| Message ID | 20241206221801.790690-2-kbusch@meta.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | block write streams with nvme fdp | expand |
On 12/6/24 23:17, Keith Busch wrote: > From: Keith Busch <kbusch@kernel.org> > > Add new statx field to report the maximum number of write streams > supported and the granularity for them. > > Signed-off-by: Keith Busch <kbusch@kernel.org> > [hch: rename hint to stream, add granularity] > Signed-off-by: Christoph Hellwig <hch@lst.de> > --- > fs/stat.c | 2 ++ > include/linux/stat.h | 2 ++ > include/uapi/linux/stat.h | 7 +++++-- > 3 files changed, 9 insertions(+), 2 deletions(-) > Reviewed-by: Hannes Reinecke <hare@suse.de> Cheers, Hannes
On 06/12/24 02:17PM, Keith Busch wrote: >From: Keith Busch <kbusch@kernel.org> > >Add new statx field to report the maximum number of write streams >supported and the granularity for them. > >Signed-off-by: Keith Busch <kbusch@kernel.org> >[hch: rename hint to stream, add granularity] >Signed-off-by: Christoph Hellwig <hch@lst.de> >--- > fs/stat.c | 2 ++ > include/linux/stat.h | 2 ++ > include/uapi/linux/stat.h | 7 +++++-- > 3 files changed, 9 insertions(+), 2 deletions(-) > Reviewed-by: Nitesh Shetty <nj.shetty@samsung.com>
diff --git a/fs/stat.c b/fs/stat.c index 0870e969a8a0b..00e4598b1ff25 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -729,6 +729,8 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer) tmp.stx_atomic_write_unit_min = stat->atomic_write_unit_min; tmp.stx_atomic_write_unit_max = stat->atomic_write_unit_max; tmp.stx_atomic_write_segments_max = stat->atomic_write_segments_max; + tmp.stx_write_stream_granularity = stat->write_stream_granularity; + tmp.stx_write_stream_max = stat->write_stream_max; return copy_to_user(buffer, &tmp, sizeof(tmp)) ? -EFAULT : 0; } diff --git a/include/linux/stat.h b/include/linux/stat.h index 3d900c86981c5..36d4dfb291abd 100644 --- a/include/linux/stat.h +++ b/include/linux/stat.h @@ -57,6 +57,8 @@ struct kstat { u32 atomic_write_unit_min; u32 atomic_write_unit_max; u32 atomic_write_segments_max; + u32 write_stream_granularity; + u16 write_stream_max; }; /* These definitions are internal to the kernel for now. Mainly used by nfsd. */ diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h index 887a252864416..547c62a1a3a7c 100644 --- a/include/uapi/linux/stat.h +++ b/include/uapi/linux/stat.h @@ -132,9 +132,11 @@ struct statx { __u32 stx_atomic_write_unit_max; /* Max atomic write unit in bytes */ /* 0xb0 */ __u32 stx_atomic_write_segments_max; /* Max atomic write segment count */ - __u32 __spare1[1]; + __u32 stx_write_stream_granularity; /* 0xb8 */ - __u64 __spare3[9]; /* Spare space for future expansion */ + __u16 stx_write_stream_max; + __u16 __sparse2[3]; + __u64 __spare3[8]; /* Spare space for future expansion */ /* 0x100 */ }; @@ -164,6 +166,7 @@ struct statx { #define STATX_MNT_ID_UNIQUE 0x00004000U /* Want/got extended stx_mount_id */ #define STATX_SUBVOL 0x00008000U /* Want/got stx_subvol */ #define STATX_WRITE_ATOMIC 0x00010000U /* Want/got atomic_write_* fields */ +#define STATX_WRITE_STREAM 0x00020000U /* Want/got write_stream_* */ #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */