfs_fill_in_file_bmap(sci->sc_root->ifile, ii);
set_bit(NILFS_I_COLLECTED, &ii->i_state);
}
}
@@ -1143,7 +1143,7 @@
sci->sc_stage.flags |= NILFS_CF_IFILE_STARTED;
/* Fall through */
case NILFS_ST_IFILE:
- err = nilfs_segctor_scan_file(sci, sbi->s_ifile,
+ err = nilfs_segctor_scan_file(sci, sci->sc_root->ifile,
&nilfs_sc_file_ops);
if (unlikely(err))
break;
@@ -1984,6 +1984,7 @@
struct nilfs_sb_info *sbi)
{
struct nilfs_inode_info *ii, *n;
+ struct inode *ifile = sci->sc_root->ifile;
spin_lock(&sbi->s_inode_lock);
retry:
@@ -1994,14 +1995,14 @@
spin_unlock(&sbi->s_inode_lock);
err = nilfs_ifile_get_inode_block(
- sbi->s_ifile, ii->vfs_inode.i_ino, &ibh);
+ ifile, ii->vfs_inode.i_ino, &ibh);
if (unlikely(err)) {
nilfs_warning(sbi->s_super, __func__,
"failed to get inode block.\n");
return err;
}
nilfs_mdt_mark_buffer_dirty(ibh);
- nilfs_mdt_mark_dirty(sbi->s_ifile);
+ nilfs_mdt_mark_dirty(ifile);
spin_lock(&sbi->s_inode_lock);
if (likely(!ii->i_bh))
ii->i_bh = ibh;
@@ -2058,7 +2059,7 @@
if (unlikely(err))
goto out;
- if (nilfs_test_metadata_dirty(sbi))
+ if (nilfs_test_metadata_dirty(nilfs, sci->sc_root))
set_bit(NILFS_SC_DIRTY, &sci->sc_flags);
if (nilfs_segctor_clean(sci))
@@ -2090,7 +2091,7 @@
goto failed;
if (sci->sc_stage.flags & NILFS_CF_IFILE_STARTED)
- nilfs_segctor_fill_in_file_bmap(sci, sbi->s_ifile);
+ nilfs_segctor_fill_in_file_bmap(sci);
if (mode == SC_LSEG_SR &&
sci->sc_stage.scnt >= NILFS_ST_CPFILE) {
@@ -2684,7 +2685,8 @@
/*
* Setup & clean-up functions
*/
-static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi)
+static struct nilfs_sc_info *nilfs_segctor_new(struct nilfs_sb_info *sbi,
+ struct nilfs_root *root)
{
struct nilfs_sc_info *sci;
@@ -2695,6 +2697,9 @@
sci->sc_sbi = sbi;
sci->sc_super = sbi->s_super;
+ nilfs_get_root(root);
+ sci->sc_root = root;
+
init_waitqueue_head(&sci->sc_wait_request);
init_waitqueue_head(&sci->sc_wait_daemon);
init_waitqueue_head(&sci->sc_wait_task);
@@ -2769,6 +2774,8 @@
WARN_ON(!list_empty(&sci->sc_segbufs));
WARN_ON(!list_empty(&sci->sc_write_logs));
+ nilfs_put_root(sci->sc_root);
+
down_write(&sbi->s_nilfs->ns_segctor_sem);
del_timer_sync(&sci->sc_timer);
@@ -2778,6 +2785,7 @@
/**
* nilfs_attach_segment_constructor - attach a segment constructor
* @sbi: nilfs_sb_info
+ * @root: root object of the current filesystem tree
*
* nilfs_attach_segment_constructor() allocates a struct nilfs_sc_info,
* initializes it, and starts the segment constructor.
@@ -2787,7 +2795,8 @@
*
* %-ENOMEM - Insufficient memory available.
*/
-int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi)
+int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi,
+ struct nilfs_root *root)
{
struct the_nilfs *nilfs = sbi->s_nilfs;
int err;
@@ -2801,7 +2810,7 @@
nilfs_detach_segment_constructor(sbi);
}
- sbi->s_sc_info = nilfs_segctor_new(sbi);
+ sbi->s_sc_info = nilfs_segctor_new(sbi, root);
if (!sbi->s_sc_info)
return -ENOMEM;