quota: Convert dqio_mutex to rwsem
Convert dqio_mutex to rwsem and call it dqio_sem. No functional changes
yet.
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index 32c5a40..1311eff 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -520,7 +520,7 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode,
mlog_errno(status);
goto out_drop_lock;
}
- mutex_lock(&sb_dqopt(sb)->dqio_mutex);
+ down_write(&sb_dqopt(sb)->dqio_sem);
spin_lock(&dq_data_lock);
/* Add usage from quota entry into quota changes
* of our node. Auxiliary variables are important
@@ -553,7 +553,7 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode,
unlock_buffer(qbh);
ocfs2_journal_dirty(handle, qbh);
out_commit:
- mutex_unlock(&sb_dqopt(sb)->dqio_mutex);
+ up_write(&sb_dqopt(sb)->dqio_sem);
ocfs2_commit_trans(OCFS2_SB(sb), handle);
out_drop_lock:
ocfs2_unlock_global_qf(oinfo, 1);
@@ -693,7 +693,7 @@ static int ocfs2_local_read_info(struct super_block *sb, int type)
/* We don't need the lock and we have to acquire quota file locks
* which will later depend on this lock */
- mutex_unlock(&sb_dqopt(sb)->dqio_mutex);
+ up_write(&sb_dqopt(sb)->dqio_sem);
info->dqi_max_spc_limit = 0x7fffffffffffffffLL;
info->dqi_max_ino_limit = 0x7fffffffffffffffLL;
oinfo = kmalloc(sizeof(struct ocfs2_mem_dqinfo), GFP_NOFS);
@@ -772,7 +772,7 @@ static int ocfs2_local_read_info(struct super_block *sb, int type)
goto out_err;
}
- mutex_lock(&sb_dqopt(sb)->dqio_mutex);
+ down_write(&sb_dqopt(sb)->dqio_sem);
return 0;
out_err:
if (oinfo) {
@@ -786,7 +786,7 @@ static int ocfs2_local_read_info(struct super_block *sb, int type)
kfree(oinfo);
}
brelse(bh);
- mutex_lock(&sb_dqopt(sb)->dqio_mutex);
+ down_write(&sb_dqopt(sb)->dqio_sem);
return -1;
}