git: sys/vfs/hammer2: Add SEEK_HOLE / SEEK_DATA support

[Tomohiro Kusumi]

commit bd41e746e6b77eb2be2d92ce1a71fad590fb3a33
Author: Tomohiro Kusumi <tkusumi at netbsd.org>
Date:   Thu Jun 5 02:49:32 2025 -0700

    sys/vfs/hammer2: Add SEEK_HOLE / SEEK_DATA support
    
    Similar to ext2 and ufs using VOP_BMAP based vn_bmap_seekhole().
    
    - Add xop_bmap which corresponds to .vop_bmap.
    - Add BUF_CMD_SEEK to prevent xop_bmap from being used for other
     purposes e.g. cluster read / write. Note that vop_bmap_args::a_cmd
     is only used in here and HAMMER1 (supports BUF_CMD_READ only,
     and SEEK_XXX is unsupported).

Summary of changes:
 sys/kern/vfs_vnops.c               |  2 +-
 sys/sys/buf.h                      |  3 ++-
 sys/vfs/hammer2/hammer2.h          | 11 ++++++++
 sys/vfs/hammer2/hammer2_admin.c    |  1 +
 sys/vfs/hammer2/hammer2_ioctl.c    |  6 +++++
 sys/vfs/hammer2/hammer2_strategy.c | 37 +++++++++++++++++++++++++++
 sys/vfs/hammer2/hammer2_xops.c     | 51 ++++++++++++++++++++++++++++++++++++++
 7 files changed, 109 insertions(+), 2 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/bd41e746e6b77eb2be2d92ce1a71fad590fb3a33


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