[Ocfs2-devel] [PATCH 37/42] ocfs2: Call refcount tree remove process properly.
Tao Ma
tao.ma at oracle.com
Thu Apr 2 16:46:16 PDT 2009
Now with xattr refcount support, we need to check whether
we have xattr refcounted before we remove the refcount tree.
Now the mechanism is:
1) Check whether i_clusters == 0, if no, exit.
2) check whether we have i_xattr_loc in dinode. if yes, exit.
2) Check whether we have inline xattr stored outside, if yes, exit.
4) Remove the tree.
Signed-off-by: Tao Ma <tao.ma at oracle.com>
---
fs/ocfs2/alloc.c | 5 -----
fs/ocfs2/file.c | 3 +++
fs/ocfs2/inode.c | 7 +++++++
fs/ocfs2/refcounttree.c | 36 ++++++++++++++++++++++++++++++++++++
fs/ocfs2/refcounttree.h | 2 ++
fs/ocfs2/xattr.c | 23 +++++++++++++++++++++++
fs/ocfs2/xattr.h | 2 ++
7 files changed, 73 insertions(+), 5 deletions(-)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index d2a058a..ef51d02 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -7650,11 +7650,6 @@ bail:
if (ref_tree)
ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
- if (!status && OCFS2_I(inode)->ip_clusters == 0) {
- /* remove the refcount tree. */
- status = ocfs2_remove_refcount_tree(inode, fe_bh);
- }
-
ocfs2_schedule_truncate_log_flush(osb, 1);
if (meta_ac)
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 796be27..c36daa7 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -59,6 +59,7 @@
#include "xattr.h"
#include "acl.h"
#include "quota.h"
+#include "refcounttree.h"
#include "buffer_head_io.h"
@@ -483,6 +484,8 @@ bail_unlock_sem:
up_write(&OCFS2_I(inode)->ip_alloc_sem);
bail:
+ if (!status && OCFS2_I(inode)->ip_clusters == 0)
+ status = ocfs2_try_remove_refcount_tree(inode, di_bh);
mlog_exit(status);
return status;
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 748fd5a..1e3c006 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -52,6 +52,7 @@
#include "sysfile.h"
#include "uptodate.h"
#include "xattr.h"
+#include "refcounttree.h"
#include "buffer_head_io.h"
@@ -748,6 +749,12 @@ static int ocfs2_wipe_inode(struct inode *inode,
goto bail_unlock_dir;
}
+ status = ocfs2_remove_refcount_tree(inode, di_bh);
+ if (status < 0) {
+ mlog_errno(status);
+ goto bail_unlock_dir;
+ }
+
status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode,
orphan_dir_bh);
if (status < 0)
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index d680edb..c12fcb0 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -427,6 +427,42 @@ out:
}
/*
+ * Try to remove refcount tree. The mechanism is:
+ * 1) Check whether i_clusters == 0, if no, exit.
+ * 2) check whether we have i_xattr_loc in dinode. if yes, exit.
+ * 3) Check whether we have inline xattr stored outside, if yes, exit.
+ * 4) Remove the tree.
+ */
+int ocfs2_try_remove_refcount_tree(struct inode *inode,
+ struct buffer_head *di_bh)
+{
+ int ret;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+
+ down_write(&oi->ip_xattr_sem);
+ down_write(&oi->ip_alloc_sem);
+
+ if (oi->ip_clusters)
+ goto out;
+
+ if ((oi->ip_dyn_features & OCFS2_HAS_XATTR_FL) && di->i_xattr_loc)
+ goto out;
+
+ if (oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL &&
+ ocfs2_has_inline_xattr_value_outside(inode, di))
+ goto out;
+
+ ret = ocfs2_remove_refcount_tree(inode, di_bh);
+ if (ret)
+ mlog_errno(ret);
+out:
+ up_write(&oi->ip_alloc_sem);
+ up_write(&oi->ip_xattr_sem);
+ return 0;
+}
+
+/*
* Given a cpos and len, try to find the refcount record which contains cpos.
* 1. If cpos can be found in one refcount record, return the record.
* 2. If cpos can't be found, return a fake record which start from cpos
diff --git a/fs/ocfs2/refcounttree.h b/fs/ocfs2/refcounttree.h
index 0ad42c0..8939e00 100644
--- a/fs/ocfs2/refcounttree.h
+++ b/fs/ocfs2/refcounttree.h
@@ -47,6 +47,8 @@ int ocfs2_set_refcount_tree(struct inode *inode,
struct buffer_head *di_bh,
u64 blkno);
int ocfs2_remove_refcount_tree(struct inode *inode, struct buffer_head *di_bh);
+int ocfs2_try_remove_refcount_tree(struct inode *inode,
+ struct buffer_head *di_bh);
int ocfs2_decrease_refcount(struct inode *inode,
handle_t *handle, u32 cpos, u32 len,
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index b606604..d3fd0de 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -835,6 +835,23 @@ static int ocfs2_xattr_list_entries(struct inode *inode,
return result;
}
+int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
+ struct ocfs2_dinode *di)
+{
+ struct ocfs2_xattr_header *xh;
+ int i;
+
+ xh = (struct ocfs2_xattr_header *)
+ ((void *)di + inode->i_sb->s_blocksize -
+ le16_to_cpu(di->i_xattr_inline_size));
+
+ for (i = 0; i < le16_to_cpu(xh->xh_count); i++)
+ if (!ocfs2_xattr_is_local(&xh->xh_entries[i]))
+ return 1;
+
+ return 0;
+}
+
static int ocfs2_xattr_ibody_list(struct inode *inode,
struct ocfs2_dinode *di,
char *buffer,
@@ -2892,10 +2909,16 @@ int ocfs2_xattr_set(struct inode *inode,
if (ocfs2_dealloc_has_cluster(&ctxt.dealloc))
ocfs2_schedule_truncate_log_flush(osb, 1);
ocfs2_run_deallocs(osb, &ctxt.dealloc);
+
cleanup:
if (ref_tree)
ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
up_write(&OCFS2_I(inode)->ip_xattr_sem);
+ if (!value && !ret) {
+ ret = ocfs2_try_remove_refcount_tree(inode, di_bh);
+ if (ret)
+ mlog_errno(ret);
+ }
ocfs2_inode_unlock(inode, 1);
cleanup_nolock:
brelse(di_bh);
diff --git a/fs/ocfs2/xattr.h b/fs/ocfs2/xattr.h
index 22a7cee..e5e67e6 100644
--- a/fs/ocfs2/xattr.h
+++ b/fs/ocfs2/xattr.h
@@ -55,6 +55,8 @@ int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
int, const char *, const void *, size_t, int,
struct ocfs2_alloc_context *,
struct ocfs2_alloc_context *);
+int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
+ struct ocfs2_dinode *di);
int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
int ocfs2_init_security_get(struct inode *, struct inode *,
struct ocfs2_security_xattr_info *);
--
1.6.2.rc2.16.gf474c
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