Subject: + ocfs2-free-inode-when-i_count-becomes-zero.patch added to -mm tree
To: xuejiufei@xxxxxxxxxx,jlbec@xxxxxxxxxxxx,mfasheh@xxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 11 Jun 2014 15:23:38 -0700
The patch titled
Subject: ocfs2: free inode when i_count becomes zero
has been added to the -mm tree. Its filename is
ocfs2-free-inode-when-i_count-becomes-zero.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-free-inode-when-i_count-becomes-zero.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-free-inode-when-i_count-becomes-zero.patch
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From: Xue jiufei <xuejiufei@xxxxxxxxxx>
Subject: ocfs2: free inode when i_count becomes zero
Disk inode deletion may be heavily delayed when one node unlink a file
after the same dentry is freed on another node(say N1) because of memory
shrink but inode is left in memory. This inode can only be freed while N1
doing the orphan scan work.
However, N1 may skip orphan scan for several times because other nodes may
do the work earlier. In our tests, it may take 1 hour on 4 nodes cluster
and this will cause bad user experience. So we think the inode should be
freed when i_count becomes zero to avoid such circumstances.
Signed-off-by: joyce.xue <xuejiufei@xxxxxxxxxx>
Cc: Mark Fasheh <mfasheh@xxxxxxxx>
Cc: Joel Becker <jlbec@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ocfs2/inode.c | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff -puN fs/ocfs2/inode.c~ocfs2-free-inode-when-i_count-becomes-zero fs/ocfs2/inode.c
--- a/fs/ocfs2/inode.c~ocfs2-free-inode-when-i_count-becomes-zero
+++ a/fs/ocfs2/inode.c
@@ -1192,17 +1192,9 @@ void ocfs2_evict_inode(struct inode *ino
int ocfs2_drop_inode(struct inode *inode)
{
struct ocfs2_inode_info *oi = OCFS2_I(inode);
- int res;
-
trace_ocfs2_drop_inode((unsigned long long)oi->ip_blkno,
inode->i_nlink, oi->ip_flags);
-
- if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)
- res = 1;
- else
- res = generic_drop_inode(inode);
-
- return res;
+ return 1;
}
/*
_
Patches currently in -mm which might be from xuejiufei@xxxxxxxxxx are
origin.patch
ocfs2-free-inode-when-i_count-becomes-zero.patch
ocfs2-revert-the-patch-fix-null-pointer-dereference-when-dismount-and-ocfs2rec-simultaneously.patch
ocfs2-dlm-do-not-purge-lockres-that-is-queued-for-assert-master.patch
ocfs2-do-not-return-dlm_migrate_response_mastery_ref-to-avoid-endlessloop-during-umount.patch
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