The patch titled
reiserfs: convert j_lock to mutex
has been added to the -mm tree. Its filename is
reiserfs-convert-j_lock-to-mutex.patch
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Subject: reiserfs: convert j_lock to mutex
From: Jeff Mahoney <jeffm@xxxxxxxx>
j_lock is a semaphore but uses it as if it were a mutex. This patch converts
it to a mutex.
Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>
Cc: Matthew Wilcox <matthew@xxxxxx>
Cc: Chris Mason <chris.mason@xxxxxxxxxx>
Cc: Edward Shishkin <edward.shishkin@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/reiserfs/journal.c | 6 +++---
include/linux/reiserfs_fs_sb.h | 2 +-
2 files changed, 4 insertions(+), 4 deletions(-)
diff -puN fs/reiserfs/journal.c~reiserfs-convert-j_lock-to-mutex fs/reiserfs/journal.c
--- a/fs/reiserfs/journal.c~reiserfs-convert-j_lock-to-mutex
+++ a/fs/reiserfs/journal.c
@@ -558,13 +558,13 @@ static inline void insert_journal_hash(s
static inline void lock_journal(struct super_block *p_s_sb)
{
PROC_INFO_INC(p_s_sb, journal.lock_journal);
- down(&SB_JOURNAL(p_s_sb)->j_lock);
+ mutex_lock(&SB_JOURNAL(p_s_sb)->j_mutex);
}
/* unlock the current transaction */
static inline void unlock_journal(struct super_block *p_s_sb)
{
- up(&SB_JOURNAL(p_s_sb)->j_lock);
+ mutex_unlock(&SB_JOURNAL(p_s_sb)->j_mutex);
}
static inline void get_journal_list(struct reiserfs_journal_list *jl)
@@ -2837,7 +2837,7 @@ int journal_init(struct super_block *p_s
journal->j_last = NULL;
journal->j_first = NULL;
init_waitqueue_head(&(journal->j_join_wait));
- sema_init(&journal->j_lock, 1);
+ mutex_init(&journal->j_mutex);
sema_init(&journal->j_flush_sem, 1);
journal->j_trans_id = 10;
diff -puN include/linux/reiserfs_fs_sb.h~reiserfs-convert-j_lock-to-mutex include/linux/reiserfs_fs_sb.h
--- a/include/linux/reiserfs_fs_sb.h~reiserfs-convert-j_lock-to-mutex
+++ a/include/linux/reiserfs_fs_sb.h
@@ -193,7 +193,7 @@ struct reiserfs_journal {
struct buffer_head *j_header_bh;
time_t j_trans_start_time; /* time this transaction started */
- struct semaphore j_lock;
+ struct mutex j_mutex;
struct semaphore j_flush_sem;
wait_queue_head_t j_join_wait; /* wait for current transaction to finish before starting new one */
atomic_t j_jlock; /* lock for j_join_wait */
_
Patches currently in -mm which might be from jeffm@xxxxxxxx are
reiserfs-convert-j_lock-to-mutex.patch
reiserfs-convert-j_flush_sem-to-mutex.patch
reiserfs-convert-j_commit_lock-to-mutex.patch
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