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Date: Tue, 9 Mar 2021 09:42:12 -0800
From: "Darrick J. Wong" <djwong@...nel.org>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Dave Chinner <david@...morbit.com>, linux-xfs@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] xfs: Replace one-element arrays with
flexible-array members
On Tue, Mar 02, 2021 at 09:05:58AM -0600, Gustavo A. R. Silva wrote:
> There is a regular need in the kernel to provide a way to declare having
> a dynamically sized set of trailing elements in a structure. Kernel code
> should always use “flexible array members”[1] for these cases. The older
> style of one-element or zero-length arrays should no longer be used[2].
>
> Refactor the code according to the use of flexible-array members in
> multiple structures, instead of one-element arrays. Also, make use of
> the new struct_size() helper to properly calculate the size of multiple
> structures that contain flexible-array members.
>
> Below are the results of running xfstests for groups shutdown and log
> with the following configuration in local.config:
>
> export TEST_DEV=/dev/sda3
> export TEST_DIR=/mnt/test
> export SCRATCH_DEV=/dev/sda4
> export SCRATCH_MNT=/mnt/scratch
>
> The size for both partitions /dev/sda3 and /dev/sda4 is 25GB.
>
> These are the results of running ./check -g shutdown and ./check -g
> log, respectively, on 5.11.0-next-20210301 kernel _without_ this patch
> applied:
>
> gustavo@...fy:~/git/xfstests$ time sudo ./check -g shutdown 2>&1 | tee xfs-shutdown-no-patch.out
> FSTYP -- xfs (debug)
> PLATFORM -- Linux/x86_64 beefy 5.11.0-next-20210301 #4 SMP Mon Mar 1 05:42:06 CST 2021
> MKFS_OPTIONS -- -f -bsize=4096 /dev/sda4
> MOUNT_OPTIONS -- /dev/sda4 /mnt/scratch
>
> generic/042 2s ... 2s
> generic/043 13s ... 13s
> generic/044 14s ... 14s
> generic/045 18s ... 18s
> generic/046 14s ... 14s
> generic/047 20s ... 22s
> generic/048 51s ... 50s
> generic/049 9s ... 8s
> generic/050 2s ... 1s
> generic/051 76s ... 75s
> generic/052 1s ... 2s
> generic/054 31s ... 30s
> generic/055 16s ... 21s
> generic/388 89s ... 75s
> generic/392 5s ... 5s
> generic/417 11s ... 11s
> generic/461 21s ... 22s
> generic/468 3s ... 3s
> generic/474 1s ... 1s
> generic/475 86s ... 93s
> generic/505 2s ... 2s
> generic/506 2s ... 2s
> generic/507 [not run] file system doesn't support chattr +AsSu
> generic/508 1s ... 1s
> generic/530 10s ... 10s
> generic/536 3s ... 2s
> generic/599 1s ... 1s
> generic/622 23s ... 24s
> xfs/051 18s ... 18s
> xfs/079 15s ... 14s
> xfs/121 6s ... 16s
> xfs/181 12s ... 15s
> xfs/212 1s ... 3s
> Ran: generic/042 generic/043 generic/044 generic/045 generic/046 generic/047 generic/048 generic/049 generic/050 generic/051 generic/052 generic/054 generic/055 generic/388 generic/392 generic/417 generic/461 generic/468 generic/474 generic/475 generic/505 generic/506 generic/507 generic/508 generic/530 generic/536 generic/599 generic/622 xfs/051 xfs/079 xfs/121 xfs/181 xfs/212
> Not run: generic/507
> Passed all 33 tests
>
> gustavo@...fy:~/git/xfstests$ time sudo ./check -g log 2>&1 | tee xfs-log-no-patch.out
> FSTYP -- xfs (debug)
> PLATFORM -- Linux/x86_64 beefy 5.11.0-next-20210301 #4 SMP Mon Mar 1 05:42:06 CST 2021
> MKFS_OPTIONS -- -f -bsize=4096 /dev/sda4
> MOUNT_OPTIONS -- /dev/sda4 /mnt/scratch
>
> generic/034 1s ... 1s
> generic/039 1s ... 1s
> generic/040 5s ... 5s
> generic/041 7s ... 7s
> generic/043 13s ... 13s
> generic/044 14s ... 14s
> generic/045 18s ... 18s
> generic/046 14s ... 14s
> generic/051 76s ... 76s
> generic/052 1s ... 2s
> generic/054 30s ... 48s
> generic/055 23s ... 15s
> generic/056 1s ... 1s
> generic/057 1s ... 1s
> generic/059 2s ... 2s
> generic/065 1s ... 1s
> generic/066 1s ... 2s
> generic/073 1s ... 1s
> generic/090 1s ... 1s
> generic/101 1s ... 1s
> generic/104 1s ... 1s
> generic/106 1s ... 1s
> generic/107 1s ... 1s
> generic/177 1s ... 1s
> generic/311 67s ... 67s
> generic/321 2s ... 2s
> generic/322 1s ... 2s
> generic/325 1s ... 1s
> generic/335 1s ... 1s
> generic/336 2s ... 1s
> generic/341 1s ... 1s
> generic/342 1s ... 1s
> generic/343 1s ... 1s
> generic/376 1s ... 1s
> generic/388 75s ... 97s
> generic/417 15s ... 12s
> generic/455 [not run] This test requires a valid $LOGWRITES_DEV
> generic/457 [not run] This test requires a valid $LOGWRITES_DEV
> generic/475 88s ... 89s
> generic/479 2s ... 2s
> generic/480 1s ... 1s
> generic/481 1s ... 1s
> generic/483 7s ... 6s
> generic/489 1s ... 1s
> generic/498 1s ... 1s
> generic/501 61s ... 63s
> generic/502 1s ... 1s
> generic/509 1s ... 1s
> generic/510 1s ... 1s
> generic/512 1s ... 1s
> generic/520 16s ... 17s
> generic/526 2s ... 1s
> generic/527 0s ... 1s
> generic/534 0s ... 1s
> generic/535 2s ... 1s
> generic/546 3s ... 3s
> generic/547 2s ... 2s
> generic/552 1s ... 1s
> generic/557 1s ... 2s
> generic/588 2s ... 1s
> shared/002 9s ... 9s
> xfs/011 18s ... 18s
> xfs/029 1s ... 1s
> xfs/051 18s ... 18s
> xfs/057 23s ... 23s
> xfs/079 14s ... 14s
> xfs/095 1s ... 1s
> xfs/119 3s ... 3s
> xfs/121 6s ... 6s
> xfs/141 14s ... 26s
> xfs/181 14s ... 14s
> xfs/216 3s ... 2s
> xfs/217 2s ... 2s
> xfs/439 [not run] test requires XFS bug_on_assert to be off, turn it off to run the test
> Ran: generic/034 generic/039 generic/040 generic/041 generic/043 generic/044 generic/045 generic/046 generic/051 generic/052 generic/054 generic/055 generic/056 generic/057 generic/059 generic/065 generic/066 generic/073 generic/090 generic/101 generic/104 generic/106 generic/107 generic/177 generic/311 generic/321 generic/322 generic/325 generic/335 generic/336 generic/341 generic/342 generic/343 generic/376 generic/388 generic/417 generic/455 generic/457 generic/475 generic/479 generic/480 generic/481 generic/483 generic/489 generic/498 generic/501 generic/502 generic/509 generic/510 generic/512 generic/520 generic/526 generic/527 generic/534 generic/535 generic/546 generic/547 generic/552 generic/557 generic/588 shared/002 xfs/011 xfs/029 xfs/051 xfs/057 xfs/079 xfs/095 xfs/119 xfs/121 xfs/141 xfs/181 xfs/216 xfs/217 xfs/439
> Not run: generic/455 generic/457 xfs/439
> Passed all 74 tests
>
> These are the results of running ./check -g shutdown and ./check -g
> log, respectively, on 5.11.0-xfstests-patched-next-20210301+ kernel
> _with_ this patch applied on top:
>
> gustavo@...fy:~/git/xfstests$ time sudo ./check -g shutdown 2>&1 | tee xfs-shutdown-patched.out
> FSTYP -- xfs (debug)
> PLATFORM -- Linux/x86_64 beefy 5.11.0-xfstests-patched-next-20210301+ #10 SMP Mon Mar 1 17:36:20 CST 2021
> MKFS_OPTIONS -- -f -bsize=4096 /dev/sda4
> MOUNT_OPTIONS -- /dev/sda4 /mnt/scratch
>
> generic/042 2s ... 3s
> generic/043 13s ... 12s
> generic/044 14s ... 15s
> generic/045 18s ... 18s
> generic/046 14s ... 15s
> generic/047 21s ... 21s
> generic/048 51s ... 51s
> generic/049 9s ... 8s
> generic/050 1s ... 2s
> generic/051 76s ... 77s
> generic/052 6s ... 2s
> generic/054 35s ... 48s
> generic/055 16s ... 17s
> generic/388 77s ... 73s
> generic/392 7s ... 5s
> generic/417 13s ... 11s
> generic/461 22s ... 21s
> generic/468 2s ... 3s
> generic/474 2s ... 1s
> generic/475 90s ... 96s
> generic/505 3s ... 3s
> generic/506 1s ... 2s
> generic/507 [not run] file system doesn't support chattr +AsSu
> generic/508 2s ... 10s
> generic/530 9s ... 13s
> generic/536 2s ... 1s
> generic/599 1s ... 1s
> generic/622 24s ... 25s
> xfs/051 18s ... 18s
> xfs/079 14s ... 13s
> xfs/121 6s ... 8s
> xfs/181 11s ... 14s
> xfs/212 2s ... 1s
> Ran: generic/042 generic/043 generic/044 generic/045 generic/046 generic/047 generic/048 generic/049 generic/050 generic/051 generic/052 generic/054 generic/055 generic/388 generic/392 generic/417 generic/461 generic/468 generic/474 generic/475 generic/505 generic/506 generic/507 generic/508 generic/530 generic/536 generic/599 generic/622 xfs/051 xfs/079 xfs/121 xfs/181 xfs/212
> Not run: generic/507
> Passed all 33 tests
>
> gustavo@...fy:~/git/xfstests$ time sudo ./check -g log 2>&1 | tee xfs-log-patched.out
> FSTYP -- xfs (debug)
> PLATFORM -- Linux/x86_64 beefy 5.11.0-xfstests-patched-next-20210301+ #10 SMP Mon Mar 1 17:36:20 CST 2021
> MKFS_OPTIONS -- -f -bsize=4096 /dev/sda4
> MOUNT_OPTIONS -- /dev/sda4 /mnt/scratch
>
> generic/034 1s ... 1s
> generic/039 1s ... 1s
> generic/040 5s ... 5s
> generic/041 7s ... 7s
> generic/043 12s ... 13s
> generic/044 15s ... 15s
> generic/045 18s ... 18s
> generic/046 15s ... 14s
> generic/051 77s ... 76s
> generic/052 2s ... 1s
> generic/054 48s ... 29s
> generic/055 17s ... 16s
> generic/056 1s ... 1s
> generic/057 1s ... 1s
> generic/059 2s ... 2s
> generic/065 1s ... 1s
> generic/066 1s ... 1s
> generic/073 1s ... 1s
> generic/090 1s ... 1s
> generic/101 1s ... 1s
> generic/104 1s ... 1s
> generic/106 1s ... 1s
> generic/107 1s ... 1s
> generic/177 1s ... 1s
> generic/311 68s ... 68s
> generic/321 2s ... 2s
> generic/322 1s ... 1s
> generic/325 2s ... 1s
> generic/335 1s ... 1s
> generic/336 1s ... 1s
> generic/341 1s ... 1s
> generic/342 1s ... 1s
> generic/343 1s ... 1s
> generic/376 1s ... 1s
> generic/388 73s ... 83s
> generic/417 11s ... 11s
> generic/455 [not run] This test requires a valid $LOGWRITES_DEV
> generic/457 [not run] This test requires a valid $LOGWRITES_DEV
> generic/475 96s ... 83s
> generic/479 2s
> generic/480 2s ... 1s
> generic/481 0s ... 1s
> generic/483 7s ... 7s
> generic/489 1s ... 1s
> generic/498 1s ... 1s
> generic/501 63s ... 61s
> generic/502 1s ... 1s
> generic/509 1s ... 1s
> generic/510 1s ... 1s
> generic/512 1s ... 1s
> generic/520 16s ... 16s
> generic/526 1s ... 1s
> generic/527 1s ... 1s
> generic/534 1s ... 1s
> generic/535 1s ... 1s
> generic/546 4s ... 4s
> generic/547 2s ... 2s
> generic/552 1s ... 1s
> generic/557 1s ... 1s
> generic/588 2s ... 1s
> shared/002 8s ... 9s
> xfs/011 18s ... 18s
> xfs/029 1s ... 1s
> xfs/051 18s ... 18s
> xfs/057 23s ... 24s
> xfs/079 13s ... 14s
> xfs/095 2s ... 1s
> xfs/119 3s ... 3s
> xfs/121 8s ... 6s
> xfs/141 18s ... 12s
> xfs/181 14s ... 12s
> xfs/216 3s ... 2s
> xfs/217 2s ... 2s
> xfs/439 [not run] test requires XFS bug_on_assert to be off, turn it off to run the test
> Ran: generic/034 generic/039 generic/040 generic/041 generic/043 generic/044 generic/045 generic/046 generic/051 generic/052 generic/054 generic/055 generic/056 generic/057 generic/059 generic/065 generic/066 generic/073 generic/090 generic/101 generic/104 generic/106 generic/107 generic/177 generic/311 generic/321 generic/322 generic/325 generic/335 generic/336 generic/341 generic/342 generic/343 generic/376 generic/388 generic/417 generic/455 generic/457 generic/475 generic/479 generic/480 generic/481 generic/483 generic/489 generic/498 generic/501 generic/502 generic/509 generic/510 generic/512 generic/520 generic/526 generic/527 generic/534 generic/535 generic/546 generic/547 generic/552 generic/557 generic/588 shared/002 xfs/011 xfs/029 xfs/051 xfs/057 xfs/079 xfs/095 xfs/119 xfs/121 xfs/141 xfs/181 xfs/216 xfs/217 xfs/439
> Not run: generic/455 generic/457 xfs/439
> Passed all 74 tests
>
> Notice that the test results before and after this patch is applied are
> identical and successful. Other tests might need to be run in order to
> verify everything is working as expected. For such tests, the intervention
> of the maintainers might be needed.
>
> [1] https://en.wikipedia.org/wiki/Flexible_array_member
> [2] https://www.kernel.org/doc/html/v5.9/process/deprecated.html#zero-length-and-one-element-arrays
>
> Link: https://github.com/KSPP/linux/issues/79
> Build-tested-by: kernel test robot <lkp@...el.com>
> Link: https://lore.kernel.org/lkml/603e3177.WsvTXRpcLn5wdYW6%25lkp@intel.com/
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
> fs/xfs/libxfs/xfs_log_format.h | 12 +++++------
> fs/xfs/xfs_extfree_item.c | 39 +++++++++++++++-------------------
> fs/xfs/xfs_ondisk.h | 8 +++----
> 3 files changed, 27 insertions(+), 32 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h
> index 8bd00da6d2a4..9934a465b441 100644
> --- a/fs/xfs/libxfs/xfs_log_format.h
> +++ b/fs/xfs/libxfs/xfs_log_format.h
> @@ -574,7 +574,7 @@ typedef struct xfs_efi_log_format {
> uint16_t efi_size; /* size of this item */
> uint32_t efi_nextents; /* # extents to free */
> uint64_t efi_id; /* efi identifier */
> - xfs_extent_t efi_extents[1]; /* array of extents to free */
> + xfs_extent_t efi_extents[]; /* array of extents to free */
> } xfs_efi_log_format_t;
>
> typedef struct xfs_efi_log_format_32 {
> @@ -582,7 +582,7 @@ typedef struct xfs_efi_log_format_32 {
> uint16_t efi_size; /* size of this item */
> uint32_t efi_nextents; /* # extents to free */
> uint64_t efi_id; /* efi identifier */
> - xfs_extent_32_t efi_extents[1]; /* array of extents to free */
> + xfs_extent_32_t efi_extents[]; /* array of extents to free */
> } __attribute__((packed)) xfs_efi_log_format_32_t;
>
> typedef struct xfs_efi_log_format_64 {
> @@ -590,7 +590,7 @@ typedef struct xfs_efi_log_format_64 {
> uint16_t efi_size; /* size of this item */
> uint32_t efi_nextents; /* # extents to free */
> uint64_t efi_id; /* efi identifier */
> - xfs_extent_64_t efi_extents[1]; /* array of extents to free */
> + xfs_extent_64_t efi_extents[]; /* array of extents to free */
> } xfs_efi_log_format_64_t;
>
> /*
> @@ -603,7 +603,7 @@ typedef struct xfs_efd_log_format {
> uint16_t efd_size; /* size of this item */
> uint32_t efd_nextents; /* # of extents freed */
> uint64_t efd_efi_id; /* id of corresponding efi */
> - xfs_extent_t efd_extents[1]; /* array of extents freed */
> + xfs_extent_t efd_extents[]; /* array of extents freed */
> } xfs_efd_log_format_t;
>
> typedef struct xfs_efd_log_format_32 {
> @@ -611,7 +611,7 @@ typedef struct xfs_efd_log_format_32 {
> uint16_t efd_size; /* size of this item */
> uint32_t efd_nextents; /* # of extents freed */
> uint64_t efd_efi_id; /* id of corresponding efi */
> - xfs_extent_32_t efd_extents[1]; /* array of extents freed */
> + xfs_extent_32_t efd_extents[]; /* array of extents freed */
> } __attribute__((packed)) xfs_efd_log_format_32_t;
>
> typedef struct xfs_efd_log_format_64 {
> @@ -619,7 +619,7 @@ typedef struct xfs_efd_log_format_64 {
> uint16_t efd_size; /* size of this item */
> uint32_t efd_nextents; /* # of extents freed */
> uint64_t efd_efi_id; /* id of corresponding efi */
> - xfs_extent_64_t efd_extents[1]; /* array of extents freed */
> + xfs_extent_64_t efd_extents[]; /* array of extents freed */
> } xfs_efd_log_format_64_t;
>
> /*
> diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c
> index 93223ebb3372..5ed3ea93071c 100644
> --- a/fs/xfs/xfs_extfree_item.c
> +++ b/fs/xfs/xfs_extfree_item.c
> @@ -73,8 +73,8 @@ static inline int
> xfs_efi_item_sizeof(
> struct xfs_efi_log_item *efip)
> {
> - return sizeof(struct xfs_efi_log_format) +
> - (efip->efi_format.efi_nextents - 1) * sizeof(xfs_extent_t);
> + return struct_size(&efip->efi_format, efi_extents,
> + efip->efi_format.efi_nextents);
> }
>
> STATIC void
> @@ -153,17 +153,14 @@ xfs_efi_init(
>
> {
> struct xfs_efi_log_item *efip;
> - uint size;
>
> ASSERT(nextents > 0);
> - if (nextents > XFS_EFI_MAX_FAST_EXTENTS) {
> - size = (uint)(sizeof(struct xfs_efi_log_item) +
> - ((nextents - 1) * sizeof(xfs_extent_t)));
> - efip = kmem_zalloc(size, 0);
> - } else {
> + if (nextents > XFS_EFI_MAX_FAST_EXTENTS)
> + efip = kmem_zalloc(struct_size(efip, efi_format.efi_extents,
> + nextents), 0);
> + else
> efip = kmem_cache_zalloc(xfs_efi_zone,
> GFP_KERNEL | __GFP_NOFAIL);
> - }
>
> xfs_log_item_init(mp, &efip->efi_item, XFS_LI_EFI, &xfs_efi_item_ops);
> efip->efi_format.efi_nextents = nextents;
> @@ -186,12 +183,12 @@ xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
> {
> xfs_efi_log_format_t *src_efi_fmt = buf->i_addr;
> uint i;
> - uint len = sizeof(xfs_efi_log_format_t) +
> - (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_t);
> + size_t len = struct_size(src_efi_fmt, efi_extents,
> + src_efi_fmt->efi_nextents);
> uint len32 = sizeof(xfs_efi_log_format_32_t) +
> - (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_32_t);
> + src_efi_fmt->efi_nextents * sizeof(xfs_extent_32_t);
Shouldn't these be converted to struct_size() too?
It seems to work all right for casted NULL pointers, and then we get all
the typechecking and multiplication overflow checking, e.g.:
size_t len64 = struct_size((struct xfs_efi_log_format_32 *)NULL,
efi_extents src_efi_fmt->efi_nextents);
--D
> uint len64 = sizeof(xfs_efi_log_format_64_t) +
> - (src_efi_fmt->efi_nextents - 1) * sizeof(xfs_extent_64_t);
> + src_efi_fmt->efi_nextents * sizeof(xfs_extent_64_t);
>
> if (buf->i_len == len) {
> memcpy((char *)dst_efi_fmt, (char*)src_efi_fmt, len);
> @@ -254,7 +251,7 @@ xfs_efd_item_sizeof(
> struct xfs_efd_log_item *efdp)
> {
> return sizeof(xfs_efd_log_format_t) +
> - (efdp->efd_format.efd_nextents - 1) * sizeof(xfs_extent_t);
> + efdp->efd_format.efd_nextents * sizeof(xfs_extent_t);
> }
>
> STATIC void
> @@ -328,14 +325,12 @@ xfs_trans_get_efd(
>
> ASSERT(nextents > 0);
>
> - if (nextents > XFS_EFD_MAX_FAST_EXTENTS) {
> - efdp = kmem_zalloc(sizeof(struct xfs_efd_log_item) +
> - (nextents - 1) * sizeof(struct xfs_extent),
> - 0);
> - } else {
> + if (nextents > XFS_EFD_MAX_FAST_EXTENTS)
> + efdp = kmem_zalloc(struct_size(efip, efi_format.efi_extents,
> + nextents), 0);
> + else
> efdp = kmem_cache_zalloc(xfs_efd_zone,
> GFP_KERNEL | __GFP_NOFAIL);
> - }
>
> xfs_log_item_init(tp->t_mountp, &efdp->efd_item, XFS_LI_EFD,
> &xfs_efd_item_ops);
> @@ -747,9 +742,9 @@ xlog_recover_efd_commit_pass2(
>
> efd_formatp = item->ri_buf[0].i_addr;
> ASSERT((item->ri_buf[0].i_len == (sizeof(xfs_efd_log_format_32_t) +
> - ((efd_formatp->efd_nextents - 1) * sizeof(xfs_extent_32_t)))) ||
> + (efd_formatp->efd_nextents * sizeof(xfs_extent_32_t)))) ||
> (item->ri_buf[0].i_len == (sizeof(xfs_efd_log_format_64_t) +
> - ((efd_formatp->efd_nextents - 1) * sizeof(xfs_extent_64_t)))));
> + (efd_formatp->efd_nextents * sizeof(xfs_extent_64_t)))));
>
> xlog_recover_release_intent(log, XFS_LI_EFI, efd_formatp->efd_efi_id);
> return 0;
> diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h
> index 0aa87c210104..f58e0510385a 100644
> --- a/fs/xfs/xfs_ondisk.h
> +++ b/fs/xfs/xfs_ondisk.h
> @@ -118,10 +118,10 @@ xfs_check_ondisk_structs(void)
> /* log structures */
> XFS_CHECK_STRUCT_SIZE(struct xfs_buf_log_format, 88);
> XFS_CHECK_STRUCT_SIZE(struct xfs_dq_logformat, 24);
> - XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_32, 28);
> - XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_64, 32);
> - XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_32, 28);
> - XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_64, 32);
> + XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_32, 16);
> + XFS_CHECK_STRUCT_SIZE(struct xfs_efd_log_format_64, 16);
> + XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_32, 16);
> + XFS_CHECK_STRUCT_SIZE(struct xfs_efi_log_format_64, 16);
> XFS_CHECK_STRUCT_SIZE(struct xfs_extent_32, 12);
> XFS_CHECK_STRUCT_SIZE(struct xfs_extent_64, 16);
> XFS_CHECK_STRUCT_SIZE(struct xfs_log_dinode, 176);
> --
> 2.27.0
>
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