From patchwork Wed Mar 13 02:15:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 13590926 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 33328BA37 for ; Wed, 13 Mar 2024 02:15:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710296112; cv=none; b=McKmOl+r4w+oEVZbCpytH8gWUFBq3sCU2yCYclj7gsnK3ONKTLACv+tPQPwiN60AL14uiL4ZT+mtWyHq5tEzXvzE6JtB/1rFh/tolDeVpbx/TaBgYyT9We4gQ7DkxtebZiKLdqKSoN9W/AUoBcSNmV/Bb4k8jwnAh3LTczzY638= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710296112; c=relaxed/simple; bh=I3cRPGUpsKHYuooW8QWXBAj2XrnJSTEHnQEf/c7PT6E=; h=Date:Subject:From:To:Cc:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IIFPyf0Onj+x0SSnlyr9BtqXkj7SPwEx+JRpKRrWjXVblmghxatbQpG8jRyrYA7zaOm6PbGqxPMmZM5URnAWwlcaWOL9mDURGRMZXnU44KEAn815JwuQ7mG14RYp1mRikzzbDtPFl1S8SrtW/LxHVzltw9kEtPui+CO81rmxEis= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Txn5RvJ3; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Txn5RvJ3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 10A5BC433F1; Wed, 13 Mar 2024 02:15:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710296112; bh=I3cRPGUpsKHYuooW8QWXBAj2XrnJSTEHnQEf/c7PT6E=; h=Date:Subject:From:To:Cc:In-Reply-To:References:From; b=Txn5RvJ3AQWLItbaGyFMY3b+0HP59VuB16mMIVWZWL+PT7y6gJ46zGChJ8yhva3Os 1dmRR4rGcPri7UK9dj0h8dHMfu/dY6d5SDSLpZJ2mjMQN04Tn+8m4TIkdt3SDRLFqk Oj/RyMbdcy04dCTUr+Xk+dDAzpHDQkd8ECuaa1LFYMLW+0XT+CafTf/TsLw1l6T4l+ d34aFofl7PcivSFPqu0MMMgHhma+8FBBRMNaR8VS4Gp11dwg7ICc/8IyZuJXrJ9CWI HpnJ6QGAFR9DEgdOXKZG4cCJtd1z1OkZrEjXzTARVGnUFaMy3lneb5wEG+gUJ5nAOf 2LXx1srfSaNZA== Date: Tue, 12 Mar 2024 19:15:11 -0700 Subject: [PATCH 2/8] xfs_repair: slab and bag structs need to track more than 2^32 items From: "Darrick J. Wong" To: djwong@kernel.org, cem@kernel.org Cc: "Darrick J. Wong" , linux-xfs@vger.kernel.org Message-ID: <171029434757.2065824.2289397432209492810.stgit@frogsfrogsfrogs> In-Reply-To: <171029434718.2065824.435823109251685179.stgit@frogsfrogsfrogs> References: <171029434718.2065824.435823109251685179.stgit@frogsfrogsfrogs> User-Agent: StGit/0.19 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Darrick J. Wong Currently, the xfs_slab data structure in xfs_repair is used to stage incore reverse mapping and reference count records to build the ondisk rmapbt and refcountbt during phase 5. On a reflink filesystem, it's possible for there to be more than 2^32 forward mappings in an AG, which means that there could be more than 2^32 rmapbt records too. Widen the size_t fields of xfs_slab to u64 accomodate this. Similarly, the xfs_bag structure holds pointers to xfs_slab objects. This abstraction tracks rmapbt records as we walk through the AG space building refcount records. It's possible for there to be more than 2^32 mappings to a piece of physical space, so we need to side the size_t fields of xfs_bag to u64 as well. In the next patch we'll fix all the users of these two structures; this is merely the preparatory patch. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- repair/slab.c | 36 ++++++++++++++++++------------------ repair/slab.h | 36 +++++++++++++++++++----------------- 2 files changed, 37 insertions(+), 35 deletions(-) diff --git a/repair/slab.c b/repair/slab.c index 165f97efd29d..01bc4d426fea 100644 --- a/repair/slab.c +++ b/repair/slab.c @@ -41,18 +41,18 @@ /* and cannot be larger than 128M */ #define MAX_SLAB_SIZE (128 * 1048576) struct xfs_slab_hdr { - size_t sh_nr; - size_t sh_inuse; /* items in use */ + uint32_t sh_nr; + uint32_t sh_inuse; /* items in use */ struct xfs_slab_hdr *sh_next; /* next slab hdr */ /* objects follow */ }; struct xfs_slab { - size_t s_item_sz; /* item size */ - size_t s_nr_slabs; /* # of slabs */ - size_t s_nr_items; /* # of items */ + uint64_t s_nr_slabs; /* # of slabs */ + uint64_t s_nr_items; /* # of items */ struct xfs_slab_hdr *s_first; /* first slab header */ struct xfs_slab_hdr *s_last; /* last sh_next pointer */ + size_t s_item_sz; /* item size */ }; /* @@ -64,13 +64,13 @@ struct xfs_slab { */ struct xfs_slab_hdr_cursor { struct xfs_slab_hdr *hdr; /* a slab header */ - size_t loc; /* where we are in the slab */ + uint32_t loc; /* where we are in the slab */ }; typedef int (*xfs_slab_compare_fn)(const void *, const void *); struct xfs_slab_cursor { - size_t nr; /* # of per-slab cursors */ + uint64_t nr; /* # of per-slab cursors */ struct xfs_slab *slab; /* pointer to the slab */ struct xfs_slab_hdr_cursor *last_hcur; /* last header we took from */ xfs_slab_compare_fn compare_fn; /* compare items */ @@ -83,8 +83,8 @@ struct xfs_slab_cursor { */ #define MIN_BAG_SIZE 4096 struct xfs_bag { - size_t bg_nr; /* number of pointers */ - size_t bg_inuse; /* number of slots in use */ + uint64_t bg_nr; /* number of pointers */ + uint64_t bg_inuse; /* number of slots in use */ void **bg_ptrs; /* pointers */ }; #define BAG_END(bag) (&(bag)->bg_ptrs[(bag)->bg_nr]) @@ -137,7 +137,7 @@ static void * slab_ptr( struct xfs_slab *slab, struct xfs_slab_hdr *hdr, - size_t idx) + uint32_t idx) { char *p; @@ -155,12 +155,12 @@ slab_add( struct xfs_slab *slab, void *item) { - struct xfs_slab_hdr *hdr; + struct xfs_slab_hdr *hdr; void *p; hdr = slab->s_last; if (!hdr || hdr->sh_inuse == hdr->sh_nr) { - size_t n; + uint32_t n; n = (hdr ? hdr->sh_nr * 2 : MIN_SLAB_NR); if (n * slab->s_item_sz > MAX_SLAB_SIZE) @@ -308,7 +308,7 @@ peek_slab_cursor( struct xfs_slab_hdr_cursor *hcur; void *p = NULL; void *q; - size_t i; + uint64_t i; cur->last_hcur = NULL; @@ -370,7 +370,7 @@ pop_slab_cursor( /* * Return the number of items in the slab. */ -size_t +uint64_t slab_count( struct xfs_slab *slab) { @@ -429,7 +429,7 @@ bag_add( p = &bag->bg_ptrs[bag->bg_inuse]; if (p == BAG_END(bag)) { /* No free space, alloc more pointers */ - size_t nr; + uint64_t nr; nr = bag->bg_nr * 2; x = realloc(bag->bg_ptrs, nr * sizeof(void *)); @@ -450,7 +450,7 @@ bag_add( int bag_remove( struct xfs_bag *bag, - size_t nr) + uint64_t nr) { ASSERT(nr < bag->bg_inuse); memmove(&bag->bg_ptrs[nr], &bag->bg_ptrs[nr + 1], @@ -462,7 +462,7 @@ bag_remove( /* * Return the number of items in a bag. */ -size_t +uint64_t bag_count( struct xfs_bag *bag) { @@ -475,7 +475,7 @@ bag_count( void * bag_item( struct xfs_bag *bag, - size_t nr) + uint64_t nr) { if (nr >= bag->bg_inuse) return NULL; diff --git a/repair/slab.h b/repair/slab.h index aab46ecf1f08..077b45822149 100644 --- a/repair/slab.h +++ b/repair/slab.h @@ -9,29 +9,31 @@ struct xfs_slab; struct xfs_slab_cursor; -extern int init_slab(struct xfs_slab **, size_t); -extern void free_slab(struct xfs_slab **); +int init_slab(struct xfs_slab **slabp, size_t item_sz); +void free_slab(struct xfs_slab **slabp); -extern int slab_add(struct xfs_slab *, void *); -extern void qsort_slab(struct xfs_slab *, int (*)(const void *, const void *)); -extern size_t slab_count(struct xfs_slab *); +int slab_add(struct xfs_slab *slab, void *item); +void qsort_slab(struct xfs_slab *slab, + int (*compare)(const void *, const void *)); +uint64_t slab_count(struct xfs_slab *slab); -extern int init_slab_cursor(struct xfs_slab *, - int (*)(const void *, const void *), struct xfs_slab_cursor **); -extern void free_slab_cursor(struct xfs_slab_cursor **); +int init_slab_cursor(struct xfs_slab *slab, + int (*compare)(const void *, const void *), + struct xfs_slab_cursor **curp); +void free_slab_cursor(struct xfs_slab_cursor **curp); -extern void *peek_slab_cursor(struct xfs_slab_cursor *); -extern void advance_slab_cursor(struct xfs_slab_cursor *); -extern void *pop_slab_cursor(struct xfs_slab_cursor *); +void *peek_slab_cursor(struct xfs_slab_cursor *cur); +void advance_slab_cursor(struct xfs_slab_cursor *cur); +void *pop_slab_cursor(struct xfs_slab_cursor *cur); struct xfs_bag; -extern int init_bag(struct xfs_bag **); -extern void free_bag(struct xfs_bag **); -extern int bag_add(struct xfs_bag *, void *); -extern int bag_remove(struct xfs_bag *, size_t); -extern size_t bag_count(struct xfs_bag *); -extern void *bag_item(struct xfs_bag *, size_t); +int init_bag(struct xfs_bag **bagp); +void free_bag(struct xfs_bag **bagp); +int bag_add(struct xfs_bag *bag, void *item); +int bag_remove(struct xfs_bag *bag, uint64_t idx); +uint64_t bag_count(struct xfs_bag *bag); +void *bag_item(struct xfs_bag *bag, uint64_t idx); #define foreach_bag_ptr(bag, idx, ptr) \ for ((idx) = 0, (ptr) = bag_item((bag), (idx)); \