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ocfs2: do not include dio entry in case of orphan scan

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dio entry will only do truncate in case of ORPHAN_NEED_TRUNCATE. So do
not include it when doing normal orphan scan to reduce contention.

Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joseph Qi 2015-11-05 18:44:01 -08:00 committed by Linus Torvalds
parent 1d1aff8cf3
commit 30edc43c7f
3 changed files with 15 additions and 5 deletions
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15
fs/ocfs2/journal.c
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@ -2021,6 +2021,7 @@ struct ocfs2_orphan_filldir_priv {
struct dir_context ctx;
struct inode *head;
struct ocfs2_super *osb;
enum ocfs2_orphan_reco_type orphan_reco_type;
};
static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name,
@ -2036,6 +2037,12 @@ static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name,
if (name_len == 2 && !strncmp("..", name, 2))
return 0;
/* do not include dio entry in case of orphan scan */
if ((p->orphan_reco_type == ORPHAN_NO_NEED_TRUNCATE) &&
(!strncmp(name, OCFS2_DIO_ORPHAN_PREFIX,
OCFS2_DIO_ORPHAN_PREFIX_LEN)))
return 0;
/* Skip bad inodes so that recovery can continue */
iter = ocfs2_iget(p->osb, ino,
OCFS2_FI_FLAG_ORPHAN_RECOVERY, 0);
@ -2060,14 +2067,16 @@ static int ocfs2_orphan_filldir(struct dir_context *ctx, const char *name,
static int ocfs2_queue_orphans(struct ocfs2_super *osb,
int slot,
struct inode **head)
struct inode **head,
enum ocfs2_orphan_reco_type orphan_reco_type)
{
int status;
struct inode *orphan_dir_inode = NULL;
struct ocfs2_orphan_filldir_priv priv = {
.ctx.actor = ocfs2_orphan_filldir,
.osb = osb,
.head = *head
.head = *head,
.orphan_reco_type = orphan_reco_type
};
orphan_dir_inode = ocfs2_get_system_file_inode(osb,
@ -2170,7 +2179,7 @@ static int ocfs2_recover_orphans(struct ocfs2_super *osb,
trace_ocfs2_recover_orphans(slot);
ocfs2_mark_recovering_orphan_dir(osb, slot);
ret = ocfs2_queue_orphans(osb, slot, &inode);
ret = ocfs2_queue_orphans(osb, slot, &inode, orphan_reco_type);
ocfs2_clear_recovering_orphan_dir(osb, slot);
/* Error here should be noted, but we want to continue with as

2
fs/ocfs2/namei.c
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@ -106,8 +106,6 @@ static int ocfs2_double_lock(struct ocfs2_super *osb,
static void ocfs2_double_unlock(struct inode *inode1, struct inode *inode2);
/* An orphan dir name is an 8 byte value, printed as a hex string */
#define OCFS2_ORPHAN_NAMELEN ((int)(2 * sizeof(u64)))
#define OCFS2_DIO_ORPHAN_PREFIX "dio-"
#define OCFS2_DIO_ORPHAN_PREFIX_LEN 4
static struct dentry *ocfs2_lookup(struct inode *dir, struct dentry *dentry,
unsigned int flags)

3
fs/ocfs2/namei.h
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@ -26,6 +26,9 @@
#ifndef OCFS2_NAMEI_H
#define OCFS2_NAMEI_H
#define OCFS2_DIO_ORPHAN_PREFIX "dio-"
#define OCFS2_DIO_ORPHAN_PREFIX_LEN 4
extern const struct inode_operations ocfs2_dir_iops;
struct dentry *ocfs2_get_parent(struct dentry *child);