#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/buffer_head.h>
+#include <linux/capability.h>
+#include <linux/quotaops.h>
/* Check validity of generic quotactl commands */
static int generic_quotactl_valid(struct super_block *sb, int type, int cmd, qid_t id)
sync_blockdev(sb->s_bdev);
/* Now when everything is written we can discard the pagecache so
- * that userspace sees the changes. We need i_sem and so we could
- * not do it inside dqonoff_sem. Moreover we need to be carefull
+ * that userspace sees the changes. We need i_mutex and so we could
+ * not do it inside dqonoff_mutex. Moreover we need to be carefull
* about races with quotaoff() (that is the reason why we have own
* reference to inode). */
- down(&sb_dqopt(sb)->dqonoff_sem);
+ mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
discard[cnt] = NULL;
if (type != -1 && cnt != type)
continue;
discard[cnt] = igrab(sb_dqopt(sb)->files[cnt]);
}
- up(&sb_dqopt(sb)->dqonoff_sem);
+ mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (discard[cnt]) {
- down(&discard[cnt]->i_sem);
+ mutex_lock(&discard[cnt]->i_mutex);
truncate_inode_pages(&discard[cnt]->i_data, 0);
- up(&discard[cnt]->i_sem);
+ mutex_unlock(&discard[cnt]->i_mutex);
iput(discard[cnt]);
}
}