From: Christoph Hellwig Date: Thu, 2 May 2024 07:33:53 +0000 (+0200) Subject: xfs: upgrade the extent counters in xfs_reflink_end_cow_extent later X-Git-Tag: v6.10-rc1~87^2~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=99fb6b7ad1f2fb83d8df2c1382be63a1f50b1ae0;p=thirdparty%2Fkernel%2Flinux.git xfs: upgrade the extent counters in xfs_reflink_end_cow_extent later Defer the extent counter size upgrade until we know we're going to modify the extent mapping. This also defers dirtying the transaction and will allow us safely back out later in the function in later changes. Fixes: 4f86bb4b66c9 ("xfs: Conditionally upgrade existing inodes to use large extent counters") Reviewed-by: "Darrick J. Wong" Signed-off-by: Christoph Hellwig Signed-off-by: Chandan Babu R --- diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c index 24761e89ce9ae..93f775c13b664 100644 --- a/fs/xfs/xfs_reflink.c +++ b/fs/xfs/xfs_reflink.c @@ -732,14 +732,6 @@ xfs_reflink_end_cow_extent( xfs_ilock(ip, XFS_ILOCK_EXCL); xfs_trans_ijoin(tp, ip, 0); - error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK, - XFS_IEXT_REFLINK_END_COW_CNT); - if (error == -EFBIG) - error = xfs_iext_count_upgrade(tp, ip, - XFS_IEXT_REFLINK_END_COW_CNT); - if (error) - goto out_cancel; - /* * In case of racing, overlapping AIO writes no COW extents might be * left by the time I/O completes for the loser of the race. In that @@ -768,6 +760,14 @@ xfs_reflink_end_cow_extent( del = got; xfs_trim_extent(&del, *offset_fsb, end_fsb - *offset_fsb); + error = xfs_iext_count_may_overflow(ip, XFS_DATA_FORK, + XFS_IEXT_REFLINK_END_COW_CNT); + if (error == -EFBIG) + error = xfs_iext_count_upgrade(tp, ip, + XFS_IEXT_REFLINK_END_COW_CNT); + if (error) + goto out_cancel; + /* Grab the corresponding mapping in the data fork. */ nmaps = 1; error = xfs_bmapi_read(ip, del.br_startoff, del.br_blockcount, &data,