From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Allison Henderson <allison.henderson@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH 02/21] Add trans toggle to attr routines
Date: Mon, 7 May 2018 16:52:13 -0700 [thread overview]
Message-ID: <20180507235213.GU11261@magnolia> (raw)
In-Reply-To: <1525627494-12873-3-git-send-email-allison.henderson@oracle.com>
On Sun, May 06, 2018 at 10:24:35AM -0700, Allison Henderson wrote:
> This patch adds a roll_trans parameter to all attribute routines.
> Calling functions may pass true to roll transactions as normal,
> or false to hold them. We will need this later for delayed
> attribute operations.
/me kinda dislikes this, but I guess the reason for the roll_trans
parameter is that we can't call defer_finish from a defer ops finishing
function, right?
Under the existing attr code we do things like:
_trans_alloc
_defer_init
*dirty transaction, accumulate dfops*
_defer_finish
*finish items*
*dirty transaction again, accumulate more dfops*
_defer_finish
*finish_items*
_trans_commit
But since we /really/ can't have nested _defer_finish calls I guess we
have to do something like this?
_defer_finish
_attr_finish_item
*dirty transaction, accumulate dfops*
bail out with EAGAIN
_defer_roll
_attr_finish_item (again)
*dirty transaction again, accumulate more dfops*
_defer_roll
*finish items*
Thoughts?
--D
> Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
> ---
> fs/xfs/libxfs/xfs_attr.c | 144 +++++++++++++++++++++++-------------------
> fs/xfs/libxfs/xfs_attr_leaf.c | 12 ++--
> fs/xfs/libxfs/xfs_attr_leaf.h | 8 +--
> 3 files changed, 90 insertions(+), 74 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_attr.c b/fs/xfs/libxfs/xfs_attr.c
> index ce4a34a..0ade22b 100644
> --- a/fs/xfs/libxfs/xfs_attr.c
> +++ b/fs/xfs/libxfs/xfs_attr.c
> @@ -55,21 +55,21 @@
> /*
> * Internal routines when attribute list fits inside the inode.
> */
> -STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args);
> +STATIC int xfs_attr_shortform_addname(xfs_da_args_t *args, bool roll_trans);
>
> /*
> * Internal routines when attribute list is one block.
> */
> STATIC int xfs_attr_leaf_get(xfs_da_args_t *args);
> -STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args);
> -STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args);
> +STATIC int xfs_attr_leaf_addname(xfs_da_args_t *args, bool roll_trans);
> +STATIC int xfs_attr_leaf_removename(xfs_da_args_t *args, bool roll_trans);
>
> /*
> * Internal routines when attribute list is more than one block.
> */
> STATIC int xfs_attr_node_get(xfs_da_args_t *args);
> -STATIC int xfs_attr_node_addname(xfs_da_args_t *args);
> -STATIC int xfs_attr_node_removename(xfs_da_args_t *args);
> +STATIC int xfs_attr_node_addname(xfs_da_args_t *args, bool roll_trans);
> +STATIC int xfs_attr_node_removename(xfs_da_args_t *args, bool roll_trans);
> STATIC int xfs_attr_fillstate(xfs_da_state_t *state);
> STATIC int xfs_attr_refillstate(xfs_da_state_t *state);
>
> @@ -297,7 +297,7 @@ xfs_attr_set(
> * Try to add the attr to the attribute list in
> * the inode.
> */
> - error = xfs_attr_shortform_addname(&args);
> + error = xfs_attr_shortform_addname(&args, true);
> if (error != -ENOSPC) {
> /*
> * Commit the shortform mods, and we're done.
> @@ -356,9 +356,9 @@ xfs_attr_set(
> }
>
> if (xfs_bmap_one_block(dp, XFS_ATTR_FORK))
> - error = xfs_attr_leaf_addname(&args);
> + error = xfs_attr_leaf_addname(&args, true);
> else
> - error = xfs_attr_node_addname(&args);
> + error = xfs_attr_node_addname(&args, true);
> if (error)
> goto out;
>
> @@ -453,11 +453,11 @@ xfs_attr_remove(
> error = -ENOATTR;
> } else if (dp->i_d.di_aformat == XFS_DINODE_FMT_LOCAL) {
> ASSERT(dp->i_afp->if_flags & XFS_IFINLINE);
> - error = xfs_attr_shortform_remove(&args);
> + error = xfs_attr_shortform_remove(&args, true);
> } else if (xfs_bmap_one_block(dp, XFS_ATTR_FORK)) {
> - error = xfs_attr_leaf_removename(&args);
> + error = xfs_attr_leaf_removename(&args, true);
> } else {
> - error = xfs_attr_node_removename(&args);
> + error = xfs_attr_node_removename(&args, true);
> }
>
> if (error)
> @@ -498,7 +498,7 @@ xfs_attr_remove(
> * This is the external routine.
> */
> STATIC int
> -xfs_attr_shortform_addname(xfs_da_args_t *args)
> +xfs_attr_shortform_addname(xfs_da_args_t *args, bool roll_trans)
> {
> int newsize, forkoff, retval;
>
> @@ -510,7 +510,7 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
> } else if (retval == -EEXIST) {
> if (args->flags & ATTR_CREATE)
> return retval;
> - retval = xfs_attr_shortform_remove(args);
> + retval = xfs_attr_shortform_remove(args, roll_trans);
> ASSERT(retval == 0);
> }
>
> @@ -525,7 +525,7 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
> if (!forkoff)
> return -ENOSPC;
>
> - xfs_attr_shortform_add(args, forkoff);
> + xfs_attr_shortform_add(args, forkoff, roll_trans);
> return 0;
> }
>
> @@ -541,7 +541,7 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
> * if bmap_one_block() says there is only one block (ie: no remote blks).
> */
> STATIC int
> -xfs_attr_leaf_addname(xfs_da_args_t *args)
> +xfs_attr_leaf_addname(xfs_da_args_t *args, bool roll_trans)
> {
> xfs_inode_t *dp;
> struct xfs_buf *bp;
> @@ -604,36 +604,42 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
> * can manage its own transactions.
> */
> xfs_defer_init(args->dfops, args->firstblock);
> - error = xfs_attr3_leaf_to_node(args);
> - if (error)
> - goto out_defer_cancel;
> - xfs_defer_ijoin(args->dfops, dp);
> - error = xfs_defer_finish(&args->trans, args->dfops);
> + error = xfs_attr3_leaf_to_node(args, roll_trans);
> if (error)
> goto out_defer_cancel;
> + if (roll_trans) {
> + xfs_defer_ijoin(args->dfops, dp);
> + error = xfs_defer_finish(&args->trans, args->dfops);
> + if (error)
> + goto out_defer_cancel;
>
> - /*
> - * Commit the current trans (including the inode) and start
> - * a new one.
> - */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> - if (error)
> - return error;
> + /*
> + * Commit the current trans (including the inode) and start
> + * a new one.
> + */
> + error = xfs_trans_roll_inode(&args->trans, dp);
> + if (error)
> + return error;
> + }
>
> /*
> * Fob the whole rest of the problem off on the Btree code.
> */
> - error = xfs_attr_node_addname(args);
> + error = xfs_attr_node_addname(args, roll_trans);
> +
> return error;
> }
>
> - /*
> - * Commit the transaction that added the attr name so that
> - * later routines can manage their own transactions.
> - */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> - if (error)
> - return error;
> +
> + if (roll_trans) {
> + /*
> + * Commit the transaction that added the attr name so that
> + * later routines can manage their own transactions.
> + */
> + error = xfs_trans_roll_inode(&args->trans, dp);
> + if (error)
> + return error;
> + }
>
> /*
> * If there was an out-of-line value, allocate the blocks we
> @@ -691,9 +697,9 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
> /*
> * If the result is small enough, shrink it all into the inode.
> */
> - if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
> + if ((forkoff = xfs_attr_shortform_allfit(bp, dp)) && roll_trans) {
> xfs_defer_init(args->dfops, args->firstblock);
> - error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff, roll_trans);
> /* bp is gone due to xfs_da_shrink_inode */
> if (error)
> goto out_defer_cancel;
> @@ -727,7 +733,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
> * if bmap_one_block() says there is only one block (ie: no remote blks).
> */
> STATIC int
> -xfs_attr_leaf_removename(xfs_da_args_t *args)
> +xfs_attr_leaf_removename(xfs_da_args_t *args, bool roll_trans)
> {
> xfs_inode_t *dp;
> struct xfs_buf *bp;
> @@ -755,9 +761,9 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
> /*
> * If the result is small enough, shrink it all into the inode.
> */
> - if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
> + if ((forkoff = xfs_attr_shortform_allfit(bp, dp)) && roll_trans) {
> xfs_defer_init(args->dfops, args->firstblock);
> - error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff, roll_trans);
> /* bp is gone due to xfs_da_shrink_inode */
> if (error)
> goto out_defer_cancel;
> @@ -819,7 +825,7 @@ xfs_attr_leaf_get(xfs_da_args_t *args)
> * add a whole extra layer of confusion on top of that.
> */
> STATIC int
> -xfs_attr_node_addname(xfs_da_args_t *args)
> +xfs_attr_node_addname(xfs_da_args_t *args, bool roll_trans)
> {
> xfs_da_state_t *state;
> xfs_da_state_blk_t *blk;
> @@ -885,21 +891,23 @@ xfs_attr_node_addname(xfs_da_args_t *args)
> xfs_da_state_free(state);
> state = NULL;
> xfs_defer_init(args->dfops, args->firstblock);
> - error = xfs_attr3_leaf_to_node(args);
> + error = xfs_attr3_leaf_to_node(args, roll_trans);
> if (error)
> goto out_defer_cancel;
> xfs_defer_ijoin(args->dfops, dp);
> - error = xfs_defer_finish(&args->trans, args->dfops);
> - if (error)
> - goto out_defer_cancel;
> -
> - /*
> - * Commit the node conversion and start the next
> - * trans in the chain.
> - */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> - if (error)
> - goto out;
> + if (roll_trans) {
> + error = xfs_defer_finish(&args->trans, args->dfops);
> + if (error)
> + goto out_defer_cancel;
> +
> + /*
> + * Commit the node conversion and start the next
> + * trans in the chain.
> + */
> + error = xfs_trans_roll_inode(&args->trans, dp);
> + if (error)
> + goto out;
> + }
>
> goto restart;
> }
> @@ -915,9 +923,11 @@ xfs_attr_node_addname(xfs_da_args_t *args)
> if (error)
> goto out_defer_cancel;
> xfs_defer_ijoin(args->dfops, dp);
> - error = xfs_defer_finish(&args->trans, args->dfops);
> - if (error)
> - goto out_defer_cancel;
> + if (roll_trans) {
> + error = xfs_defer_finish(&args->trans, args->dfops);
> + if (error)
> + goto out_defer_cancel;
> + }
> } else {
> /*
> * Addition succeeded, update Btree hashvals.
> @@ -936,9 +946,11 @@ xfs_attr_node_addname(xfs_da_args_t *args)
> * Commit the leaf addition or btree split and start the next
> * trans in the chain.
> */
> - error = xfs_trans_roll_inode(&args->trans, dp);
> - if (error)
> - goto out;
> + if (roll_trans) {
> + error = xfs_trans_roll_inode(&args->trans, dp);
> + if (error)
> + goto out;
> + }
>
> /*
> * If there was an out-of-line value, allocate the blocks we
> @@ -1013,9 +1025,11 @@ xfs_attr_node_addname(xfs_da_args_t *args)
> if (error)
> goto out_defer_cancel;
> xfs_defer_ijoin(args->dfops, dp);
> - error = xfs_defer_finish(&args->trans, args->dfops);
> - if (error)
> - goto out_defer_cancel;
> + if (roll_trans) {
> + error = xfs_defer_finish(&args->trans, args->dfops);
> + if (error)
> + goto out_defer_cancel;
> + }
> }
>
> /*
> @@ -1054,7 +1068,7 @@ xfs_attr_node_addname(xfs_da_args_t *args)
> * the root node (a special case of an intermediate node).
> */
> STATIC int
> -xfs_attr_node_removename(xfs_da_args_t *args)
> +xfs_attr_node_removename(xfs_da_args_t *args, bool roll_trans)
> {
> xfs_da_state_t *state;
> xfs_da_state_blk_t *blk;
> @@ -1163,9 +1177,9 @@ xfs_attr_node_removename(xfs_da_args_t *args)
> if (error)
> goto out;
>
> - if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
> + if ((forkoff = xfs_attr_shortform_allfit(bp, dp)) && roll_trans) {
> xfs_defer_init(args->dfops, args->firstblock);
> - error = xfs_attr3_leaf_to_shortform(bp, args, forkoff);
> + error = xfs_attr3_leaf_to_shortform(bp, args, forkoff, roll_trans);
> /* bp is gone due to xfs_da_shrink_inode */
> if (error)
> goto out_defer_cancel;
> diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
> index 2135b8e..01935fe 100644
> --- a/fs/xfs/libxfs/xfs_attr_leaf.c
> +++ b/fs/xfs/libxfs/xfs_attr_leaf.c
> @@ -546,7 +546,7 @@ xfs_attr_shortform_create(xfs_da_args_t *args)
> * Overflow from the inode has already been checked for.
> */
> void
> -xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
> +xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff, bool roll_trans)
> {
> xfs_attr_shortform_t *sf;
> xfs_attr_sf_entry_t *sfe;
> @@ -618,7 +618,7 @@ xfs_attr_fork_remove(
> * Remove an attribute from the shortform attribute list structure.
> */
> int
> -xfs_attr_shortform_remove(xfs_da_args_t *args)
> +xfs_attr_shortform_remove(xfs_da_args_t *args, bool roll_trans)
> {
> xfs_attr_shortform_t *sf;
> xfs_attr_sf_entry_t *sfe;
> @@ -970,7 +970,8 @@ int
> xfs_attr3_leaf_to_shortform(
> struct xfs_buf *bp,
> struct xfs_da_args *args,
> - int forkoff)
> + int forkoff,
> + bool roll_trans)
> {
> struct xfs_attr_leafblock *leaf;
> struct xfs_attr3_icleaf_hdr ichdr;
> @@ -1039,7 +1040,7 @@ xfs_attr3_leaf_to_shortform(
> nargs.valuelen = be16_to_cpu(name_loc->valuelen);
> nargs.hashval = be32_to_cpu(entry->hashval);
> nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags);
> - xfs_attr_shortform_add(&nargs, forkoff);
> + xfs_attr_shortform_add(&nargs, forkoff, roll_trans);
> }
> error = 0;
>
> @@ -1053,7 +1054,8 @@ xfs_attr3_leaf_to_shortform(
> */
> int
> xfs_attr3_leaf_to_node(
> - struct xfs_da_args *args)
> + struct xfs_da_args *args,
> + bool roll_trans)
> {
> struct xfs_attr_leafblock *leaf;
> struct xfs_attr3_icleaf_hdr icleafhdr;
> diff --git a/fs/xfs/libxfs/xfs_attr_leaf.h b/fs/xfs/libxfs/xfs_attr_leaf.h
> index 4da08af..b5dea0e 100644
> --- a/fs/xfs/libxfs/xfs_attr_leaf.h
> +++ b/fs/xfs/libxfs/xfs_attr_leaf.h
> @@ -45,12 +45,12 @@ typedef struct xfs_attr_inactive_list {
> * Internal routines when attribute fork size < XFS_LITINO(mp).
> */
> void xfs_attr_shortform_create(struct xfs_da_args *args);
> -void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
> +void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff, bool roll_trans);
> int xfs_attr_shortform_lookup(struct xfs_da_args *args);
> int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
> int xfs_attr_shortform_to_leaf(struct xfs_da_args *args,
> struct xfs_buf **leaf_bp);
> -int xfs_attr_shortform_remove(struct xfs_da_args *args);
> +int xfs_attr_shortform_remove(struct xfs_da_args *args, bool roll_trans);
> int xfs_attr_shortform_allfit(struct xfs_buf *bp, struct xfs_inode *dp);
> int xfs_attr_shortform_bytesfit(struct xfs_inode *dp, int bytes);
> xfs_failaddr_t xfs_attr_shortform_verify(struct xfs_inode *ip);
> @@ -59,9 +59,9 @@ void xfs_attr_fork_remove(struct xfs_inode *ip, struct xfs_trans *tp);
> /*
> * Internal routines when attribute fork size == XFS_LBSIZE(mp).
> */
> -int xfs_attr3_leaf_to_node(struct xfs_da_args *args);
> +int xfs_attr3_leaf_to_node(struct xfs_da_args *args, bool roll_trans);
> int xfs_attr3_leaf_to_shortform(struct xfs_buf *bp,
> - struct xfs_da_args *args, int forkoff);
> + struct xfs_da_args *args, int forkoff, bool roll_trans);
> int xfs_attr3_leaf_clearflag(struct xfs_da_args *args);
> int xfs_attr3_leaf_setflag(struct xfs_da_args *args);
> int xfs_attr3_leaf_flipflags(struct xfs_da_args *args);
> --
> 2.7.4
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2018-05-07 23:52 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-06 17:24 [PATCH 00/21] Parent Pointers v6 Allison Henderson
2018-05-06 17:24 ` [PATCH 01/21] xfs: Move fs/xfs/xfs_attr.h to fs/xfs/libxfs/xfs_attr.h Allison Henderson
2018-05-07 23:39 ` Darrick J. Wong
2018-05-06 17:24 ` [PATCH 02/21] Add trans toggle to attr routines Allison Henderson
2018-05-07 23:52 ` Darrick J. Wong [this message]
2018-05-08 17:04 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 03/21] xfs: Add attibute set and helper functions Allison Henderson
2018-05-07 23:36 ` Darrick J. Wong
2018-05-08 7:25 ` Amir Goldstein
2018-05-08 17:02 ` Allison Henderson
2018-05-08 17:01 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 04/21] xfs: Add attibute remove " Allison Henderson
2018-05-07 23:21 ` Darrick J. Wong
2018-05-08 7:33 ` Amir Goldstein
2018-05-08 17:02 ` Allison Henderson
2018-05-08 17:14 ` Darrick J. Wong
2018-05-06 17:24 ` [PATCH 05/21] xfs: Set up infastructure for deferred attribute operations Allison Henderson
2018-05-07 23:19 ` Darrick J. Wong
2018-05-08 17:01 ` Allison Henderson
2018-05-08 9:55 ` Amir Goldstein
2018-05-06 17:24 ` [PATCH 06/21] xfs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2018-05-07 22:59 ` Darrick J. Wong
2018-05-08 17:01 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 07/21] xfs: Remove all strlen calls in all xfs_attr_* functions for attr names Allison Henderson
2018-05-07 22:54 ` Darrick J. Wong
2018-05-08 17:00 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 08/21] xfs: get directory offset when adding directory name Allison Henderson
2018-05-07 22:50 ` Darrick J. Wong
2018-05-06 17:24 ` [PATCH 09/21] xfs: get directory offset when removing " Allison Henderson
2018-05-07 22:48 ` Darrick J. Wong
2018-05-08 17:00 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 10/21] xfs: get directory offset when replacing a " Allison Henderson
2018-05-07 22:45 ` Darrick J. Wong
2018-05-08 17:00 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 11/21] xfs: add parent pointer support to attribute code Allison Henderson
2018-05-07 22:36 ` Darrick J. Wong
2018-05-06 17:24 ` [PATCH 12/21] xfs: define parent pointer xattr format Allison Henderson
2018-05-07 22:35 ` Darrick J. Wong
2018-05-08 17:00 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 13/21] xfs: extent transaction reservations for parent attributes Allison Henderson
2018-05-07 22:34 ` Darrick J. Wong
2018-05-08 17:00 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 14/21] Add lock_flags to xfs_ialloc and xfs_dir_ialloc Allison Henderson
2018-05-07 22:30 ` Darrick J. Wong
2018-05-08 16:59 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 15/21] xfs: parent pointer attribute creation Allison Henderson
2018-05-07 22:19 ` Darrick J. Wong
2018-05-08 16:58 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 16/21] xfs: add parent attributes to link Allison Henderson
2018-05-07 22:12 ` Darrick J. Wong
2018-05-08 16:58 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 17/21] xfs: remove parent pointers in unlink Allison Henderson
2018-05-07 21:59 ` Darrick J. Wong
2018-05-08 16:58 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 18/21] xfs: Add parent pointers to rename Allison Henderson
2018-05-07 21:52 ` Darrick J. Wong
2018-05-08 16:58 ` Allison Henderson
2018-05-08 10:04 ` Amir Goldstein
2018-05-06 17:24 ` [PATCH 19/21] xfs: Add the parent pointer support to the superblock version 5 Allison Henderson
2018-05-07 21:38 ` Darrick J. Wong
2018-05-08 16:58 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 20/21] xfs: Add parent pointer ioctl Allison Henderson
2018-05-07 21:36 ` Darrick J. Wong
2018-05-08 10:24 ` Amir Goldstein
2018-05-08 10:25 ` Amir Goldstein
2018-05-08 16:57 ` Allison Henderson
2018-05-15 16:27 ` Catalin Iacob
2018-05-15 16:52 ` Allison Henderson
2018-05-06 17:24 ` [PATCH 21/21] xfs: Add delayed attributes error tag Allison Henderson
2018-05-07 20:57 ` Darrick J. Wong
2018-05-08 5:36 ` [PATCH 00/21] Parent Pointers v6 Amir Goldstein
2018-05-08 17:03 ` Allison Henderson
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