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Diffstat (limited to 'fs/ocfs2/dlmglue.c')
-rw-r--r--fs/ocfs2/dlmglue.c168
1 files changed, 154 insertions, 14 deletions
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 6e6cc0a2e5f7..f731ab491795 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -32,6 +32,7 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/time.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_DLM_GLUE
#include <cluster/masklog.h>
@@ -51,6 +52,7 @@
#include "slot_map.h"
#include "super.h"
#include "uptodate.h"
+#include "quota.h"
#include "buffer_head_io.h"
@@ -68,6 +70,7 @@ struct ocfs2_mask_waiter {
static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres);
static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres);
static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres);
+static struct ocfs2_super *ocfs2_get_qinfo_osb(struct ocfs2_lock_res *lockres);
/*
* Return value from ->downconvert_worker functions.
@@ -102,6 +105,7 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres,
static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres);
+static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres);
#define mlog_meta_lvb(__level, __lockres) ocfs2_dump_meta_lvb_info(__level, __PRETTY_FUNCTION__, __LINE__, __lockres)
@@ -111,8 +115,7 @@ static void ocfs2_dump_meta_lvb_info(u64 level,
unsigned int line,
struct ocfs2_lock_res *lockres)
{
- struct ocfs2_meta_lvb *lvb =
- (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ struct ocfs2_meta_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
mlog(level, "LVB information for %s (called from %s:%u):\n",
lockres->l_name, function, line);
@@ -258,6 +261,12 @@ static struct ocfs2_lock_res_ops ocfs2_flock_lops = {
.flags = 0,
};
+static struct ocfs2_lock_res_ops ocfs2_qinfo_lops = {
+ .set_lvb = ocfs2_set_qinfo_lvb,
+ .get_osb = ocfs2_get_qinfo_osb,
+ .flags = LOCK_TYPE_REQUIRES_REFRESH | LOCK_TYPE_USES_LVB,
+};
+
static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
{
return lockres->l_type == OCFS2_LOCK_TYPE_META ||
@@ -279,6 +288,13 @@ static inline struct ocfs2_dentry_lock *ocfs2_lock_res_dl(struct ocfs2_lock_res
return (struct ocfs2_dentry_lock *)lockres->l_priv;
}
+static inline struct ocfs2_mem_dqinfo *ocfs2_lock_res_qinfo(struct ocfs2_lock_res *lockres)
+{
+ BUG_ON(lockres->l_type != OCFS2_LOCK_TYPE_QINFO);
+
+ return (struct ocfs2_mem_dqinfo *)lockres->l_priv;
+}
+
static inline struct ocfs2_super *ocfs2_get_lockres_osb(struct ocfs2_lock_res *lockres)
{
if (lockres->l_ops->get_osb)
@@ -507,6 +523,13 @@ static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres)
return OCFS2_SB(inode->i_sb);
}
+static struct ocfs2_super *ocfs2_get_qinfo_osb(struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_mem_dqinfo *info = lockres->l_priv;
+
+ return OCFS2_SB(info->dqi_gi.dqi_sb);
+}
+
static struct ocfs2_super *ocfs2_get_file_osb(struct ocfs2_lock_res *lockres)
{
struct ocfs2_file_private *fp = lockres->l_priv;
@@ -609,6 +632,17 @@ void ocfs2_file_lock_res_init(struct ocfs2_lock_res *lockres,
lockres->l_flags |= OCFS2_LOCK_NOCACHE;
}
+void ocfs2_qinfo_lock_res_init(struct ocfs2_lock_res *lockres,
+ struct ocfs2_mem_dqinfo *info)
+{
+ ocfs2_lock_res_init_once(lockres);
+ ocfs2_build_lock_name(OCFS2_LOCK_TYPE_QINFO, info->dqi_gi.dqi_type,
+ 0, lockres->l_name);
+ ocfs2_lock_res_init_common(OCFS2_SB(info->dqi_gi.dqi_sb), lockres,
+ OCFS2_LOCK_TYPE_QINFO, &ocfs2_qinfo_lops,
+ info);
+}
+
void ocfs2_lock_res_free(struct ocfs2_lock_res *res)
{
mlog_entry_void();
@@ -1829,7 +1863,7 @@ static void __ocfs2_stuff_meta_lvb(struct inode *inode)
mlog_entry_void();
- lvb = (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
/*
* Invalidate the LVB of a deleted inode - this way other
@@ -1881,7 +1915,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
mlog_meta_lvb(0, lockres);
- lvb = (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
/* We're safe here without the lockres lock... */
spin_lock(&oi->ip_lock);
@@ -1916,8 +1950,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
static inline int ocfs2_meta_lvb_is_trustable(struct inode *inode,
struct ocfs2_lock_res *lockres)
{
- struct ocfs2_meta_lvb *lvb =
- (struct ocfs2_meta_lvb *)ocfs2_dlm_lvb(&lockres->l_lksb);
+ struct ocfs2_meta_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
if (lvb->lvb_version == OCFS2_LVB_VERSION
&& be32_to_cpu(lvb->lvb_igeneration) == inode->i_generation)
@@ -2024,7 +2057,7 @@ static int ocfs2_inode_lock_update(struct inode *inode,
} else {
/* Boo, we have to go to disk. */
/* read bh, cast, ocfs2_refresh_inode */
- status = ocfs2_read_block(inode, oi->ip_blkno, bh);
+ status = ocfs2_read_inode_block(inode, bh);
if (status < 0) {
mlog_errno(status);
goto bail_refresh;
@@ -2032,18 +2065,14 @@ static int ocfs2_inode_lock_update(struct inode *inode,
fe = (struct ocfs2_dinode *) (*bh)->b_data;
/* This is a good chance to make sure we're not
- * locking an invalid object.
+ * locking an invalid object. ocfs2_read_inode_block()
+ * already checked that the inode block is sane.
*
* We bug on a stale inode here because we checked
* above whether it was wiped from disk. The wiping
* node provides a guarantee that we receive that
* message and can mark the inode before dropping any
* locks associated with it. */
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe);
- status = -EIO;
- goto bail_refresh;
- }
mlog_bug_on_msg(inode->i_generation !=
le32_to_cpu(fe->i_generation),
"Invalid dinode %llu disk generation: %u "
@@ -2085,7 +2114,7 @@ static int ocfs2_assign_bh(struct inode *inode,
return 0;
}
- status = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, ret_bh);
+ status = ocfs2_read_inode_block(inode, ret_bh);
if (status < 0)
mlog_errno(status);
@@ -3449,6 +3478,117 @@ static int ocfs2_dentry_convert_worker(struct ocfs2_lock_res *lockres,
return UNBLOCK_CONTINUE_POST;
}
+static void ocfs2_set_qinfo_lvb(struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_qinfo_lvb *lvb;
+ struct ocfs2_mem_dqinfo *oinfo = ocfs2_lock_res_qinfo(lockres);
+ struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb,
+ oinfo->dqi_gi.dqi_type);
+
+ mlog_entry_void();
+
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
+ lvb->lvb_version = OCFS2_QINFO_LVB_VERSION;
+ lvb->lvb_bgrace = cpu_to_be32(info->dqi_bgrace);
+ lvb->lvb_igrace = cpu_to_be32(info->dqi_igrace);
+ lvb->lvb_syncms = cpu_to_be32(oinfo->dqi_syncms);
+ lvb->lvb_blocks = cpu_to_be32(oinfo->dqi_gi.dqi_blocks);
+ lvb->lvb_free_blk = cpu_to_be32(oinfo->dqi_gi.dqi_free_blk);
+ lvb->lvb_free_entry = cpu_to_be32(oinfo->dqi_gi.dqi_free_entry);
+
+ mlog_exit_void();
+}
+
+void ocfs2_qinfo_unlock(struct ocfs2_mem_dqinfo *oinfo, int ex)
+{
+ struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock;
+ struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
+
+ mlog_entry_void();
+ if (!ocfs2_is_hard_readonly(osb) && !ocfs2_mount_local(osb))
+ ocfs2_cluster_unlock(osb, lockres, level);
+ mlog_exit_void();
+}
+
+static int ocfs2_refresh_qinfo(struct ocfs2_mem_dqinfo *oinfo)
+{
+ struct mem_dqinfo *info = sb_dqinfo(oinfo->dqi_gi.dqi_sb,
+ oinfo->dqi_gi.dqi_type);
+ struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock;
+ struct ocfs2_qinfo_lvb *lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
+ struct buffer_head *bh = NULL;
+ struct ocfs2_global_disk_dqinfo *gdinfo;
+ int status = 0;
+
+ if (lvb->lvb_version == OCFS2_QINFO_LVB_VERSION) {
+ info->dqi_bgrace = be32_to_cpu(lvb->lvb_bgrace);
+ info->dqi_igrace = be32_to_cpu(lvb->lvb_igrace);
+ oinfo->dqi_syncms = be32_to_cpu(lvb->lvb_syncms);
+ oinfo->dqi_gi.dqi_blocks = be32_to_cpu(lvb->lvb_blocks);
+ oinfo->dqi_gi.dqi_free_blk = be32_to_cpu(lvb->lvb_free_blk);
+ oinfo->dqi_gi.dqi_free_entry =
+ be32_to_cpu(lvb->lvb_free_entry);
+ } else {
+ status = ocfs2_read_quota_block(oinfo->dqi_gqinode, 0, &bh);
+ if (status) {
+ mlog_errno(status);
+ goto bail;
+ }
+ gdinfo = (struct ocfs2_global_disk_dqinfo *)
+ (bh->b_data + OCFS2_GLOBAL_INFO_OFF);
+ info->dqi_bgrace = le32_to_cpu(gdinfo->dqi_bgrace);
+ info->dqi_igrace = le32_to_cpu(gdinfo->dqi_igrace);
+ oinfo->dqi_syncms = le32_to_cpu(gdinfo->dqi_syncms);
+ oinfo->dqi_gi.dqi_blocks = le32_to_cpu(gdinfo->dqi_blocks);
+ oinfo->dqi_gi.dqi_free_blk = le32_to_cpu(gdinfo->dqi_free_blk);
+ oinfo->dqi_gi.dqi_free_entry =
+ le32_to_cpu(gdinfo->dqi_free_entry);
+ brelse(bh);
+ ocfs2_track_lock_refresh(lockres);
+ }
+
+bail:
+ return status;
+}
+
+/* Lock quota info, this function expects at least shared lock on the quota file
+ * so that we can safely refresh quota info from disk. */
+int ocfs2_qinfo_lock(struct ocfs2_mem_dqinfo *oinfo, int ex)
+{
+ struct ocfs2_lock_res *lockres = &oinfo->dqi_gqlock;
+ struct ocfs2_super *osb = OCFS2_SB(oinfo->dqi_gi.dqi_sb);
+ int level = ex ? DLM_LOCK_EX : DLM_LOCK_PR;
+ int status = 0;
+
+ mlog_entry_void();
+
+ /* On RO devices, locking really isn't needed... */
+ if (ocfs2_is_hard_readonly(osb)) {
+ if (ex)
+ status = -EROFS;
+ goto bail;
+ }
+ if (ocfs2_mount_local(osb))
+ goto bail;
+
+ status = ocfs2_cluster_lock(osb, lockres, level, 0, 0);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail;
+ }
+ if (!ocfs2_should_refresh_lock_res(lockres))
+ goto bail;
+ /* OK, we have the lock but we need to refresh the quota info */
+ status = ocfs2_refresh_qinfo(oinfo);
+ if (status)
+ ocfs2_qinfo_unlock(oinfo, ex);
+ ocfs2_complete_lock_res_refresh(lockres, status);
+bail:
+ mlog_exit(status);
+ return status;
+}
+
/*
* This is the filesystem locking protocol. It provides the lock handling
* hooks for the underlying DLM. It has a maximum version number.
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