When we call create(), lseek() and write() sequentially, offset != 0 cannot be used as a judgment condition for whether the file already has extents. Furthermore, when xfs_bmap_adjacent() has not given a better blkno, it is not necessary to use exact EOF block allocation. Signed-off-by: Jinliang Zheng <alexjlzheng@xxxxxxxxxxx> --- Changelog: - V2: Fix the entry condition - V1: https://lore.kernel.org/linux-xfs/ZyFJm7xg7Msd6eVr@xxxxxxxxxxxxxxxxxxx/T/#t --- fs/xfs/libxfs/xfs_bmap.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index 36dd08d13293..c1e5372b6b2e 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -3531,12 +3531,14 @@ xfs_bmap_btalloc_at_eof( int error; /* - * If there are already extents in the file, try an exact EOF block - * allocation to extend the file as a contiguous extent. If that fails, - * or it's the first allocation in a file, just try for a stripe aligned - * allocation. + * If there are already extents in the file, and xfs_bmap_adjacent() has + * given a better blkno, try an exact EOF block allocation to extend the + * file as a contiguous extent. If that fails, or it's the first + * allocation in a file, just try for a stripe aligned allocation. */ - if (ap->offset) { + if (ap->prev.br_startoff != NULLFILEOFF && + !isnullstartblock(ap->prev.br_startblock) && + xfs_bmap_adjacent_valid(ap, ap->blkno, ap->prev.br_startblock)) { xfs_extlen_t nextminlen = 0; /* -- 2.41.1
