From: cem@kernel.org
To: linux-xfs@vger.kernel.org
Cc: djwong@kernel.org, hch@lst.de
Subject: [PATCH 23/67] xfs: extract xfs_da_buf_copy() helper function
Date: Mon, 22 Apr 2024 18:25:45 +0200 [thread overview]
Message-ID: <20240422163832.858420-25-cem@kernel.org> (raw)
In-Reply-To: <20240422163832.858420-2-cem@kernel.org>
From: Zhang Tianci <zhangtianci.1997@bytedance.com>
Source kernel commit: fd45ddb9dd606b3eaddf26e13f64340636955986
This patch does not modify logic.
xfs_da_buf_copy() will copy one block from src xfs_buf to
dst xfs_buf, and update the block metadata in dst directly.
Signed-off-by: Zhang Tianci <zhangtianci.1997@bytedance.com>
Suggested-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
---
libxfs/xfs_attr_leaf.c | 12 +++----
libxfs/xfs_da_btree.c | 74 +++++++++++++++++-------------------------
libxfs/xfs_da_btree.h | 2 ++
3 files changed, 36 insertions(+), 52 deletions(-)
diff --git a/libxfs/xfs_attr_leaf.c b/libxfs/xfs_attr_leaf.c
index ed81471ce..baa168318 100644
--- a/libxfs/xfs_attr_leaf.c
+++ b/libxfs/xfs_attr_leaf.c
@@ -1241,14 +1241,10 @@ xfs_attr3_leaf_to_node(
if (error)
goto out;
- /* copy leaf to new buffer, update identifiers */
- xfs_trans_buf_set_type(args->trans, bp2, XFS_BLFT_ATTR_LEAF_BUF);
- bp2->b_ops = bp1->b_ops;
- memcpy(bp2->b_addr, bp1->b_addr, args->geo->blksize);
- if (xfs_has_crc(mp)) {
- struct xfs_da3_blkinfo *hdr3 = bp2->b_addr;
- hdr3->blkno = cpu_to_be64(xfs_buf_daddr(bp2));
- }
+ /*
+ * Copy leaf to new buffer and log it.
+ */
+ xfs_da_buf_copy(bp2, bp1, args->geo->blksize);
xfs_trans_log_buf(args->trans, bp2, 0, args->geo->blksize - 1);
/*
diff --git a/libxfs/xfs_da_btree.c b/libxfs/xfs_da_btree.c
index 3903486d1..0779bb624 100644
--- a/libxfs/xfs_da_btree.c
+++ b/libxfs/xfs_da_btree.c
@@ -417,6 +417,25 @@ xfs_da3_node_read_mapped(
return xfs_da3_node_set_type(tp, *bpp);
}
+/*
+ * Copy src directory/attr leaf/node buffer to the dst.
+ * For v5 file systems make sure the right blkno is stamped in.
+ */
+void
+xfs_da_buf_copy(
+ struct xfs_buf *dst,
+ struct xfs_buf *src,
+ size_t size)
+{
+ struct xfs_da3_blkinfo *da3 = dst->b_addr;
+
+ memcpy(dst->b_addr, src->b_addr, size);
+ dst->b_ops = src->b_ops;
+ xfs_trans_buf_copy_type(dst, src);
+ if (xfs_has_crc(dst->b_mount))
+ da3->blkno = cpu_to_be64(xfs_buf_daddr(dst));
+}
+
/*========================================================================
* Routines used for growing the Btree.
*========================================================================*/
@@ -686,12 +705,6 @@ xfs_da3_root_split(
btree = icnodehdr.btree;
size = (int)((char *)&btree[icnodehdr.count] - (char *)oldroot);
level = icnodehdr.level;
-
- /*
- * we are about to copy oldroot to bp, so set up the type
- * of bp while we know exactly what it will be.
- */
- xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DA_NODE_BUF);
} else {
struct xfs_dir3_icleaf_hdr leafhdr;
@@ -703,31 +716,17 @@ xfs_da3_root_split(
size = (int)((char *)&leafhdr.ents[leafhdr.count] -
(char *)leaf);
level = 0;
-
- /*
- * we are about to copy oldroot to bp, so set up the type
- * of bp while we know exactly what it will be.
- */
- xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAFN_BUF);
}
/*
- * we can copy most of the information in the node from one block to
- * another, but for CRC enabled headers we have to make sure that the
- * block specific identifiers are kept intact. We update the buffer
- * directly for this.
+ * Copy old root to new buffer and log it.
*/
- memcpy(node, oldroot, size);
- if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC) ||
- oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) {
- struct xfs_da3_intnode *node3 = (struct xfs_da3_intnode *)node;
-
- node3->hdr.info.blkno = cpu_to_be64(xfs_buf_daddr(bp));
- }
+ xfs_da_buf_copy(bp, blk1->bp, size);
xfs_trans_log_buf(tp, bp, 0, size - 1);
- bp->b_ops = blk1->bp->b_ops;
- xfs_trans_buf_copy_type(bp, blk1->bp);
+ /*
+ * Update blk1 to point to new buffer.
+ */
blk1->bp = bp;
blk1->blkno = blkno;
@@ -1216,21 +1215,14 @@ xfs_da3_root_join(
xfs_da_blkinfo_onlychild_validate(bp->b_addr, oldroothdr.level);
/*
- * This could be copying a leaf back into the root block in the case of
- * there only being a single leaf block left in the tree. Hence we have
- * to update the b_ops pointer as well to match the buffer type change
- * that could occur. For dir3 blocks we also need to update the block
- * number in the buffer header.
+ * Copy child to root buffer and log it.
*/
- memcpy(root_blk->bp->b_addr, bp->b_addr, args->geo->blksize);
- root_blk->bp->b_ops = bp->b_ops;
- xfs_trans_buf_copy_type(root_blk->bp, bp);
- if (oldroothdr.magic == XFS_DA3_NODE_MAGIC) {
- struct xfs_da3_blkinfo *da3 = root_blk->bp->b_addr;
- da3->blkno = cpu_to_be64(xfs_buf_daddr(root_blk->bp));
- }
+ xfs_da_buf_copy(root_blk->bp, bp, args->geo->blksize);
xfs_trans_log_buf(args->trans, root_blk->bp, 0,
args->geo->blksize - 1);
+ /*
+ * Now we can drop the child buffer.
+ */
error = xfs_da_shrink_inode(args, child, bp);
return error;
}
@@ -2312,14 +2304,8 @@ xfs_da3_swap_lastblock(
return error;
/*
* Copy the last block into the dead buffer and log it.
- * On CRC-enabled file systems, also update the stamped in blkno.
*/
- memcpy(dead_buf->b_addr, last_buf->b_addr, args->geo->blksize);
- if (xfs_has_crc(mp)) {
- struct xfs_da3_blkinfo *da3 = dead_buf->b_addr;
-
- da3->blkno = cpu_to_be64(xfs_buf_daddr(dead_buf));
- }
+ xfs_da_buf_copy(dead_buf, last_buf, args->geo->blksize);
xfs_trans_log_buf(tp, dead_buf, 0, args->geo->blksize - 1);
dead_info = dead_buf->b_addr;
diff --git a/libxfs/xfs_da_btree.h b/libxfs/xfs_da_btree.h
index ffa3df5b2..706baf36e 100644
--- a/libxfs/xfs_da_btree.h
+++ b/libxfs/xfs_da_btree.h
@@ -219,6 +219,8 @@ int xfs_da_reada_buf(struct xfs_inode *dp, xfs_dablk_t bno,
const struct xfs_buf_ops *ops);
int xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
struct xfs_buf *dead_buf);
+void xfs_da_buf_copy(struct xfs_buf *dst, struct xfs_buf *src,
+ size_t size);
uint xfs_da_hashname(const uint8_t *name_string, int name_length);
enum xfs_dacmp xfs_da_compname(struct xfs_da_args *args,
--
2.44.0
next prev parent reply other threads:[~2024-04-22 16:39 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 16:25 [PATCH 00/67] libxfs: Sync to Linux 6.8 cem
2024-04-22 16:25 ` [PATCH 01/67] xfs: use xfs_defer_pending objects to recover intent items cem
2024-04-22 16:25 ` [PATCH 02/67] xfs: recreate work items when recovering " cem
2024-04-22 16:25 ` [PATCH 03/67] xfs: use xfs_defer_finish_one to finish recovered work items cem
2024-04-22 16:25 ` [PATCH 04/67] xfs: move ->iop_recover to xfs_defer_op_type cem
2024-04-22 16:25 ` [PATCH 05/67] xfs: hoist intent done flag setting to ->finish_item callsite cem
2024-04-22 16:25 ` [PATCH 06/67] xfs: hoist ->create_intent boilerplate to its callsite cem
2024-04-22 16:25 ` [PATCH 07/67] xfs: use xfs_defer_create_done for the relogging operation cem
2024-04-22 16:25 ` [PATCH 08/67] xfs: clean out XFS_LI_DIRTY setting boilerplate from ->iop_relog cem
2024-04-22 16:25 ` [PATCH 09/67] xfs: hoist xfs_trans_add_item calls to defer ops functions cem
2024-04-22 16:25 ` [PATCH 10/67] xfs: move ->iop_relog to struct xfs_defer_op_type cem
2024-04-22 16:25 ` [PATCH 11/67] xfs: make rextslog computation consistent with mkfs cem
2024-04-22 16:25 ` [PATCH 12/67] xfs: fix 32-bit truncation in xfs_compute_rextslog cem
2024-04-22 16:25 ` [PATCH 13/67] xfs: don't allow overly small or large realtime volumes cem
2024-04-22 16:25 ` [PATCH 14/67] xfs: elide ->create_done calls for unlogged deferred work cem
2024-04-22 16:25 ` [PATCH 15/67] xfs: don't append work items to logged xfs_defer_pending objects cem
2024-04-22 16:25 ` [PATCH 16/67] xfs: allow pausing of pending deferred work items cem
2024-04-22 16:25 ` [PATCH 17/67] xfs: remove __xfs_free_extent_later cem
2024-04-22 16:25 ` [PATCH 18/67] xfs: automatic freeing of freshly allocated unwritten space cem
2024-04-22 16:25 ` [PATCH 19/67] xfs: remove unused fields from struct xbtree_ifakeroot cem
2024-04-22 16:25 ` [PATCH 20/67] xfs: force small EFIs for reaping btree extents cem
2024-04-22 16:25 ` [PATCH 21/67] xfs: ensure logflagsp is initialized in xfs_bmap_del_extent_real cem
2024-04-22 16:25 ` [PATCH 22/67] xfs: update dir3 leaf block metadata after swap cem
2024-04-22 16:25 ` cem [this message]
2024-04-22 16:25 ` [PATCH 24/67] xfs: move xfs_ondisk.h to libxfs/ cem
2024-04-22 16:25 ` [PATCH 25/67] xfs: consolidate the xfs_attr_defer_* helpers cem
2024-04-22 16:25 ` [PATCH 26/67] xfs: store an ops pointer in struct xfs_defer_pending cem
2024-04-22 16:25 ` [PATCH 27/67] xfs: pass the defer ops instead of type to xfs_defer_start_recovery cem
2024-04-22 16:25 ` [PATCH 28/67] xfs: pass the defer ops directly to xfs_defer_add cem
2024-04-22 16:25 ` [PATCH 29/67] xfs: force all buffers to be written during btree bulk load cem
2024-04-22 16:25 ` [PATCH 30/67] xfs: set XBF_DONE on newly formatted btree block that are ready for writing cem
2024-04-22 16:25 ` [PATCH 31/67] xfs: read leaf blocks when computing keys for bulkloading into node blocks cem
2024-04-22 16:25 ` [PATCH 32/67] xfs: move btree bulkload record initialization to ->get_record implementations cem
2024-04-22 16:25 ` [PATCH 33/67] xfs: constrain dirty buffers while formatting a staged btree cem
2024-04-22 16:25 ` [PATCH 34/67] xfs: repair free space btrees cem
2024-04-22 16:25 ` [PATCH 35/67] xfs: repair inode btrees cem
2024-04-22 16:25 ` [PATCH 36/67] xfs: repair refcount btrees cem
2024-04-22 16:25 ` [PATCH 37/67] xfs: dont cast to char * for XFS_DFORK_*PTR macros cem
2024-04-22 16:26 ` [PATCH 38/67] xfs: set inode sick state flags when we zap either ondisk fork cem
2024-04-22 16:26 ` [PATCH 39/67] xfs: zap broken inode forks cem
2024-04-22 16:26 ` [PATCH 40/67] xfs: repair inode fork block mapping data structures cem
2024-04-22 16:26 ` [PATCH 41/67] xfs: create a ranged query function for refcount btrees cem
2024-04-22 16:26 ` [PATCH 42/67] xfs: create a new inode fork block unmap helper cem
2024-04-22 16:26 ` [PATCH 43/67] xfs: improve dquot iteration for scrub cem
2024-04-22 16:26 ` [PATCH 44/67] xfs: add lock protection when remove perag from radix tree cem
2024-04-22 16:26 ` [PATCH 45/67] xfs: fix perag leak when growfs fails cem
2024-04-22 16:26 ` [PATCH 46/67] xfs: remove the xfs_alloc_arg argument to xfs_bmap_btalloc_accounting cem
2024-04-22 16:26 ` [PATCH 47/67] xfs: also use xfs_bmap_btalloc_accounting for RT allocations cem
2024-04-22 16:26 ` [PATCH 48/67] xfs: return -ENOSPC from xfs_rtallocate_* cem
2024-04-22 16:26 ` [PATCH 49/67] xfs: indicate if xfs_bmap_adjacent changed ap->blkno cem
2024-04-22 16:26 ` [PATCH 50/67] xfs: move xfs_rtget_summary to xfs_rtbitmap.c cem
2024-04-22 16:26 ` [PATCH 51/67] xfs: split xfs_rtmodify_summary_int cem
2024-04-22 16:26 ` [PATCH 52/67] xfs: remove rt-wrappers from xfs_format.h cem
2024-04-22 16:26 ` [PATCH 53/67] xfs: remove XFS_RTMIN/XFS_RTMAX cem
2024-04-22 16:26 ` [PATCH 54/67] xfs: make if_data a void pointer cem
2024-04-22 16:26 ` [PATCH 55/67] xfs: return if_data from xfs_idata_realloc cem
2024-04-22 16:26 ` [PATCH 56/67] xfs: move the xfs_attr_sf_lookup tracepoint cem
2024-04-22 16:26 ` [PATCH 57/67] xfs: simplify xfs_attr_sf_findname cem
2024-04-22 16:26 ` [PATCH 58/67] xfs: remove xfs_attr_shortform_lookup cem
2024-04-22 16:26 ` [PATCH 59/67] xfs: use xfs_attr_sf_findname in xfs_attr_shortform_getvalue cem
2024-04-22 16:26 ` [PATCH 60/67] xfs: remove struct xfs_attr_shortform cem
2024-04-22 16:26 ` [PATCH 61/67] xfs: remove xfs_attr_sf_hdr_t cem
2024-04-22 16:26 ` [PATCH 62/67] xfs: turn the XFS_DA_OP_REPLACE checks in xfs_attr_shortform_addname into asserts cem
2024-04-22 16:26 ` [PATCH 63/67] xfs: fix a use after free in xfs_defer_finish_recovery cem
2024-04-22 16:26 ` [PATCH 64/67] xfs: use the op name in trace_xlog_intent_recovery_failed cem
2024-04-22 16:26 ` [PATCH 65/67] xfs: fix backwards logic in xfs_bmap_alloc_account cem
2024-04-22 16:26 ` [PATCH 66/67] xfs: reset XFS_ATTR_INCOMPLETE filter on node removal cem
2024-04-22 16:26 ` [PATCH 67/67] xfs: remove conditional building of rt geometry validator functions cem
-- strict thread matches above, loose matches on Subject: below --
2024-04-17 21:16 [PATCHSET 04/11] libxfs: sync with 6.8 Darrick J. Wong
2024-04-17 21:27 ` [PATCH 23/67] xfs: extract xfs_da_buf_copy() helper function Darrick J. Wong
2024-03-26 2:55 [PATCHSET 02/18] libxfs: sync with 6.8 Darrick J. Wong
2024-03-26 3:08 ` [PATCH 23/67] xfs: extract xfs_da_buf_copy() helper function Darrick J. Wong
2024-03-13 1:47 [PATCHSET 02/10] libxfs: sync with 6.8 Darrick J. Wong
2024-03-13 1:59 ` [PATCH 23/67] xfs: extract xfs_da_buf_copy() helper function Darrick J. Wong
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