* [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues
2012-02-21 0:38 [PATCH 0/8] log all inode updates V2 Christoph Hellwig
@ 2012-02-21 0:38 ` Christoph Hellwig
2012-02-21 4:58 ` Dave Chinner
2012-02-28 16:13 ` Mark Tinguely
2012-02-21 0:38 ` [PATCH 2/8] xfs: do not require an ioend for new EOF calculation Christoph Hellwig
` (3 subsequent siblings)
4 siblings, 2 replies; 14+ messages in thread
From: Christoph Hellwig @ 2012-02-21 0:38 UTC (permalink / raw)
To: xfs
[-- Attachment #1: xfs-split-workqueues --]
[-- Type: text/plain, Size: 7435 bytes --]
The new concurrency managed workqueues are cheap enough that we can create
per-filesystem instead of global workqueues. This allows us to remove the
trylock or defer scheme on the ilock, which is not helpful once we have
outstanding log reservations until finishing a size update.
Also allow the default concurrency on this workqueues so that I/O completions
blocking on the ilock for one inode do not block process for another inode.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_aops.c | 39 ++++++++++-----------------------------
fs/xfs/xfs_aops.h | 2 --
fs/xfs/xfs_buf.c | 17 -----------------
fs/xfs/xfs_mount.h | 3 +++
fs/xfs/xfs_super.c | 39 ++++++++++++++++++++++++++++++++++++++-
5 files changed, 51 insertions(+), 49 deletions(-)
Index: xfs/fs/xfs/xfs_aops.c
===================================================================
--- xfs.orig/fs/xfs/xfs_aops.c 2012-02-13 15:59:57.997159607 -0800
+++ xfs/fs/xfs/xfs_aops.c 2012-02-19 13:21:45.653291774 -0800
@@ -126,21 +126,15 @@ static inline bool xfs_ioend_is_append(s
/*
* Update on-disk file size now that data has been written to disk.
- *
- * This function does not block as blocking on the inode lock in IO completion
- * can lead to IO completion order dependency deadlocks.. If it can't get the
- * inode ilock it will return EAGAIN. Callers must handle this.
*/
-STATIC int
+STATIC void
xfs_setfilesize(
- xfs_ioend_t *ioend)
+ struct xfs_ioend *ioend)
{
- xfs_inode_t *ip = XFS_I(ioend->io_inode);
+ struct xfs_inode *ip = XFS_I(ioend->io_inode);
xfs_fsize_t isize;
- if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL))
- return EAGAIN;
-
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
isize = xfs_ioend_new_eof(ioend);
if (isize) {
trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size);
@@ -149,7 +143,6 @@ xfs_setfilesize(
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
- return 0;
}
/*
@@ -163,10 +156,12 @@ xfs_finish_ioend(
struct xfs_ioend *ioend)
{
if (atomic_dec_and_test(&ioend->io_remaining)) {
+ struct xfs_mount *mp = XFS_I(ioend->io_inode)->i_mount;
+
if (ioend->io_type == IO_UNWRITTEN)
- queue_work(xfsconvertd_workqueue, &ioend->io_work);
+ queue_work(mp->m_unwritten_workqueue, &ioend->io_work);
else if (xfs_ioend_is_append(ioend))
- queue_work(xfsdatad_workqueue, &ioend->io_work);
+ queue_work(mp->m_data_workqueue, &ioend->io_work);
else
xfs_destroy_ioend(ioend);
}
@@ -207,23 +202,9 @@ xfs_end_io(
* We might have to update the on-disk file size after extending
* writes.
*/
- error = xfs_setfilesize(ioend);
- ASSERT(!error || error == EAGAIN);
-
+ xfs_setfilesize(ioend);
done:
- /*
- * If we didn't complete processing of the ioend, requeue it to the
- * tail of the workqueue for another attempt later. Otherwise destroy
- * it.
- */
- if (error == EAGAIN) {
- atomic_inc(&ioend->io_remaining);
- xfs_finish_ioend(ioend);
- /* ensure we don't spin on blocked ioends */
- delay(1);
- } else {
- xfs_destroy_ioend(ioend);
- }
+ xfs_destroy_ioend(ioend);
}
/*
Index: xfs/fs/xfs/xfs_aops.h
===================================================================
--- xfs.orig/fs/xfs/xfs_aops.h 2012-02-13 13:48:02.390346163 -0800
+++ xfs/fs/xfs/xfs_aops.h 2012-02-19 13:21:45.653291774 -0800
@@ -18,8 +18,6 @@
#ifndef __XFS_AOPS_H__
#define __XFS_AOPS_H__
-extern struct workqueue_struct *xfsdatad_workqueue;
-extern struct workqueue_struct *xfsconvertd_workqueue;
extern mempool_t *xfs_ioend_pool;
/*
Index: xfs/fs/xfs/xfs_buf.c
===================================================================
--- xfs.orig/fs/xfs/xfs_buf.c 2012-02-13 13:48:02.393679497 -0800
+++ xfs/fs/xfs/xfs_buf.c 2012-02-19 13:21:45.653291774 -0800
@@ -45,8 +45,6 @@ static kmem_zone_t *xfs_buf_zone;
STATIC int xfsbufd(void *);
static struct workqueue_struct *xfslogd_workqueue;
-struct workqueue_struct *xfsdatad_workqueue;
-struct workqueue_struct *xfsconvertd_workqueue;
#ifdef XFS_BUF_LOCK_TRACKING
# define XB_SET_OWNER(bp) ((bp)->b_last_holder = current->pid)
@@ -1793,21 +1791,8 @@ xfs_buf_init(void)
if (!xfslogd_workqueue)
goto out_free_buf_zone;
- xfsdatad_workqueue = alloc_workqueue("xfsdatad", WQ_MEM_RECLAIM, 1);
- if (!xfsdatad_workqueue)
- goto out_destroy_xfslogd_workqueue;
-
- xfsconvertd_workqueue = alloc_workqueue("xfsconvertd",
- WQ_MEM_RECLAIM, 1);
- if (!xfsconvertd_workqueue)
- goto out_destroy_xfsdatad_workqueue;
-
return 0;
- out_destroy_xfsdatad_workqueue:
- destroy_workqueue(xfsdatad_workqueue);
- out_destroy_xfslogd_workqueue:
- destroy_workqueue(xfslogd_workqueue);
out_free_buf_zone:
kmem_zone_destroy(xfs_buf_zone);
out:
@@ -1817,8 +1802,6 @@ xfs_buf_init(void)
void
xfs_buf_terminate(void)
{
- destroy_workqueue(xfsconvertd_workqueue);
- destroy_workqueue(xfsdatad_workqueue);
destroy_workqueue(xfslogd_workqueue);
kmem_zone_destroy(xfs_buf_zone);
}
Index: xfs/fs/xfs/xfs_super.c
===================================================================
--- xfs.orig/fs/xfs/xfs_super.c 2012-02-19 12:58:45.823295509 -0800
+++ xfs/fs/xfs/xfs_super.c 2012-02-19 13:23:48.836624774 -0800
@@ -759,6 +759,36 @@ xfs_setup_devices(
return 0;
}
+STATIC int
+xfs_init_mount_workqueues(
+ struct xfs_mount *mp)
+{
+ mp->m_data_workqueue = alloc_workqueue("xfs-data/%s",
+ WQ_MEM_RECLAIM, 0, mp->m_fsname);
+ if (!mp->m_data_workqueue)
+ goto out;
+
+ mp->m_unwritten_workqueue = alloc_workqueue("xfs-conv/%s",
+ WQ_MEM_RECLAIM, 0, mp->m_fsname);
+ if (!mp->m_unwritten_workqueue)
+ goto out_destroy_data_iodone_queue;
+
+ return 0;
+
+out_destroy_data_iodone_queue:
+ destroy_workqueue(mp->m_data_workqueue);
+out:
+ return -ENOMEM;
+}
+
+STATIC void
+xfs_destroy_mount_workqueues(
+ struct xfs_mount *mp)
+{
+ destroy_workqueue(mp->m_data_workqueue);
+ destroy_workqueue(mp->m_unwritten_workqueue);
+}
+
/* Catch misguided souls that try to use this interface on XFS */
STATIC struct inode *
xfs_fs_alloc_inode(
@@ -982,6 +1012,7 @@ xfs_fs_put_super(
xfs_unmountfs(mp);
xfs_freesb(mp);
xfs_icsb_destroy_counters(mp);
+ xfs_destroy_mount_workqueues(mp);
xfs_close_devices(mp);
xfs_free_fsname(mp);
kfree(mp);
@@ -1308,10 +1339,14 @@ xfs_fs_fill_super(
if (error)
goto out_free_fsname;
- error = xfs_icsb_init_counters(mp);
+ error = xfs_init_mount_workqueues(mp);
if (error)
goto out_close_devices;
+ error = xfs_icsb_init_counters(mp);
+ if (error)
+ goto out_destroy_workqueues;
+
error = xfs_readsb(mp, flags);
if (error)
goto out_destroy_counters;
@@ -1374,6 +1409,8 @@ xfs_fs_fill_super(
xfs_freesb(mp);
out_destroy_counters:
xfs_icsb_destroy_counters(mp);
+out_destroy_workqueues:
+ xfs_destroy_mount_workqueues(mp);
out_close_devices:
xfs_close_devices(mp);
out_free_fsname:
Index: xfs/fs/xfs/xfs_mount.h
===================================================================
--- xfs.orig/fs/xfs/xfs_mount.h 2012-02-13 13:48:02.410346163 -0800
+++ xfs/fs/xfs/xfs_mount.h 2012-02-19 13:21:45.656625108 -0800
@@ -211,6 +211,9 @@ typedef struct xfs_mount {
struct shrinker m_inode_shrink; /* inode reclaim shrinker */
int64_t m_low_space[XFS_LOWSP_MAX];
/* low free space thresholds */
+
+ struct workqueue_struct *m_data_workqueue;
+ struct workqueue_struct *m_unwritten_workqueue;
} xfs_mount_t;
/*
_______________________________________________
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xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues
2012-02-21 0:38 ` [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues Christoph Hellwig
@ 2012-02-21 4:58 ` Dave Chinner
2012-02-28 16:13 ` Mark Tinguely
1 sibling, 0 replies; 14+ messages in thread
From: Dave Chinner @ 2012-02-21 4:58 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: xfs
On Mon, Feb 20, 2012 at 07:38:25PM -0500, Christoph Hellwig wrote:
> The new concurrency managed workqueues are cheap enough that we can create
> per-filesystem instead of global workqueues. This allows us to remove the
> trylock or defer scheme on the ilock, which is not helpful once we have
> outstanding log reservations until finishing a size update.
>
> Also allow the default concurrency on this workqueues so that I/O completions
> blocking on the ilock for one inode do not block process for another inode.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks good.
Reviewed-by: Dave Chinner <dchinner@redhat.com>
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues
2012-02-21 0:38 ` [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues Christoph Hellwig
2012-02-21 4:58 ` Dave Chinner
@ 2012-02-28 16:13 ` Mark Tinguely
1 sibling, 0 replies; 14+ messages in thread
From: Mark Tinguely @ 2012-02-28 16:13 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: xfs
On 02/20/12 18:38, Christoph Hellwig wrote:
> The new concurrency managed workqueues are cheap enough that we can create
> per-filesystem instead of global workqueues. This allows us to remove the
> trylock or defer scheme on the ilock, which is not helpful once we have
> outstanding log reservations until finishing a size update.
>
> Also allow the default concurrency on this workqueues so that I/O completions
> blocking on the ilock for one inode do not block process for another inode.
>
> Signed-off-by: Christoph Hellwig<hch@lst.de>
Looks good.
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 2/8] xfs: do not require an ioend for new EOF calculation
2012-02-21 0:38 [PATCH 0/8] log all inode updates V2 Christoph Hellwig
2012-02-21 0:38 ` [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues Christoph Hellwig
@ 2012-02-21 0:38 ` Christoph Hellwig
2012-02-28 16:14 ` Mark Tinguely
2012-02-21 0:38 ` [PATCH 6/8] xfs: make xfs_inode_item_size idempotent Christoph Hellwig
` (2 subsequent siblings)
4 siblings, 1 reply; 14+ messages in thread
From: Christoph Hellwig @ 2012-02-21 0:38 UTC (permalink / raw)
To: xfs
[-- Attachment #1: xfs-simplify-eof-calculation --]
[-- Type: text/plain, Size: 3123 bytes --]
Replace xfs_ioend_new_eof with a new inline xfs_new_eof helper that
doesn't require and ioend, and is available also outside of xfs_aops.c.
Also make the code a bit more clear by using a normal if statement
instead of a slightly misleading MIN().
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_aops.c | 24 ++++--------------------
fs/xfs/xfs_inode.h | 14 ++++++++++++++
2 files changed, 18 insertions(+), 20 deletions(-)
Index: xfs/fs/xfs/xfs_aops.c
===================================================================
--- xfs.orig/fs/xfs/xfs_aops.c 2011-11-30 11:05:19.260046232 +0100
+++ xfs/fs/xfs/xfs_aops.c 2011-11-30 11:06:07.983115611 +0100
@@ -99,23 +99,6 @@ xfs_destroy_ioend(
}
/*
- * If the end of the current ioend is beyond the current EOF,
- * return the new EOF value, otherwise zero.
- */
-STATIC xfs_fsize_t
-xfs_ioend_new_eof(
- xfs_ioend_t *ioend)
-{
- xfs_inode_t *ip = XFS_I(ioend->io_inode);
- xfs_fsize_t isize;
- xfs_fsize_t bsize;
-
- bsize = ioend->io_offset + ioend->io_size;
- isize = MIN(i_size_read(VFS_I(ip)), bsize);
- return isize > ip->i_d.di_size ? isize : 0;
-}
-
-/*
* Fast and loose check if this write could update the on-disk inode size.
*/
static inline bool xfs_ioend_is_append(struct xfs_ioend *ioend)
@@ -135,7 +118,7 @@ xfs_setfilesize(
xfs_fsize_t isize;
xfs_ilock(ip, XFS_ILOCK_EXCL);
- isize = xfs_ioend_new_eof(ioend);
+ isize = xfs_new_eof(ip, ioend->io_offset + ioend->io_size);
if (isize) {
trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size);
ip->i_d.di_size = isize;
@@ -357,6 +340,7 @@ xfs_submit_ioend_bio(
xfs_ioend_t *ioend,
struct bio *bio)
{
+ struct xfs_inode *ip = XFS_I(ioend->io_inode);
atomic_inc(&ioend->io_remaining);
bio->bi_private = ioend;
bio->bi_end_io = xfs_end_bio;
@@ -365,8 +349,8 @@ xfs_submit_ioend_bio(
* If the I/O is beyond EOF we mark the inode dirty immediately
* but don't update the inode size until I/O completion.
*/
- if (xfs_ioend_new_eof(ioend))
- xfs_mark_inode_dirty(XFS_I(ioend->io_inode));
+ if (xfs_new_eof(ip, ioend->io_offset + ioend->io_size))
+ xfs_mark_inode_dirty(ip);
submit_bio(wbc->sync_mode == WB_SYNC_ALL ? WRITE_SYNC : WRITE, bio);
}
Index: xfs/fs/xfs/xfs_inode.h
===================================================================
--- xfs.orig/fs/xfs/xfs_inode.h 2011-11-30 11:05:16.670060264 +0100
+++ xfs/fs/xfs/xfs_inode.h 2011-11-30 11:06:03.769805103 +0100
@@ -275,6 +275,20 @@ static inline xfs_fsize_t XFS_ISIZE(stru
}
/*
+ * If this I/O goes past the on-disk inode size update it unless it would
+ * be past the current in-core inode size.
+ */
+static inline xfs_fsize_t
+xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size)
+{
+ xfs_fsize_t i_size = i_size_read(VFS_I(ip));
+
+ if (new_size > i_size)
+ new_size = i_size;
+ return new_size > ip->i_d.di_size ? new_size : 0;
+}
+
+/*
* i_flags helper functions
*/
static inline void
_______________________________________________
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http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread* [PATCH 6/8] xfs: make xfs_inode_item_size idempotent
2012-02-21 0:38 [PATCH 0/8] log all inode updates V2 Christoph Hellwig
2012-02-21 0:38 ` [PATCH 1/8] xfs: use per-filesystem I/O completion workqueues Christoph Hellwig
2012-02-21 0:38 ` [PATCH 2/8] xfs: do not require an ioend for new EOF calculation Christoph Hellwig
@ 2012-02-21 0:38 ` Christoph Hellwig
2012-02-21 5:14 ` Dave Chinner
2012-02-21 0:38 ` [PATCH 7/8] xfs: split in-core and on-disk inode log item fields Christoph Hellwig
2012-02-21 0:38 ` [PATCH 8/8] xfs: add back fdatasync support Christoph Hellwig
4 siblings, 1 reply; 14+ messages in thread
From: Christoph Hellwig @ 2012-02-21 0:38 UTC (permalink / raw)
To: xfs
[-- Attachment #1: xfs-idempotent-inode_item_size --]
[-- Type: text/plain, Size: 11477 bytes --]
Move all code messing with the inode log item flags into xfs_inode_item_format
to make sure xfs_inode_item_size really only calculates the the number of
vectors, but doesn't modify any state of the inode item.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_inode_item.c | 214 ++++++++++++++++++------------------------------
1 file changed, 83 insertions(+), 131 deletions(-)
Index: xfs/fs/xfs/xfs_inode_item.c
===================================================================
--- xfs.orig/fs/xfs/xfs_inode_item.c 2012-02-20 12:08:36.976655590 -0800
+++ xfs/fs/xfs/xfs_inode_item.c 2012-02-20 12:08:39.456655583 -0800
@@ -57,77 +57,28 @@ xfs_inode_item_size(
struct xfs_inode *ip = iip->ili_inode;
uint nvecs = 2;
- /*
- * Only log the data/extents/b-tree root if there is something
- * left to log.
- */
- iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
-
switch (ip->i_d.di_format) {
case XFS_DINODE_FMT_EXTENTS:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
- XFS_ILOG_DEV | XFS_ILOG_UUID);
if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
- (ip->i_d.di_nextents > 0) &&
- (ip->i_df.if_bytes > 0)) {
- ASSERT(ip->i_df.if_u1.if_extents != NULL);
+ ip->i_d.di_nextents > 0 &&
+ ip->i_df.if_bytes > 0)
nvecs++;
- } else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_DEXT;
- }
break;
case XFS_DINODE_FMT_BTREE:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
- XFS_ILOG_DEV | XFS_ILOG_UUID);
if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
- (ip->i_df.if_broot_bytes > 0)) {
- ASSERT(ip->i_df.if_broot != NULL);
+ ip->i_df.if_broot_bytes > 0)
nvecs++;
- } else {
- ASSERT(!(iip->ili_format.ilf_fields &
- XFS_ILOG_DBROOT));
-#ifdef XFS_TRANS_DEBUG
- if (iip->ili_root_size > 0) {
- ASSERT(iip->ili_root_size ==
- ip->i_df.if_broot_bytes);
- ASSERT(memcmp(iip->ili_orig_root,
- ip->i_df.if_broot,
- iip->ili_root_size) == 0);
- } else {
- ASSERT(ip->i_df.if_broot_bytes == 0);
- }
-#endif
- iip->ili_format.ilf_fields &= ~XFS_ILOG_DBROOT;
- }
break;
case XFS_DINODE_FMT_LOCAL:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT |
- XFS_ILOG_DEV | XFS_ILOG_UUID);
if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
- (ip->i_df.if_bytes > 0)) {
- ASSERT(ip->i_df.if_u1.if_data != NULL);
- ASSERT(ip->i_d.di_size > 0);
+ ip->i_df.if_bytes > 0)
nvecs++;
- } else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_DDATA;
- }
break;
case XFS_DINODE_FMT_DEV:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
- XFS_ILOG_DEXT | XFS_ILOG_UUID);
- break;
-
case XFS_DINODE_FMT_UUID:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
- XFS_ILOG_DEXT | XFS_ILOG_DEV);
break;
default:
@@ -135,56 +86,31 @@ xfs_inode_item_size(
break;
}
- /*
- * If there are no attributes associated with this file,
- * then there cannot be anything more to log.
- * Clear all attribute-related log flags.
- */
- if (!XFS_IFORK_Q(ip)) {
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT);
+ if (!XFS_IFORK_Q(ip))
return nvecs;
- }
+
/*
* Log any necessary attribute data.
*/
switch (ip->i_d.di_aformat) {
case XFS_DINODE_FMT_EXTENTS:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT);
if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
- (ip->i_d.di_anextents > 0) &&
- (ip->i_afp->if_bytes > 0)) {
- ASSERT(ip->i_afp->if_u1.if_extents != NULL);
+ ip->i_d.di_anextents > 0 &&
+ ip->i_afp->if_bytes > 0)
nvecs++;
- } else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_AEXT;
- }
break;
case XFS_DINODE_FMT_BTREE:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT);
if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
- (ip->i_afp->if_broot_bytes > 0)) {
- ASSERT(ip->i_afp->if_broot != NULL);
+ ip->i_afp->if_broot_bytes > 0)
nvecs++;
- } else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_ABROOT;
- }
break;
case XFS_DINODE_FMT_LOCAL:
- iip->ili_format.ilf_fields &=
- ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
- (ip->i_afp->if_bytes > 0)) {
- ASSERT(ip->i_afp->if_u1.if_data != NULL);
+ ip->i_afp->if_bytes > 0)
nvecs++;
- } else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_ADATA;
- }
break;
default:
@@ -292,16 +218,17 @@ xfs_inode_item_format(
switch (ip->i_d.di_format) {
case XFS_DINODE_FMT_EXTENTS:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
- XFS_ILOG_DEV | XFS_ILOG_UUID)));
- if (iip->ili_format.ilf_fields & XFS_ILOG_DEXT) {
- ASSERT(ip->i_df.if_bytes > 0);
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
+ XFS_ILOG_DEV | XFS_ILOG_UUID);
+
+ if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
+ ip->i_d.di_nextents > 0 &&
+ ip->i_df.if_bytes > 0) {
ASSERT(ip->i_df.if_u1.if_extents != NULL);
- ASSERT(ip->i_d.di_nextents > 0);
+ ASSERT(ip->i_df.if_bytes / sizeof(xfs_bmbt_rec_t) > 0);
ASSERT(iip->ili_extents_buf == NULL);
- ASSERT((ip->i_df.if_bytes /
- (uint)sizeof(xfs_bmbt_rec_t)) > 0);
+
#ifdef XFS_NATIVE_HOST
if (ip->i_d.di_nextents == ip->i_df.if_bytes /
(uint)sizeof(xfs_bmbt_rec_t)) {
@@ -323,15 +250,18 @@ xfs_inode_item_format(
iip->ili_format.ilf_dsize = vecp->i_len;
vecp++;
nvecs++;
+ } else {
+ iip->ili_format.ilf_fields &= ~XFS_ILOG_DEXT;
}
break;
case XFS_DINODE_FMT_BTREE:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_DDATA | XFS_ILOG_DEXT |
- XFS_ILOG_DEV | XFS_ILOG_UUID)));
- if (iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) {
- ASSERT(ip->i_df.if_broot_bytes > 0);
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
+ XFS_ILOG_DEV | XFS_ILOG_UUID);
+
+ if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
+ ip->i_df.if_broot_bytes > 0) {
ASSERT(ip->i_df.if_broot != NULL);
vecp->i_addr = ip->i_df.if_broot;
vecp->i_len = ip->i_df.if_broot_bytes;
@@ -339,15 +269,30 @@ xfs_inode_item_format(
vecp++;
nvecs++;
iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes;
+ } else {
+ ASSERT(!(iip->ili_format.ilf_fields &
+ XFS_ILOG_DBROOT));
+#ifdef XFS_TRANS_DEBUG
+ if (iip->ili_root_size > 0) {
+ ASSERT(iip->ili_root_size ==
+ ip->i_df.if_broot_bytes);
+ ASSERT(memcmp(iip->ili_orig_root,
+ ip->i_df.if_broot,
+ iip->ili_root_size) == 0);
+ } else {
+ ASSERT(ip->i_df.if_broot_bytes == 0);
+ }
+#endif
+ iip->ili_format.ilf_fields &= ~XFS_ILOG_DBROOT;
}
break;
case XFS_DINODE_FMT_LOCAL:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
- XFS_ILOG_DEV | XFS_ILOG_UUID)));
- if (iip->ili_format.ilf_fields & XFS_ILOG_DDATA) {
- ASSERT(ip->i_df.if_bytes > 0);
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT |
+ XFS_ILOG_DEV | XFS_ILOG_UUID);
+ if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
+ ip->i_df.if_bytes > 0) {
ASSERT(ip->i_df.if_u1.if_data != NULL);
ASSERT(ip->i_d.di_size > 0);
@@ -365,13 +310,15 @@ xfs_inode_item_format(
vecp++;
nvecs++;
iip->ili_format.ilf_dsize = (unsigned)data_bytes;
+ } else {
+ iip->ili_format.ilf_fields &= ~XFS_ILOG_DDATA;
}
break;
case XFS_DINODE_FMT_DEV:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
- XFS_ILOG_DDATA | XFS_ILOG_UUID)));
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
+ XFS_ILOG_DEXT | XFS_ILOG_UUID);
if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
iip->ili_format.ilf_u.ilfu_rdev =
ip->i_df.if_u2.if_rdev;
@@ -379,9 +326,9 @@ xfs_inode_item_format(
break;
case XFS_DINODE_FMT_UUID:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_DBROOT | XFS_ILOG_DEXT |
- XFS_ILOG_DDATA | XFS_ILOG_DEV)));
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
+ XFS_ILOG_DEXT | XFS_ILOG_DEV);
if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
iip->ili_format.ilf_u.ilfu_uuid =
ip->i_df.if_u2.if_uuid;
@@ -394,31 +341,26 @@ xfs_inode_item_format(
}
/*
- * If there are no attributes associated with the file,
- * then we're done.
- * Assert that no attribute-related log flags are set.
+ * If there are no attributes associated with the file, then we're done.
*/
if (!XFS_IFORK_Q(ip)) {
iip->ili_format.ilf_size = nvecs;
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT);
return;
}
switch (ip->i_d.di_aformat) {
case XFS_DINODE_FMT_EXTENTS:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_ADATA | XFS_ILOG_ABROOT)));
- if (iip->ili_format.ilf_fields & XFS_ILOG_AEXT) {
-#ifdef DEBUG
- int nrecs = ip->i_afp->if_bytes /
- (uint)sizeof(xfs_bmbt_rec_t);
- ASSERT(nrecs > 0);
- ASSERT(nrecs == ip->i_d.di_anextents);
- ASSERT(ip->i_afp->if_bytes > 0);
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT);
+
+ if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
+ ip->i_d.di_anextents > 0 &&
+ ip->i_afp->if_bytes > 0) {
+ ASSERT(ip->i_afp->if_bytes / sizeof(xfs_bmbt_rec_t) ==
+ ip->i_d.di_anextents);
ASSERT(ip->i_afp->if_u1.if_extents != NULL);
- ASSERT(ip->i_d.di_anextents > 0);
-#endif
#ifdef XFS_NATIVE_HOST
/*
* There are not delayed allocation extents
@@ -435,28 +377,36 @@ xfs_inode_item_format(
iip->ili_format.ilf_asize = vecp->i_len;
vecp++;
nvecs++;
+ } else {
+ iip->ili_format.ilf_fields &= ~XFS_ILOG_AEXT;
}
break;
case XFS_DINODE_FMT_BTREE:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_ADATA | XFS_ILOG_AEXT)));
- if (iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) {
- ASSERT(ip->i_afp->if_broot_bytes > 0);
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_ADATA | XFS_ILOG_AEXT);
+
+ if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
+ ip->i_afp->if_broot_bytes > 0) {
ASSERT(ip->i_afp->if_broot != NULL);
+
vecp->i_addr = ip->i_afp->if_broot;
vecp->i_len = ip->i_afp->if_broot_bytes;
vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT;
vecp++;
nvecs++;
iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes;
+ } else {
+ iip->ili_format.ilf_fields &= ~XFS_ILOG_ABROOT;
}
break;
case XFS_DINODE_FMT_LOCAL:
- ASSERT(!(iip->ili_format.ilf_fields &
- (XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
- if (iip->ili_format.ilf_fields & XFS_ILOG_ADATA) {
+ iip->ili_format.ilf_fields &=
+ ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
+
+ if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
+ ip->i_afp->if_bytes > 0) {
ASSERT(ip->i_afp->if_bytes > 0);
ASSERT(ip->i_afp->if_u1.if_data != NULL);
@@ -474,6 +424,8 @@ xfs_inode_item_format(
vecp++;
nvecs++;
iip->ili_format.ilf_asize = (unsigned)data_bytes;
+ } else {
+ iip->ili_format.ilf_fields &= ~XFS_ILOG_ADATA;
}
break;
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http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 6/8] xfs: make xfs_inode_item_size idempotent
2012-02-21 0:38 ` [PATCH 6/8] xfs: make xfs_inode_item_size idempotent Christoph Hellwig
@ 2012-02-21 5:14 ` Dave Chinner
2012-02-28 11:08 ` Christoph Hellwig
0 siblings, 1 reply; 14+ messages in thread
From: Dave Chinner @ 2012-02-21 5:14 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: xfs
On Mon, Feb 20, 2012 at 07:38:30PM -0500, Christoph Hellwig wrote:
> Move all code messing with the inode log item flags into xfs_inode_item_format
> to make sure xfs_inode_item_size really only calculates the the number of
> vectors, but doesn't modify any state of the inode item.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks ok so:
Reviewed-by: Dave Chinner <dchinner@redhat.com>
One minor cleanup:
> case XFS_DINODE_FMT_LOCAL:
> - ASSERT(!(iip->ili_format.ilf_fields &
> - (XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
> - if (iip->ili_format.ilf_fields & XFS_ILOG_ADATA) {
> + iip->ili_format.ilf_fields &=
> + ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
> +
> + if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
> + ip->i_afp->if_bytes > 0) {
> ASSERT(ip->i_afp->if_bytes > 0);
That assert can go - it's checked in the if statement now.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 6/8] xfs: make xfs_inode_item_size idempotent
2012-02-21 5:14 ` Dave Chinner
@ 2012-02-28 11:08 ` Christoph Hellwig
0 siblings, 0 replies; 14+ messages in thread
From: Christoph Hellwig @ 2012-02-28 11:08 UTC (permalink / raw)
To: Dave Chinner; +Cc: Christoph Hellwig, xfs
On Tue, Feb 21, 2012 at 04:14:04PM +1100, Dave Chinner wrote:
> One minor cleanup:
>
> > case XFS_DINODE_FMT_LOCAL:
> > - ASSERT(!(iip->ili_format.ilf_fields &
> > - (XFS_ILOG_ABROOT | XFS_ILOG_AEXT)));
> > - if (iip->ili_format.ilf_fields & XFS_ILOG_ADATA) {
> > + iip->ili_format.ilf_fields &=
> > + ~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
> > +
> > + if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
> > + ip->i_afp->if_bytes > 0) {
> > ASSERT(ip->i_afp->if_bytes > 0);
>
> That assert can go - it's checked in the if statement now.
Fixed.
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^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 7/8] xfs: split in-core and on-disk inode log item fields
2012-02-21 0:38 [PATCH 0/8] log all inode updates V2 Christoph Hellwig
` (2 preceding siblings ...)
2012-02-21 0:38 ` [PATCH 6/8] xfs: make xfs_inode_item_size idempotent Christoph Hellwig
@ 2012-02-21 0:38 ` Christoph Hellwig
2012-02-21 5:18 ` Dave Chinner
2012-02-21 0:38 ` [PATCH 8/8] xfs: add back fdatasync support Christoph Hellwig
4 siblings, 1 reply; 14+ messages in thread
From: Christoph Hellwig @ 2012-02-21 0:38 UTC (permalink / raw)
To: xfs
[-- Attachment #1: xfs-ilf_fields-cleanup --]
[-- Type: text/plain, Size: 19230 bytes --]
Add a new ili_fields member to the inode log item to isolate the in-memory
flags from the ones that actually go to the log. This will allow tracking
timestamp-only updates for fdatasync and O_DSYNC in the next patch and
prepares for divorcing the on-disk log format from the in-memory log item
a little further down the road.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_dfrag.c | 24 ++++++-------
fs/xfs/xfs_inode.c | 71 +++++++++++++++++++---------------------
fs/xfs/xfs_inode_item.c | 83 ++++++++++++++++++++++++-----------------------
fs/xfs/xfs_inode_item.h | 4 +-
fs/xfs/xfs_trans_inode.c | 4 +-
5 files changed, 93 insertions(+), 93 deletions(-)
Index: xfs/fs/xfs/xfs_dfrag.c
===================================================================
--- xfs.orig/fs/xfs/xfs_dfrag.c 2012-02-20 12:08:36.489988926 -0800
+++ xfs/fs/xfs/xfs_dfrag.c 2012-02-20 12:08:44.379988903 -0800
@@ -215,7 +215,7 @@ xfs_swap_extents(
xfs_trans_t *tp;
xfs_bstat_t *sbp = &sxp->sx_stat;
xfs_ifork_t *tempifp, *ifp, *tifp;
- int ilf_fields, tilf_fields;
+ int src_log_flags, target_log_flags;
int error = 0;
int aforkblks = 0;
int taforkblks = 0;
@@ -385,9 +385,8 @@ xfs_swap_extents(
tip->i_delayed_blks = ip->i_delayed_blks;
ip->i_delayed_blks = 0;
- ilf_fields = XFS_ILOG_CORE;
-
- switch(ip->i_d.di_format) {
+ src_log_flags = XFS_ILOG_CORE;
+ switch (ip->i_d.di_format) {
case XFS_DINODE_FMT_EXTENTS:
/* If the extents fit in the inode, fix the
* pointer. Otherwise it's already NULL or
@@ -397,16 +396,15 @@ xfs_swap_extents(
ifp->if_u1.if_extents =
ifp->if_u2.if_inline_ext;
}
- ilf_fields |= XFS_ILOG_DEXT;
+ src_log_flags |= XFS_ILOG_DEXT;
break;
case XFS_DINODE_FMT_BTREE:
- ilf_fields |= XFS_ILOG_DBROOT;
+ src_log_flags |= XFS_ILOG_DBROOT;
break;
}
- tilf_fields = XFS_ILOG_CORE;
-
- switch(tip->i_d.di_format) {
+ target_log_flags = XFS_ILOG_CORE;
+ switch (tip->i_d.di_format) {
case XFS_DINODE_FMT_EXTENTS:
/* If the extents fit in the inode, fix the
* pointer. Otherwise it's already NULL or
@@ -416,10 +414,10 @@ xfs_swap_extents(
tifp->if_u1.if_extents =
tifp->if_u2.if_inline_ext;
}
- tilf_fields |= XFS_ILOG_DEXT;
+ target_log_flags |= XFS_ILOG_DEXT;
break;
case XFS_DINODE_FMT_BTREE:
- tilf_fields |= XFS_ILOG_DBROOT;
+ target_log_flags |= XFS_ILOG_DBROOT;
break;
}
@@ -427,8 +425,8 @@ xfs_swap_extents(
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
xfs_trans_ijoin(tp, tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
- xfs_trans_log_inode(tp, ip, ilf_fields);
- xfs_trans_log_inode(tp, tip, tilf_fields);
+ xfs_trans_log_inode(tp, ip, src_log_flags);
+ xfs_trans_log_inode(tp, tip, target_log_flags);
/*
* If this is a synchronous mount, make sure that the
Index: xfs/fs/xfs/xfs_inode.c
===================================================================
--- xfs.orig/fs/xfs/xfs_inode.c 2012-02-20 12:08:36.499988925 -0800
+++ xfs/fs/xfs/xfs_inode.c 2012-02-20 12:08:44.379988903 -0800
@@ -1661,8 +1661,8 @@ retry:
continue;
}
- iip->ili_last_fields = iip->ili_format.ilf_fields;
- iip->ili_format.ilf_fields = 0;
+ iip->ili_last_fields = iip->ili_fields;
+ iip->ili_fields = 0;
iip->ili_logged = 1;
xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
&iip->ili_item.li_lsn);
@@ -2176,7 +2176,7 @@ xfs_iflush_fork(
mp = ip->i_mount;
switch (XFS_IFORK_FORMAT(ip, whichfork)) {
case XFS_DINODE_FMT_LOCAL:
- if ((iip->ili_format.ilf_fields & dataflag[whichfork]) &&
+ if ((iip->ili_fields & dataflag[whichfork]) &&
(ifp->if_bytes > 0)) {
ASSERT(ifp->if_u1.if_data != NULL);
ASSERT(ifp->if_bytes <= XFS_IFORK_SIZE(ip, whichfork));
@@ -2186,8 +2186,8 @@ xfs_iflush_fork(
case XFS_DINODE_FMT_EXTENTS:
ASSERT((ifp->if_flags & XFS_IFEXTENTS) ||
- !(iip->ili_format.ilf_fields & extflag[whichfork]));
- if ((iip->ili_format.ilf_fields & extflag[whichfork]) &&
+ !(iip->ili_fields & extflag[whichfork]));
+ if ((iip->ili_fields & extflag[whichfork]) &&
(ifp->if_bytes > 0)) {
ASSERT(xfs_iext_get_ext(ifp, 0));
ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0);
@@ -2197,7 +2197,7 @@ xfs_iflush_fork(
break;
case XFS_DINODE_FMT_BTREE:
- if ((iip->ili_format.ilf_fields & brootflag[whichfork]) &&
+ if ((iip->ili_fields & brootflag[whichfork]) &&
(ifp->if_broot_bytes > 0)) {
ASSERT(ifp->if_broot != NULL);
ASSERT(ifp->if_broot_bytes <=
@@ -2210,14 +2210,14 @@ xfs_iflush_fork(
break;
case XFS_DINODE_FMT_DEV:
- if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
+ if (iip->ili_fields & XFS_ILOG_DEV) {
ASSERT(whichfork == XFS_DATA_FORK);
xfs_dinode_put_rdev(dip, ip->i_df.if_u2.if_rdev);
}
break;
case XFS_DINODE_FMT_UUID:
- if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
+ if (iip->ili_fields & XFS_ILOG_UUID) {
ASSERT(whichfork == XFS_DATA_FORK);
memcpy(XFS_DFORK_DPTR(dip),
&ip->i_df.if_u2.if_uuid,
@@ -2451,7 +2451,7 @@ xfs_iflush(
*/
if (XFS_FORCED_SHUTDOWN(mp)) {
if (iip)
- iip->ili_format.ilf_fields = 0;
+ iip->ili_fields = 0;
xfs_ifunlock(ip);
return XFS_ERROR(EIO);
}
@@ -2641,36 +2641,33 @@ xfs_iflush_int(
xfs_inobp_check(mp, bp);
/*
- * We've recorded everything logged in the inode, so we'd
- * like to clear the ilf_fields bits so we don't log and
- * flush things unnecessarily. However, we can't stop
- * logging all this information until the data we've copied
- * into the disk buffer is written to disk. If we did we might
- * overwrite the copy of the inode in the log with all the
- * data after re-logging only part of it, and in the face of
- * a crash we wouldn't have all the data we need to recover.
+ * We've recorded everything logged in the inode, so we'd like to clear
+ * the ili_fields bits so we don't log and flush things unnecessarily.
+ * However, we can't stop logging all this information until the data
+ * we've copied into the disk buffer is written to disk. If we did we
+ * might overwrite the copy of the inode in the log with all the data
+ * after re-logging only part of it, and in the face of a crash we
+ * wouldn't have all the data we need to recover.
*
- * What we do is move the bits to the ili_last_fields field.
- * When logging the inode, these bits are moved back to the
- * ilf_fields field. In the xfs_iflush_done() routine we
- * clear ili_last_fields, since we know that the information
- * those bits represent is permanently on disk. As long as
- * the flush completes before the inode is logged again, then
- * both ilf_fields and ili_last_fields will be cleared.
+ * What we do is move the bits to the ili_last_fields field. When
+ * logging the inode, these bits are moved back to the ili_fields field.
+ * In the xfs_iflush_done() routine we clear ili_last_fields, since we
+ * know that the information those bits represent is permanently on
+ * disk. As long as the flush completes before the inode is logged
+ * again, then both ili_fields and ili_last_fields will be cleared.
*
- * We can play with the ilf_fields bits here, because the inode
- * lock must be held exclusively in order to set bits there
- * and the flush lock protects the ili_last_fields bits.
- * Set ili_logged so the flush done
- * routine can tell whether or not to look in the AIL.
- * Also, store the current LSN of the inode so that we can tell
- * whether the item has moved in the AIL from xfs_iflush_done().
- * In order to read the lsn we need the AIL lock, because
- * it is a 64 bit value that cannot be read atomically.
- */
- if (iip != NULL && iip->ili_format.ilf_fields != 0) {
- iip->ili_last_fields = iip->ili_format.ilf_fields;
- iip->ili_format.ilf_fields = 0;
+ * We can play with the ili_fields bits here, because the inode lock
+ * must be held exclusively in order to set bits there and the flush
+ * lock protects the ili_last_fields bits. Set ili_logged so the flush
+ * done routine can tell whether or not to look in the AIL. Also, store
+ * the current LSN of the inode so that we can tell whether the item has
+ * moved in the AIL from xfs_iflush_done(). In order to read the lsn we
+ * need the AIL lock, because it is a 64 bit value that cannot be read
+ * atomically.
+ */
+ if (iip != NULL && iip->ili_fields != 0) {
+ iip->ili_last_fields = iip->ili_fields;
+ iip->ili_fields = 0;
iip->ili_logged = 1;
xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
Index: xfs/fs/xfs/xfs_inode_item.c
===================================================================
--- xfs.orig/fs/xfs/xfs_inode_item.c 2012-02-20 12:08:39.456655583 -0800
+++ xfs/fs/xfs/xfs_inode_item.c 2012-02-20 12:08:44.379988903 -0800
@@ -59,20 +59,20 @@ xfs_inode_item_size(
switch (ip->i_d.di_format) {
case XFS_DINODE_FMT_EXTENTS:
- if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
+ if ((iip->ili_fields & XFS_ILOG_DEXT) &&
ip->i_d.di_nextents > 0 &&
ip->i_df.if_bytes > 0)
nvecs++;
break;
case XFS_DINODE_FMT_BTREE:
- if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
+ if ((iip->ili_fields & XFS_ILOG_DBROOT) &&
ip->i_df.if_broot_bytes > 0)
nvecs++;
break;
case XFS_DINODE_FMT_LOCAL:
- if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
+ if ((iip->ili_fields & XFS_ILOG_DDATA) &&
ip->i_df.if_bytes > 0)
nvecs++;
break;
@@ -95,20 +95,20 @@ xfs_inode_item_size(
*/
switch (ip->i_d.di_aformat) {
case XFS_DINODE_FMT_EXTENTS:
- if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
+ if ((iip->ili_fields & XFS_ILOG_AEXT) &&
ip->i_d.di_anextents > 0 &&
ip->i_afp->if_bytes > 0)
nvecs++;
break;
case XFS_DINODE_FMT_BTREE:
- if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
+ if ((iip->ili_fields & XFS_ILOG_ABROOT) &&
ip->i_afp->if_broot_bytes > 0)
nvecs++;
break;
case XFS_DINODE_FMT_LOCAL:
- if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
+ if ((iip->ili_fields & XFS_ILOG_ADATA) &&
ip->i_afp->if_bytes > 0)
nvecs++;
break;
@@ -185,7 +185,6 @@ xfs_inode_item_format(
vecp->i_type = XLOG_REG_TYPE_ICORE;
vecp++;
nvecs++;
- iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
/*
* If this is really an old format inode, then we need to
@@ -218,11 +217,11 @@ xfs_inode_item_format(
switch (ip->i_d.di_format) {
case XFS_DINODE_FMT_EXTENTS:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
XFS_ILOG_DEV | XFS_ILOG_UUID);
- if ((iip->ili_format.ilf_fields & XFS_ILOG_DEXT) &&
+ if ((iip->ili_fields & XFS_ILOG_DEXT) &&
ip->i_d.di_nextents > 0 &&
ip->i_df.if_bytes > 0) {
ASSERT(ip->i_df.if_u1.if_extents != NULL);
@@ -251,16 +250,16 @@ xfs_inode_item_format(
vecp++;
nvecs++;
} else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_DEXT;
+ iip->ili_fields &= ~XFS_ILOG_DEXT;
}
break;
case XFS_DINODE_FMT_BTREE:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_DDATA | XFS_ILOG_DEXT |
XFS_ILOG_DEV | XFS_ILOG_UUID);
- if ((iip->ili_format.ilf_fields & XFS_ILOG_DBROOT) &&
+ if ((iip->ili_fields & XFS_ILOG_DBROOT) &&
ip->i_df.if_broot_bytes > 0) {
ASSERT(ip->i_df.if_broot != NULL);
vecp->i_addr = ip->i_df.if_broot;
@@ -270,7 +269,7 @@ xfs_inode_item_format(
nvecs++;
iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes;
} else {
- ASSERT(!(iip->ili_format.ilf_fields &
+ ASSERT(!(iip->ili_fields &
XFS_ILOG_DBROOT));
#ifdef XFS_TRANS_DEBUG
if (iip->ili_root_size > 0) {
@@ -283,15 +282,15 @@ xfs_inode_item_format(
ASSERT(ip->i_df.if_broot_bytes == 0);
}
#endif
- iip->ili_format.ilf_fields &= ~XFS_ILOG_DBROOT;
+ iip->ili_fields &= ~XFS_ILOG_DBROOT;
}
break;
case XFS_DINODE_FMT_LOCAL:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_DEXT | XFS_ILOG_DBROOT |
XFS_ILOG_DEV | XFS_ILOG_UUID);
- if ((iip->ili_format.ilf_fields & XFS_ILOG_DDATA) &&
+ if ((iip->ili_fields & XFS_ILOG_DDATA) &&
ip->i_df.if_bytes > 0) {
ASSERT(ip->i_df.if_u1.if_data != NULL);
ASSERT(ip->i_d.di_size > 0);
@@ -311,25 +310,25 @@ xfs_inode_item_format(
nvecs++;
iip->ili_format.ilf_dsize = (unsigned)data_bytes;
} else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_DDATA;
+ iip->ili_fields &= ~XFS_ILOG_DDATA;
}
break;
case XFS_DINODE_FMT_DEV:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
XFS_ILOG_DEXT | XFS_ILOG_UUID);
- if (iip->ili_format.ilf_fields & XFS_ILOG_DEV) {
+ if (iip->ili_fields & XFS_ILOG_DEV) {
iip->ili_format.ilf_u.ilfu_rdev =
ip->i_df.if_u2.if_rdev;
}
break;
case XFS_DINODE_FMT_UUID:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_DDATA | XFS_ILOG_DBROOT |
XFS_ILOG_DEXT | XFS_ILOG_DEV);
- if (iip->ili_format.ilf_fields & XFS_ILOG_UUID) {
+ if (iip->ili_fields & XFS_ILOG_UUID) {
iip->ili_format.ilf_u.ilfu_uuid =
ip->i_df.if_u2.if_uuid;
}
@@ -344,18 +343,17 @@ xfs_inode_item_format(
* If there are no attributes associated with the file, then we're done.
*/
if (!XFS_IFORK_Q(ip)) {
- iip->ili_format.ilf_size = nvecs;
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT | XFS_ILOG_AEXT);
- return;
+ goto out;
}
switch (ip->i_d.di_aformat) {
case XFS_DINODE_FMT_EXTENTS:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_ADATA | XFS_ILOG_ABROOT);
- if ((iip->ili_format.ilf_fields & XFS_ILOG_AEXT) &&
+ if ((iip->ili_fields & XFS_ILOG_AEXT) &&
ip->i_d.di_anextents > 0 &&
ip->i_afp->if_bytes > 0) {
ASSERT(ip->i_afp->if_bytes / sizeof(xfs_bmbt_rec_t) ==
@@ -378,15 +376,15 @@ xfs_inode_item_format(
vecp++;
nvecs++;
} else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_AEXT;
+ iip->ili_fields &= ~XFS_ILOG_AEXT;
}
break;
case XFS_DINODE_FMT_BTREE:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_ADATA | XFS_ILOG_AEXT);
- if ((iip->ili_format.ilf_fields & XFS_ILOG_ABROOT) &&
+ if ((iip->ili_fields & XFS_ILOG_ABROOT) &&
ip->i_afp->if_broot_bytes > 0) {
ASSERT(ip->i_afp->if_broot != NULL);
@@ -397,15 +395,15 @@ xfs_inode_item_format(
nvecs++;
iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes;
} else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_ABROOT;
+ iip->ili_fields &= ~XFS_ILOG_ABROOT;
}
break;
case XFS_DINODE_FMT_LOCAL:
- iip->ili_format.ilf_fields &=
+ iip->ili_fields &=
~(XFS_ILOG_AEXT | XFS_ILOG_ABROOT);
- if ((iip->ili_format.ilf_fields & XFS_ILOG_ADATA) &&
+ if ((iip->ili_fields & XFS_ILOG_ADATA) &&
ip->i_afp->if_bytes > 0) {
ASSERT(ip->i_afp->if_bytes > 0);
ASSERT(ip->i_afp->if_u1.if_data != NULL);
@@ -425,7 +423,7 @@ xfs_inode_item_format(
nvecs++;
iip->ili_format.ilf_asize = (unsigned)data_bytes;
} else {
- iip->ili_format.ilf_fields &= ~XFS_ILOG_ADATA;
+ iip->ili_fields &= ~XFS_ILOG_ADATA;
}
break;
@@ -434,6 +432,14 @@ xfs_inode_item_format(
break;
}
+out:
+ /*
+ * Now update the log format that goes out to disk from the in-core
+ * values. We always write the inode core to make the arithmetic
+ * games in recovery easier, which isn't a big deal as just about any
+ * transaction would dirty it anyway.
+ */
+ iip->ili_format.ilf_fields = XFS_ILOG_CORE | iip->ili_fields;
iip->ili_format.ilf_size = nvecs;
}
@@ -518,7 +524,7 @@ xfs_inode_item_trylock(
#ifdef DEBUG
if (!XFS_FORCED_SHUTDOWN(ip->i_mount)) {
- ASSERT(iip->ili_format.ilf_fields != 0);
+ ASSERT(iip->ili_fields != 0);
ASSERT(iip->ili_logged == 0);
ASSERT(lip->li_flags & XFS_LI_IN_AIL);
}
@@ -550,7 +556,7 @@ xfs_inode_item_unlock(
if (iip->ili_extents_buf != NULL) {
ASSERT(ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS);
ASSERT(ip->i_d.di_nextents > 0);
- ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_DEXT);
+ ASSERT(iip->ili_fields & XFS_ILOG_DEXT);
ASSERT(ip->i_df.if_bytes > 0);
kmem_free(iip->ili_extents_buf);
iip->ili_extents_buf = NULL;
@@ -558,7 +564,7 @@ xfs_inode_item_unlock(
if (iip->ili_aextents_buf != NULL) {
ASSERT(ip->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS);
ASSERT(ip->i_d.di_anextents > 0);
- ASSERT(iip->ili_format.ilf_fields & XFS_ILOG_AEXT);
+ ASSERT(iip->ili_fields & XFS_ILOG_AEXT);
ASSERT(ip->i_afp->if_bytes > 0);
kmem_free(iip->ili_aextents_buf);
iip->ili_aextents_buf = NULL;
@@ -673,8 +679,7 @@ xfs_inode_item_push(
* lock without sleeping, then there must not have been
* anyone in the process of flushing the inode.
*/
- ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) ||
- iip->ili_format.ilf_fields != 0);
+ ASSERT(XFS_FORCED_SHUTDOWN(ip->i_mount) || iip->ili_fields != 0);
/*
* Push the inode to it's backing buffer. This will not remove the
@@ -897,7 +902,7 @@ xfs_iflush_abort(
* Clear the inode logging fields so no more flushes are
* attempted.
*/
- iip->ili_format.ilf_fields = 0;
+ iip->ili_fields = 0;
}
/*
* Release the inode's flush lock since we're done with it.
Index: xfs/fs/xfs/xfs_inode_item.h
===================================================================
--- xfs.orig/fs/xfs/xfs_inode_item.h 2012-02-20 12:08:36.523322258 -0800
+++ xfs/fs/xfs/xfs_inode_item.h 2012-02-20 12:08:44.383322236 -0800
@@ -134,6 +134,7 @@ typedef struct xfs_inode_log_item {
unsigned short ili_lock_flags; /* lock flags */
unsigned short ili_logged; /* flushed logged data */
unsigned int ili_last_fields; /* fields when flushed */
+ unsigned int ili_fields; /* fields to be logged */
struct xfs_bmbt_rec *ili_extents_buf; /* array of logged
data exts */
struct xfs_bmbt_rec *ili_aextents_buf; /* array of logged
@@ -148,8 +149,7 @@ typedef struct xfs_inode_log_item {
static inline int xfs_inode_clean(xfs_inode_t *ip)
{
- return !ip->i_itemp ||
- !(ip->i_itemp->ili_format.ilf_fields & XFS_ILOG_ALL);
+ return !ip->i_itemp || !(ip->i_itemp->ili_fields & XFS_ILOG_ALL);
}
extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
Index: xfs/fs/xfs/xfs_trans_inode.c
===================================================================
--- xfs.orig/fs/xfs/xfs_trans_inode.c 2012-02-20 12:08:36.539988924 -0800
+++ xfs/fs/xfs/xfs_trans_inode.c 2012-02-20 12:08:44.383322236 -0800
@@ -130,12 +130,12 @@ xfs_trans_log_inode(
/*
* Always OR in the bits from the ili_last_fields field.
* This is to coordinate with the xfs_iflush() and xfs_iflush_done()
- * routines in the eventual clearing of the ilf_fields bits.
+ * routines in the eventual clearing of the ili_fields bits.
* See the big comment in xfs_iflush() for an explanation of
* this coordination mechanism.
*/
flags |= ip->i_itemp->ili_last_fields;
- ip->i_itemp->ili_format.ilf_fields |= flags;
+ ip->i_itemp->ili_fields |= flags;
}
#ifdef XFS_TRANS_DEBUG
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http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 7/8] xfs: split in-core and on-disk inode log item fields
2012-02-21 0:38 ` [PATCH 7/8] xfs: split in-core and on-disk inode log item fields Christoph Hellwig
@ 2012-02-21 5:18 ` Dave Chinner
0 siblings, 0 replies; 14+ messages in thread
From: Dave Chinner @ 2012-02-21 5:18 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: xfs
On Mon, Feb 20, 2012 at 07:38:31PM -0500, Christoph Hellwig wrote:
> Add a new ili_fields member to the inode log item to isolate the in-memory
> flags from the ones that actually go to the log. This will allow tracking
> timestamp-only updates for fdatasync and O_DSYNC in the next patch and
> prepares for divorcing the on-disk log format from the in-memory log item
> a little further down the road.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks good.
Reviewed-by: Dave Chinner <dchinner@redhat.com>
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
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http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH 8/8] xfs: add back fdatasync support
2012-02-21 0:38 [PATCH 0/8] log all inode updates V2 Christoph Hellwig
` (3 preceding siblings ...)
2012-02-21 0:38 ` [PATCH 7/8] xfs: split in-core and on-disk inode log item fields Christoph Hellwig
@ 2012-02-21 0:38 ` Christoph Hellwig
2012-02-21 5:23 ` Dave Chinner
2012-03-08 20:04 ` Ben Myers
4 siblings, 2 replies; 14+ messages in thread
From: Christoph Hellwig @ 2012-02-21 0:38 UTC (permalink / raw)
To: xfs
[-- Attachment #1: xfs-implement-fdatasync --]
[-- Type: text/plain, Size: 3374 bytes --]
Add an in-memory only flag to say we logged timestamps only, and use it to
check if fdatasync can optimize away the log force.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/xfs_file.c | 7 +++++--
fs/xfs/xfs_inode_item.c | 3 ++-
fs/xfs/xfs_inode_item.h | 12 +++++++++++-
fs/xfs/xfs_super.c | 2 +-
4 files changed, 19 insertions(+), 5 deletions(-)
Index: xfs/fs/xfs/xfs_inode_item.c
===================================================================
--- xfs.orig/fs/xfs/xfs_inode_item.c 2012-02-20 12:08:44.379988903 -0800
+++ xfs/fs/xfs/xfs_inode_item.c 2012-02-20 12:10:27.239988625 -0800
@@ -439,7 +439,8 @@ out:
* games in recovery easier, which isn't a big deal as just about any
* transaction would dirty it anyway.
*/
- iip->ili_format.ilf_fields = XFS_ILOG_CORE | iip->ili_fields;
+ iip->ili_format.ilf_fields = XFS_ILOG_CORE |
+ (iip->ili_fields & ~XFS_ILOG_TIMESTAMP);
iip->ili_format.ilf_size = nvecs;
}
Index: xfs/fs/xfs/xfs_inode_item.h
===================================================================
--- xfs.orig/fs/xfs/xfs_inode_item.h 2012-02-20 12:08:44.383322236 -0800
+++ xfs/fs/xfs/xfs_inode_item.h 2012-02-20 12:10:27.239988625 -0800
@@ -86,6 +86,16 @@ typedef struct xfs_inode_log_format_64 {
#define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
#define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
+
+/*
+ * The timestamps in the core are dirty, but not nessecarily anything
+ * else.
+ *
+ * This is an incore only value store in ilf_fields & co, which must
+ * never make it to disk, unlike the other fields above.
+ */
+#define XFS_ILOG_TIMESTAMP 0x4000
+
#define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
XFS_ILOG_UUID | XFS_ILOG_ADATA | \
@@ -101,7 +111,7 @@ typedef struct xfs_inode_log_format_64 {
XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
XFS_ILOG_DEV | XFS_ILOG_UUID | \
XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
- XFS_ILOG_ABROOT)
+ XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP)
static inline int xfs_ilog_fbroot(int w)
{
Index: xfs/fs/xfs/xfs_file.c
===================================================================
--- xfs.orig/fs/xfs/xfs_file.c 2012-02-20 12:08:35.513322261 -0800
+++ xfs/fs/xfs/xfs_file.c 2012-02-20 12:11:40.246655094 -0800
@@ -197,8 +197,11 @@ xfs_file_fsync(
* to flush the log up to the latest LSN that touched the inode.
*/
xfs_ilock(ip, XFS_ILOCK_SHARED);
- if (xfs_ipincount(ip))
- lsn = ip->i_itemp->ili_last_lsn;
+ if (xfs_ipincount(ip)) {
+ if (!datasync ||
+ (ip->i_itemp->ili_fields & ~XFS_ILOG_TIMESTAMP))
+ lsn = ip->i_itemp->ili_last_lsn;
+ }
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (lsn)
Index: xfs/fs/xfs/xfs_super.c
===================================================================
--- xfs.orig/fs/xfs/xfs_super.c 2012-02-20 12:08:35.526655594 -0800
+++ xfs/fs/xfs/xfs_super.c 2012-02-20 12:10:27.239988625 -0800
@@ -907,7 +907,7 @@ xfs_fs_dirty_inode(
ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
error = xfs_trans_commit(tp, 0);
if (error)
goto trouble;
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http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 8/8] xfs: add back fdatasync support
2012-02-21 0:38 ` [PATCH 8/8] xfs: add back fdatasync support Christoph Hellwig
@ 2012-02-21 5:23 ` Dave Chinner
2012-03-08 20:04 ` Ben Myers
1 sibling, 0 replies; 14+ messages in thread
From: Dave Chinner @ 2012-02-21 5:23 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: xfs
On Mon, Feb 20, 2012 at 07:38:32PM -0500, Christoph Hellwig wrote:
> Add an in-memory only flag to say we logged timestamps only, and use it to
> check if fdatasync can optimize away the log force.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks good. Couple of minor things below.
Reviewed-by: Dave Chinner <dchinner@redhat.com>
> +/*
> + * The timestamps in the core are dirty, but not nessecarily anything
necessarily
> + * else.
> + *
> + * This is an incore only value store in ilf_fields & co, which must
> + * never make it to disk, unlike the other fields above.
That comment is a bit incoherent. Perhaps:
* this is an incore-only flag stored in ili_fields which, unlike
* the above flags, must never make it to disk in the ilf_fields.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
_______________________________________________
xfs mailing list
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http://oss.sgi.com/mailman/listinfo/xfs
^ permalink raw reply [flat|nested] 14+ messages in thread* Re: [PATCH 8/8] xfs: add back fdatasync support
2012-02-21 0:38 ` [PATCH 8/8] xfs: add back fdatasync support Christoph Hellwig
2012-02-21 5:23 ` Dave Chinner
@ 2012-03-08 20:04 ` Ben Myers
1 sibling, 0 replies; 14+ messages in thread
From: Ben Myers @ 2012-03-08 20:04 UTC (permalink / raw)
To: Christoph Hellwig; +Cc: xfs
On Mon, Feb 20, 2012 at 07:38:32PM -0500, Christoph Hellwig wrote:
> Add an in-memory only flag to say we logged timestamps only, and use it to
> check if fdatasync can optimize away the log force.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks ok. I was a little concerned that xfs_inode_item_format doesn't
know what an XFS_ILOG_TIMESTAMP is, until it dawned that we always log
the inode core.
Reviewed-by: Ben Myers <bpm@sgi.com>
>
> ---
> fs/xfs/xfs_file.c | 7 +++++--
> fs/xfs/xfs_inode_item.c | 3 ++-
> fs/xfs/xfs_inode_item.h | 12 +++++++++++-
> fs/xfs/xfs_super.c | 2 +-
> 4 files changed, 19 insertions(+), 5 deletions(-)
>
> Index: xfs/fs/xfs/xfs_inode_item.c
> ===================================================================
> --- xfs.orig/fs/xfs/xfs_inode_item.c 2012-02-20 12:08:44.379988903 -0800
> +++ xfs/fs/xfs/xfs_inode_item.c 2012-02-20 12:10:27.239988625 -0800
> @@ -439,7 +439,8 @@ out:
> * games in recovery easier, which isn't a big deal as just about any
> * transaction would dirty it anyway.
> */
> - iip->ili_format.ilf_fields = XFS_ILOG_CORE | iip->ili_fields;
> + iip->ili_format.ilf_fields = XFS_ILOG_CORE |
> + (iip->ili_fields & ~XFS_ILOG_TIMESTAMP);
> iip->ili_format.ilf_size = nvecs;
> }
>
> Index: xfs/fs/xfs/xfs_inode_item.h
> ===================================================================
> --- xfs.orig/fs/xfs/xfs_inode_item.h 2012-02-20 12:08:44.383322236 -0800
> +++ xfs/fs/xfs/xfs_inode_item.h 2012-02-20 12:10:27.239988625 -0800
> @@ -86,6 +86,16 @@ typedef struct xfs_inode_log_format_64 {
> #define XFS_ILOG_AEXT 0x080 /* log i_af.if_extents */
> #define XFS_ILOG_ABROOT 0x100 /* log i_af.i_broot */
>
> +
> +/*
> + * The timestamps in the core are dirty, but not nessecarily anything
> + * else.
> + *
> + * This is an incore only value store in ilf_fields & co, which must
> + * never make it to disk, unlike the other fields above.
> + */
> +#define XFS_ILOG_TIMESTAMP 0x4000
> +
> #define XFS_ILOG_NONCORE (XFS_ILOG_DDATA | XFS_ILOG_DEXT | \
> XFS_ILOG_DBROOT | XFS_ILOG_DEV | \
> XFS_ILOG_UUID | XFS_ILOG_ADATA | \
> @@ -101,7 +111,7 @@ typedef struct xfs_inode_log_format_64 {
> XFS_ILOG_DEXT | XFS_ILOG_DBROOT | \
> XFS_ILOG_DEV | XFS_ILOG_UUID | \
> XFS_ILOG_ADATA | XFS_ILOG_AEXT | \
> - XFS_ILOG_ABROOT)
> + XFS_ILOG_ABROOT | XFS_ILOG_TIMESTAMP)
>
> static inline int xfs_ilog_fbroot(int w)
> {
> Index: xfs/fs/xfs/xfs_file.c
> ===================================================================
> --- xfs.orig/fs/xfs/xfs_file.c 2012-02-20 12:08:35.513322261 -0800
> +++ xfs/fs/xfs/xfs_file.c 2012-02-20 12:11:40.246655094 -0800
> @@ -197,8 +197,11 @@ xfs_file_fsync(
> * to flush the log up to the latest LSN that touched the inode.
> */
> xfs_ilock(ip, XFS_ILOCK_SHARED);
> - if (xfs_ipincount(ip))
> - lsn = ip->i_itemp->ili_last_lsn;
> + if (xfs_ipincount(ip)) {
> + if (!datasync ||
> + (ip->i_itemp->ili_fields & ~XFS_ILOG_TIMESTAMP))
> + lsn = ip->i_itemp->ili_last_lsn;
> + }
> xfs_iunlock(ip, XFS_ILOCK_SHARED);
>
> if (lsn)
> Index: xfs/fs/xfs/xfs_super.c
> ===================================================================
> --- xfs.orig/fs/xfs/xfs_super.c 2012-02-20 12:08:35.526655594 -0800
> +++ xfs/fs/xfs/xfs_super.c 2012-02-20 12:10:27.239988625 -0800
> @@ -907,7 +907,7 @@ xfs_fs_dirty_inode(
> ip->i_d.di_mtime.t_nsec = (__int32_t)inode->i_mtime.tv_nsec;
>
> xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
> - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
> + xfs_trans_log_inode(tp, ip, XFS_ILOG_TIMESTAMP);
> error = xfs_trans_commit(tp, 0);
> if (error)
> goto trouble;
>
> _______________________________________________
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> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs
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