This is a note to let you know that I've just added the patch titled
xfs: open code insert range extent split helper
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
xfs-open-code-insert-range-extent-split-helper.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Oct 26 04:49:40 PM CEST 2022
From: Chandan Babu R <chandan.babu@xxxxxxxxxx>
Date: Wed, 26 Oct 2022 11:58:18 +0530
Subject: xfs: open code insert range extent split helper
To: gregkh@xxxxxxxxxxxxxxxxxxx
Cc: sashal@xxxxxxxxxx, mcgrof@xxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, stable@xxxxxxxxxxxxxxx, djwong@xxxxxxxxxx, chandan.babu@xxxxxxxxxx, amir73il@xxxxxxxxx, leah.rumancik@xxxxxxxxx
Message-ID: <20221026062843.927600-2-chandan.babu@xxxxxxxxxx>
From: Brian Foster <bfoster@xxxxxxxxxx>
commit b73df17e4c5ba977205253fb7ef54267717a3cba upstream.
The insert range operation currently splits the extent at the target
offset in a separate transaction and lock cycle from the one that
shifts extents. In preparation for reworking insert range into an
atomic operation, lift the code into the caller so it can be easily
condensed to a single rolling transaction and lock cycle and
eliminate the helper. No functional changes.
Signed-off-by: Brian Foster <bfoster@xxxxxxxxxx>
Reviewed-by: Allison Collins <allison.henderson@xxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Acked-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Signed-off-by: Chandan Babu R <chandan.babu@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/xfs/libxfs/xfs_bmap.c | 32 ++------------------------------
fs/xfs/libxfs/xfs_bmap.h | 3 ++-
fs/xfs/xfs_bmap_util.c | 14 +++++++++++++-
3 files changed, 17 insertions(+), 32 deletions(-)
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -5925,8 +5925,8 @@ del_cursor:
* @split_fsb is a block where the extents is split. If split_fsb lies in a
* hole or the first block of extents, just return 0.
*/
-STATIC int
-xfs_bmap_split_extent_at(
+int
+xfs_bmap_split_extent(
struct xfs_trans *tp,
struct xfs_inode *ip,
xfs_fileoff_t split_fsb)
@@ -6037,34 +6037,6 @@ del_cursor:
return error;
}
-int
-xfs_bmap_split_extent(
- struct xfs_inode *ip,
- xfs_fileoff_t split_fsb)
-{
- struct xfs_mount *mp = ip->i_mount;
- struct xfs_trans *tp;
- int error;
-
- error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write,
- XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp);
- if (error)
- return error;
-
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
-
- error = xfs_bmap_split_extent_at(tp, ip, split_fsb);
- if (error)
- goto out;
-
- return xfs_trans_commit(tp);
-
-out:
- xfs_trans_cancel(tp);
- return error;
-}
-
/* Deferred mapping is only for real extents in the data fork. */
static bool
xfs_bmap_is_update_needed(
--- a/fs/xfs/libxfs/xfs_bmap.h
+++ b/fs/xfs/libxfs/xfs_bmap.h
@@ -222,7 +222,8 @@ int xfs_bmap_can_insert_extents(struct x
int xfs_bmap_insert_extents(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_fileoff_t *next_fsb, xfs_fileoff_t offset_shift_fsb,
bool *done, xfs_fileoff_t stop_fsb);
-int xfs_bmap_split_extent(struct xfs_inode *ip, xfs_fileoff_t split_offset);
+int xfs_bmap_split_extent(struct xfs_trans *tp, struct xfs_inode *ip,
+ xfs_fileoff_t split_offset);
int xfs_bmapi_reserve_delalloc(struct xfs_inode *ip, int whichfork,
xfs_fileoff_t off, xfs_filblks_t len, xfs_filblks_t prealloc,
struct xfs_bmbt_irec *got, struct xfs_iext_cursor *cur,
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1326,7 +1326,19 @@ xfs_insert_file_space(
* is not the starting block of extent, we need to split the extent at
* stop_fsb.
*/
- error = xfs_bmap_split_extent(ip, stop_fsb);
+ error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write,
+ XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp);
+ if (error)
+ return error;
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+
+ error = xfs_bmap_split_extent(tp, ip, stop_fsb);
+ if (error)
+ goto out_trans_cancel;
+
+ error = xfs_trans_commit(tp);
if (error)
return error;
Patches currently in stable-queue which might be from chandan.babu@xxxxxxxxxx are
queue-5.4/xfs-check-owner-of-dir3-blocks.patch
queue-5.4/xfs-throttle-commits-on-delayed-background-cil-push.patch
queue-5.4/xfs-factor-common-ail-item-deletion-code.patch
queue-5.4/xfs-remove-the-xfs_dq_logitem_t-typedef.patch
queue-5.4/xfs-fix-buffer-corruption-reporting-when-xfs_dir3_free_header_check-fails.patch
queue-5.4/xfs-xfs_buf_corruption_error-should-take-__this_address.patch
queue-5.4/xfs-open-code-insert-range-extent-split-helper.patch
queue-5.4/xfs-don-t-write-a-corrupt-unmount-record-to-force-summary-counter-recalc.patch
queue-5.4/xfs-check-owner-of-dir3-data-blocks.patch
queue-5.4/xfs-factor-out-quotaoff-intent-ail-removal-and-memory-free.patch
queue-5.4/xfs-trylock-underlying-buffer-on-dquot-flush.patch
queue-5.4/xfs-remove-the-xfs_disk_dquot_t-and-xfs_dquot_t.patch
queue-5.4/xfs-add-a-function-to-deal-with-corrupt-buffers-post-verifiers.patch
queue-5.4/xfs-fix-use-after-free-on-cil-context-on-shutdown.patch
queue-5.4/xfs-tail-updates-only-need-to-occur-when-lsn-changes.patch
queue-5.4/xfs-use-scnprintf-for-avoiding-potential-buffer-overflow.patch
queue-5.4/xfs-move-inode-flush-to-the-sync-workqueue.patch
queue-5.4/xfs-lower-cil-flush-limit-for-large-logs.patch
queue-5.4/xfs-rework-collapse-range-into-an-atomic-operation.patch
queue-5.4/xfs-remove-the-xfs_qoff_logitem_t-typedef.patch
queue-5.4/xfs-fix-unmount-hang-and-memory-leak-on-shutdown-during-quotaoff.patch
queue-5.4/xfs-preserve-default-grace-interval-during-quotacheck.patch
queue-5.4/xfs-replace-function-declaration-by-actual-definition.patch
queue-5.4/xfs-rework-insert-range-into-an-atomic-operation.patch
queue-5.4/xfs-factor-out-a-new-xfs_log_force_inode-helper.patch
queue-5.4/xfs-reflink-should-force-the-log-out-if-mounted-with-wsync.patch
