From: Jeff Liu <jeff.liu@oracle.com>
To: xfs@oss.sgi.com
Subject: [PATCH 02/15] xfs: Introduce new structure members ag_state/agf_state
Date: Fri, 16 Nov 2012 14:45:06 +0800 [thread overview]
Message-ID: <50A5E0F2.5030209@oracle.com> (raw)
Introduce new members ag_state && agf_state to struct
xfs_perag and struct xfs_agf separately.
It would be used for two purpose for now:
- get/set state upon a given AG with coming new ioctl(2).
- check whether a given a.g. can be selected for block/inode allocation or not.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
---
fs/xfs/xfs_ag.h | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 44d65c1..fd578e6 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -69,6 +69,10 @@ typedef struct xfs_agf {
__be32 agf_freeblks; /* total free blocks */
__be32 agf_longest; /* longest free space */
__be32 agf_btreeblks; /* # of blocks held in AGF btrees */
+ /*
+ * A.G state for freespace allocation(allow/deny)
+ */
+ __be32 agf_state; /* persistent a.g. state */
} xfs_agf_t;
#define XFS_AGF_MAGICNUM 0x00000001
@@ -83,7 +87,8 @@ typedef struct xfs_agf {
#define XFS_AGF_FREEBLKS 0x00000200
#define XFS_AGF_LONGEST 0x00000400
#define XFS_AGF_BTREEBLKS 0x00000800
-#define XFS_AGF_NUM_BITS 12
+#define XFS_AGF_STATE 0x00001000
+#define XFS_AGF_NUM_BITS 13
#define XFS_AGF_ALL_BITS ((1 << XFS_AGF_NUM_BITS) - 1)
#define XFS_AGF_FLAGS \
@@ -98,7 +103,8 @@ typedef struct xfs_agf {
{ XFS_AGF_FLCOUNT, "FLCOUNT" }, \
{ XFS_AGF_FREEBLKS, "FREEBLKS" }, \
{ XFS_AGF_LONGEST, "LONGEST" }, \
- { XFS_AGF_BTREEBLKS, "BTREEBLKS" }
+ { XFS_AGF_BTREEBLKS, "BTREEBLKS" }, \
+ { XFS_AGF_STATE, "STATE" }
/* disk block (xfs_daddr_t) in the AG */
#define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log))
@@ -159,7 +165,7 @@ typedef struct xfs_agi {
#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)((bp)->b_addr))
extern int xfs_read_agi(struct xfs_mount *mp, struct xfs_trans *tp,
- xfs_agnumber_t agno, struct xfs_buf **bpp);
+ xfs_agnumber_t agno, struct xfs_buf **bpp);
/*
* The third a.g. block contains the a.g. freelist, an array
@@ -225,6 +231,7 @@ typedef struct xfs_perag {
struct rcu_head rcu_head;
#endif
int pagb_count; /* pagb slots in use */
+ __uint32_t pag_state; /* persistent a.g. state */
} xfs_perag_t;
/*
--
1.7.4.1
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
reply other threads:[~2012-11-16 6:43 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50A5E0F2.5030209@oracle.com \
--to=jeff.liu@oracle.com \
--cc=xfs@oss.sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox