From: "Darrick J. Wong" <djwong@kernel.org>
To: djwong@kernel.org
Cc: linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-api@vger.kernel.org
Subject: [PATCH 16/21] xfs: condense extended attributes after an atomic swap
Date: Fri, 30 Dec 2022 14:13:57 -0800 [thread overview]
Message-ID: <167243843757.699466.12904802285567328629.stgit@magnolia> (raw)
In-Reply-To: <167243843494.699466.5163281976943635014.stgit@magnolia>
From: Darrick J. Wong <djwong@kernel.org>
Add a new swapext flag that enables us to perform post-swap processing
on file2 once we're done swapping the extent maps. If we were swapping
the extended attributes, we want to be able to convert file2's attr fork
from block to inline format.
This isn't used anywhere right now, but we need to have the basic ondisk
flags in place so that a future online xattr repair feature can create
salvaged attrs in a temporary file and swap the attr forks when ready.
If one file is in extents format and the other is inline, we will have to
promote both to extents format to perform the swap. After the swap, we
can try to condense the fixed file's attr fork back down to inline
format if possible.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/libxfs/xfs_log_format.h | 9 +++++--
fs/xfs/libxfs/xfs_swapext.c | 51 +++++++++++++++++++++++++++++++++++++++-
fs/xfs/libxfs/xfs_swapext.h | 9 +++++--
3 files changed, 64 insertions(+), 5 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h
index 65a84fdefe56..378201a70028 100644
--- a/fs/xfs/libxfs/xfs_log_format.h
+++ b/fs/xfs/libxfs/xfs_log_format.h
@@ -906,18 +906,23 @@ struct xfs_swap_extent {
/* Clear the reflink flag from inode2 after the operation. */
#define XFS_SWAP_EXT_CLEAR_INO2_REFLINK (1ULL << 4)
+/* Try to convert inode2 from block to short format at the end, if possible. */
+#define XFS_SWAP_EXT_CVT_INO2_SF (1ULL << 5)
+
#define XFS_SWAP_EXT_FLAGS (XFS_SWAP_EXT_ATTR_FORK | \
XFS_SWAP_EXT_SET_SIZES | \
XFS_SWAP_EXT_SKIP_INO1_HOLES | \
XFS_SWAP_EXT_CLEAR_INO1_REFLINK | \
- XFS_SWAP_EXT_CLEAR_INO2_REFLINK)
+ XFS_SWAP_EXT_CLEAR_INO2_REFLINK | \
+ XFS_SWAP_EXT_CVT_INO2_SF)
#define XFS_SWAP_EXT_STRINGS \
{ XFS_SWAP_EXT_ATTR_FORK, "ATTRFORK" }, \
{ XFS_SWAP_EXT_SET_SIZES, "SETSIZES" }, \
{ XFS_SWAP_EXT_SKIP_INO1_HOLES, "SKIP_INO1_HOLES" }, \
{ XFS_SWAP_EXT_CLEAR_INO1_REFLINK, "CLEAR_INO1_REFLINK" }, \
- { XFS_SWAP_EXT_CLEAR_INO2_REFLINK, "CLEAR_INO2_REFLINK" }
+ { XFS_SWAP_EXT_CLEAR_INO2_REFLINK, "CLEAR_INO2_REFLINK" }, \
+ { XFS_SWAP_EXT_CVT_INO2_SF, "CVT_INO2_SF" }
/* This is the structure used to lay out an sxi log item in the log. */
struct xfs_sxi_log_format {
diff --git a/fs/xfs/libxfs/xfs_swapext.c b/fs/xfs/libxfs/xfs_swapext.c
index 227a08ac5d4b..6b5223e73692 100644
--- a/fs/xfs/libxfs/xfs_swapext.c
+++ b/fs/xfs/libxfs/xfs_swapext.c
@@ -23,6 +23,10 @@
#include "xfs_error.h"
#include "xfs_errortag.h"
#include "xfs_health.h"
+#include "xfs_da_format.h"
+#include "xfs_da_btree.h"
+#include "xfs_attr_leaf.h"
+#include "xfs_attr.h"
struct kmem_cache *xfs_swapext_intent_cache;
@@ -121,7 +125,8 @@ static inline bool
sxi_has_postop_work(const struct xfs_swapext_intent *sxi)
{
return sxi->sxi_flags & (XFS_SWAP_EXT_CLEAR_INO1_REFLINK |
- XFS_SWAP_EXT_CLEAR_INO2_REFLINK);
+ XFS_SWAP_EXT_CLEAR_INO2_REFLINK |
+ XFS_SWAP_EXT_CVT_INO2_SF);
}
static inline void
@@ -350,6 +355,36 @@ xfs_swapext_exchange_mappings(
sxi_advance(sxi, irec1);
}
+/* Convert inode2's leaf attr fork back to shortform, if possible.. */
+STATIC int
+xfs_swapext_attr_to_sf(
+ struct xfs_trans *tp,
+ struct xfs_swapext_intent *sxi)
+{
+ struct xfs_da_args args = {
+ .dp = sxi->sxi_ip2,
+ .geo = tp->t_mountp->m_attr_geo,
+ .whichfork = XFS_ATTR_FORK,
+ .trans = tp,
+ };
+ struct xfs_buf *bp;
+ int forkoff;
+ int error;
+
+ if (!xfs_attr_is_leaf(sxi->sxi_ip2))
+ return 0;
+
+ error = xfs_attr3_leaf_read(tp, sxi->sxi_ip2, 0, &bp);
+ if (error)
+ return error;
+
+ forkoff = xfs_attr_shortform_allfit(bp, sxi->sxi_ip2);
+ if (forkoff == 0)
+ return 0;
+
+ return xfs_attr3_leaf_to_shortform(bp, &args, forkoff);
+}
+
static inline void
xfs_swapext_clear_reflink(
struct xfs_trans *tp,
@@ -367,6 +402,16 @@ xfs_swapext_do_postop_work(
struct xfs_trans *tp,
struct xfs_swapext_intent *sxi)
{
+ if (sxi->sxi_flags & XFS_SWAP_EXT_CVT_INO2_SF) {
+ int error = 0;
+
+ if (sxi->sxi_flags & XFS_SWAP_EXT_ATTR_FORK)
+ error = xfs_swapext_attr_to_sf(tp, sxi);
+ sxi->sxi_flags &= ~XFS_SWAP_EXT_CVT_INO2_SF;
+ if (error)
+ return error;
+ }
+
if (sxi->sxi_flags & XFS_SWAP_EXT_CLEAR_INO1_REFLINK) {
xfs_swapext_clear_reflink(tp, sxi->sxi_ip1);
sxi->sxi_flags &= ~XFS_SWAP_EXT_CLEAR_INO1_REFLINK;
@@ -794,6 +839,8 @@ xfs_swapext_init_intent(
if (req->req_flags & XFS_SWAP_REQ_SKIP_INO1_HOLES)
sxi->sxi_flags |= XFS_SWAP_EXT_SKIP_INO1_HOLES;
+ if (req->req_flags & XFS_SWAP_REQ_CVT_INO2_SF)
+ sxi->sxi_flags |= XFS_SWAP_EXT_CVT_INO2_SF;
if (req->req_flags & XFS_SWAP_REQ_LOGGED)
sxi->sxi_op_flags |= XFS_SWAP_EXT_OP_LOGGED;
@@ -1013,6 +1060,8 @@ xfs_swapext(
ASSERT(!(req->req_flags & ~XFS_SWAP_REQ_FLAGS));
if (req->req_flags & XFS_SWAP_REQ_SET_SIZES)
ASSERT(req->whichfork == XFS_DATA_FORK);
+ if (req->req_flags & XFS_SWAP_REQ_CVT_INO2_SF)
+ ASSERT(req->whichfork == XFS_ATTR_FORK);
if (req->blockcount == 0)
return;
diff --git a/fs/xfs/libxfs/xfs_swapext.h b/fs/xfs/libxfs/xfs_swapext.h
index 1987897ddc25..6b610fea150a 100644
--- a/fs/xfs/libxfs/xfs_swapext.h
+++ b/fs/xfs/libxfs/xfs_swapext.h
@@ -126,16 +126,21 @@ struct xfs_swapext_req {
/* Files need to be upgraded to have large extent counts. */
#define XFS_SWAP_REQ_NREXT64 (1U << 3)
+/* Try to convert inode2's fork to local format, if possible. */
+#define XFS_SWAP_REQ_CVT_INO2_SF (1U << 4)
+
#define XFS_SWAP_REQ_FLAGS (XFS_SWAP_REQ_LOGGED | \
XFS_SWAP_REQ_SET_SIZES | \
XFS_SWAP_REQ_SKIP_INO1_HOLES | \
- XFS_SWAP_REQ_NREXT64)
+ XFS_SWAP_REQ_NREXT64 | \
+ XFS_SWAP_REQ_CVT_INO2_SF)
#define XFS_SWAP_REQ_STRINGS \
{ XFS_SWAP_REQ_LOGGED, "LOGGED" }, \
{ XFS_SWAP_REQ_SET_SIZES, "SETSIZES" }, \
{ XFS_SWAP_REQ_SKIP_INO1_HOLES, "SKIP_INO1_HOLES" }, \
- { XFS_SWAP_REQ_NREXT64, "NREXT64" }
+ { XFS_SWAP_REQ_NREXT64, "NREXT64" }, \
+ { XFS_SWAP_REQ_CVT_INO2_SF, "CVT_INO2_SF" }
unsigned int xfs_swapext_reflink_prep(const struct xfs_swapext_req *req);
void xfs_swapext_reflink_finish(struct xfs_trans *tp,
next prev parent reply other threads:[~2022-12-30 23:54 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Y69Unb7KRM5awJoV@magnolia>
2022-12-30 22:13 ` [PATCHSET v24.0 00/21] xfs: atomic file updates Darrick J. Wong
2022-12-30 22:13 ` [PATCH 01/21] vfs: introduce new file range exchange ioctl Darrick J. Wong
2022-12-30 22:13 ` [PATCH 05/21] xfs: create a log incompat flag for atomic extent swapping Darrick J. Wong
2022-12-30 22:13 ` [PATCH 02/21] xfs: create a new helper to return a file's allocation unit Darrick J. Wong
2022-12-30 22:13 ` [PATCH 03/21] xfs: refactor non-power-of-two alignment checks Darrick J. Wong
2022-12-30 22:13 ` [PATCH 04/21] xfs: parameterize all the incompat log feature helpers Darrick J. Wong
2022-12-30 22:13 ` [PATCH 11/21] xfs: port xfs_swap_extents_rmap to our new code Darrick J. Wong
2022-12-30 22:13 ` [PATCH 10/21] xfs: add error injection to test swapext recovery Darrick J. Wong
2022-12-30 22:13 ` [PATCH 08/21] xfs: enable xlog users to toggle atomic extent swapping Darrick J. Wong
2022-12-30 22:13 ` [PATCH 06/21] xfs: introduce a swap-extent log intent item Darrick J. Wong
2022-12-30 22:13 ` [PATCH 07/21] xfs: create deferred log items for extent swapping Darrick J. Wong
2022-12-30 22:13 ` [PATCH 09/21] xfs: add a ->xchg_file_range handler Darrick J. Wong
2022-12-30 22:13 ` [PATCH 12/21] xfs: consolidate all of the xfs_swap_extent_forks code Darrick J. Wong
2022-12-30 22:13 ` [PATCH 18/21] xfs: condense symbolic links after an atomic swap Darrick J. Wong
2022-12-30 22:13 ` [PATCH 14/21] xfs: allow xfs_swap_range to use older extent swap algorithms Darrick J. Wong
2022-12-30 22:13 ` [PATCH 17/21] xfs: condense directories after an atomic swap Darrick J. Wong
2022-12-30 22:13 ` Darrick J. Wong [this message]
2022-12-30 22:13 ` [PATCH 15/21] xfs: remove old swap extents implementation Darrick J. Wong
2022-12-30 22:13 ` [PATCH 13/21] xfs: port xfs_swap_extent_forks to use xfs_swapext_req Darrick J. Wong
2022-12-30 22:13 ` [PATCH 21/21] xfs: enable atomic swapext feature Darrick J. Wong
2022-12-30 22:13 ` [PATCH 20/21] xfs: support non-power-of-two rtextsize with exchange-range Darrick J. Wong
2022-12-30 22:13 ` [PATCH 19/21] xfs: make atomic extent swapping support realtime files Darrick J. Wong
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