XFS will use it to calculate CRC of written data. Signed-off-by: Andrey Albershteyn <aalbersh@xxxxxxxxxx> --- fs/iomap/buffered-io.c | 4 ++++ include/linux/iomap.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c index 93da48ec5801..d6231f4f78d9 100644 --- a/fs/iomap/buffered-io.c +++ b/fs/iomap/buffered-io.c @@ -1651,6 +1651,8 @@ iomap_ioend_can_merge(struct iomap_ioend *ioend, struct iomap_ioend *next) */ if (ioend->io_sector + (ioend->io_size >> 9) != next->io_sector) return false; + if (ioend->io_flags & IOMAP_F_NO_MERGE) + return false; return true; } @@ -1782,6 +1784,8 @@ static bool iomap_can_add_to_ioend(struct iomap_writepage_ctx *wpc, loff_t pos) */ if (wpc->nr_folios >= IOEND_BATCH_SIZE) return false; + if (wpc->iomap.flags & IOMAP_F_NO_MERGE) + return false; return true; } diff --git a/include/linux/iomap.h b/include/linux/iomap.h index f089969e4716..261772431fae 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -87,6 +87,8 @@ struct vm_fault; * Flags from 0x1000 up are for file system specific usage: */ #define IOMAP_F_PRIVATE (1U << 12) +/* No ioend merges for this operation */ +#define IOMAP_F_NO_MERGE (1U << 13) /* -- 2.47.0
