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Diffstat (limited to 'fs/bcachefs/io_write.c')
| -rw-r--r-- | fs/bcachefs/io_write.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/bcachefs/io_write.c b/fs/bcachefs/io_write.c index 613f38436640..4eb0eda723ab 100644 --- a/fs/bcachefs/io_write.c +++ b/fs/bcachefs/io_write.c @@ -202,6 +202,17 @@ static inline int bch2_extent_update_i_size_sectors(struct btree_trans *trans, struct btree_iter iter; struct bkey_i *k; struct bkey_i_inode_v3 *inode; + /* + * Crazy performance optimization: + * Every extent update needs to also update the inode: the inode trigger + * will set bi->journal_seq to the journal sequence number of this + * transaction - for fsync. + * + * But if that's the only reason we're updating the inode (we're not + * updating bi_size or bi_sectors), then we don't need the inode update + * to be journalled - if we crash, the bi_journal_seq update will be + * lost, but that's fine. + */ unsigned inode_update_flags = BTREE_UPDATE_NOJOURNAL; int ret; |