[PATCH 34/35] ocfs2: alloc xattr bucket in ocfs2_xattr_set_handle

From: Mark Fasheh
Date: Thu Dec 25 2008 - 13:17:10 EST


From: Tiger Yang <tiger.yang@xxxxxxxxxx>

In extreme situation, may need xattr bucket for setting
security entry and acl entries during mknod. This only
happens when block size is too small.

Signed-off-by: Tiger Yang <tiger.yang@xxxxxxxxxx>
Signed-off-by: Mark Fasheh <mfasheh@xxxxxxxx>
---
fs/ocfs2/xattr.c | 18 +++++++++++++++---
1 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index e5be470..095b0bb 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -2611,9 +2611,7 @@ out:
/*
* This function only called duing creating inode
* for init security/acl xattrs of the new inode.
- * The xattrs could be put into ibody or extent block,
- * xattr bucket would not be use in this case.
- * transanction credits also be reserved in here.
+ * All transanction credits have been reserved in mknod.
*/
int ocfs2_xattr_set_handle(handle_t *handle,
struct inode *inode,
@@ -2653,6 +2651,19 @@ int ocfs2_xattr_set_handle(handle_t *handle,
if (!ocfs2_supports_xattr(OCFS2_SB(inode->i_sb)))
return -EOPNOTSUPP;

+ /*
+ * In extreme situation, may need xattr bucket when
+ * block size is too small. And we have already reserved
+ * the credits for bucket in mknod.
+ */
+ if (inode->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE) {
+ xbs.bucket = ocfs2_xattr_bucket_new(inode);
+ if (!xbs.bucket) {
+ mlog_errno(-ENOMEM);
+ return -ENOMEM;
+ }
+ }
+
xis.inode_bh = xbs.inode_bh = di_bh;
di = (struct ocfs2_dinode *)di_bh->b_data;

@@ -2672,6 +2683,7 @@ int ocfs2_xattr_set_handle(handle_t *handle,
cleanup:
up_write(&OCFS2_I(inode)->ip_xattr_sem);
brelse(xbs.xattr_bh);
+ ocfs2_xattr_bucket_free(xbs.bucket);

return ret;
}
--
1.5.6

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