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| author |   Chandan Babu R <chandan.babu@oracle.com> | 2022-03-08 09:34:28 +0000 |
|---|---|---|
| committer | Chandan Babu R <chandan.babu@oracle.com> | 2022-04-11 04:11:20 +0000 |
| commit | 52a4a14842ef940e5bab1c949e5adc8f027327dc (patch) | |
| tree | 48930332ce95f25798fc420f9b6c960cef0e93bd /fs/xfs/libxfs/xfs_log_format.h | |
| parent | xfs: Replace numbered inode recovery error messages with descriptive ones (diff) | |
| download | linux-dev-52a4a14842ef940e5bab1c949e5adc8f027327dc.tar.xz linux-dev-52a4a14842ef940e5bab1c949e5adc8f027327dc.zip | |
xfs: Introduce per-inode 64-bit extent counters
This commit introduces new fields in the on-disk inode format to support
64-bit data fork extent counters and 32-bit attribute fork extent
counters. The new fields will be used only when an inode has
XFS_DIFLAG2_NREXT64 flag set. Otherwise we continue to use the regular 32-bit
data fork extent counters and 16-bit attribute fork extent counters.
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>
Suggested-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_log_format.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_log_format.h | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/fs/xfs/libxfs/xfs_log_format.h b/fs/xfs/libxfs/xfs_log_format.h index fd66e70248f7..12234a880e94 100644 --- a/fs/xfs/libxfs/xfs_log_format.h +++ b/fs/xfs/libxfs/xfs_log_format.h @@ -388,16 +388,41 @@ struct xfs_log_dinode { uint32_t di_nlink; /* number of links to file */ uint16_t di_projid_lo; /* lower part of owner's project id */ uint16_t di_projid_hi; /* higher part of owner's project id */ - uint8_t di_pad[6]; /* unused, zeroed space */ - uint16_t di_flushiter; /* incremented on flush */ + union { + /* Number of data fork extents if NREXT64 is set */ + uint64_t di_big_nextents; + + /* Padding for V3 inodes without NREXT64 set. */ + uint64_t di_v3_pad; + + /* Padding and inode flush counter for V2 inodes. */ + struct { + uint8_t di_v2_pad[6]; /* V2 inode zeroed space */ + uint16_t di_flushiter; /* V2 inode incremented on flush */ + }; + }; xfs_log_timestamp_t di_atime; /* time last accessed */ xfs_log_timestamp_t di_mtime; /* time last modified */ xfs_log_timestamp_t di_ctime; /* time created/inode modified */ xfs_fsize_t di_size; /* number of bytes in file */ xfs_rfsblock_t di_nblocks; /* # of direct & btree blocks used */ xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ - uint32_t di_nextents; /* number of extents in data fork */ - uint16_t di_anextents; /* number of extents in attribute fork*/ + union { + /* + * For V2 inodes and V3 inodes without NREXT64 set, this + * is the number of data and attr fork extents. + */ + struct { + uint32_t di_nextents; + uint16_t di_anextents; + } __packed; + + /* Number of attr fork extents if NREXT64 is set. */ + struct { + uint32_t di_big_anextents; + uint16_t di_nrext64_pad; + } __packed; + } __packed; uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ int8_t di_aformat; /* format of attr fork's data */ uint32_t di_dmevmask; /* DMIG event mask */ |