xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

quota: Convert dqio_mutex to rwsem

Browse Source 
Convert dqio_mutex to rwsem and call it dqio_sem. No functional changes
yet.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2017-06-08 14:39:48 +02:00
parent aae4e7a8bc
commit bc8230ee8e
7 changed files with 36 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
fs/ocfs2/quota_local.c
View File

@@ -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 @@ out_err:
kfree(oinfo);
}
brelse(bh);
mutex_lock(&sb_dqopt(sb)->dqio_mutex);
down_write(&sb_dqopt(sb)->dqio_sem);
return -1;
}