[PATCH 2/5] UBIFS: simplify dbg_dump_budg calling conventions
Artem Bityutskiy
dedekind1 at gmail.com
Mon Apr 4 10:44:54 EDT 2011
From: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
The current 'dbg_dump_budg()' calling convention is that the
'c->space_lock' spinlock is held. However, none of the callers
actually use it from contects which have 'c->space_lock' locked,
so all callers have to explicitely lock and unlock the spinlock.
This is not very sensible convention. This patch changes it and
makes 'dbg_dump_budg()' lock the spinlock instead of imposing this
to the callers. This simplifies the code a little.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy at nokia.com>
---
fs/ubifs/debug.c | 12 ++++--------
fs/ubifs/journal.c | 2 --
fs/ubifs/tnc_commit.c | 2 --
3 files changed, 4 insertions(+), 12 deletions(-)
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index 5e8d6d3..68014aa 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -610,7 +610,7 @@ void dbg_dump_budg(struct ubifs_info *c)
struct ubifs_gced_idx_leb *idx_gc;
long long available, outstanding, free;
- ubifs_assert(spin_is_locked(&c->space_lock));
+ spin_lock(&c->space_lock);
spin_lock(&dbg_lock);
printk(KERN_DEBUG "(pid %d) Budgeting info: budg_data_growth %lld, "
"budg_dd_growth %lld, budg_idx_growth %lld\n", current->pid,
@@ -655,6 +655,7 @@ void dbg_dump_budg(struct ubifs_info *c)
printk(KERN_DEBUG "\tavailable: %lld, outstanding %lld, free %lld\n",
available, outstanding, free);
spin_unlock(&dbg_lock);
+ spin_unlock(&c->space_lock);
}
void dbg_dump_lprop(const struct ubifs_info *c, const struct ubifs_lprops *lp)
@@ -1015,10 +1016,7 @@ out:
ubifs_msg("current lprops statistics dump");
dbg_dump_lstats(&lst);
-
- spin_lock(&c->space_lock);
dbg_dump_budg(c);
- spin_unlock(&c->space_lock);
dump_stack();
return -EINVAL;
}
@@ -2765,11 +2763,9 @@ static ssize_t write_debugfs_file(struct file *file, const char __user *buf,
if (file->f_path.dentry == d->dfs_dump_lprops)
dbg_dump_lprops(c);
- else if (file->f_path.dentry == d->dfs_dump_budg) {
- spin_lock(&c->space_lock);
+ else if (file->f_path.dentry == d->dfs_dump_budg)
dbg_dump_budg(c);
- spin_unlock(&c->space_lock);
- } else if (file->f_path.dentry == d->dfs_dump_tnc) {
+ else if (file->f_path.dentry == d->dfs_dump_tnc) {
mutex_lock(&c->tnc_mutex);
dbg_dump_tnc(c);
mutex_unlock(&c->tnc_mutex);
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index aed25e8..65d485f 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -380,10 +380,8 @@ out:
if (err == -ENOSPC) {
/* This are some budgeting problems, print useful information */
down_write(&c->commit_sem);
- spin_lock(&c->space_lock);
dbg_dump_stack();
dbg_dump_budg(c);
- spin_unlock(&c->space_lock);
dbg_dump_lprops(c);
cmt_retries = dbg_check_lprops(c);
up_write(&c->commit_sem);
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 9c376b9..66f066d 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -383,9 +383,7 @@ static int layout_in_gaps(struct ubifs_info *c, int cnt)
* option which forces in-the-gaps is enabled.
*/
ubifs_err("out of space");
- spin_lock(&c->space_lock);
dbg_dump_budg(c);
- spin_unlock(&c->space_lock);
dbg_dump_lprops(c);
}
/* Try to commit anyway */
--
1.7.2.3
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