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xfs: add sparse inode chunk alignment superblock field

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Add sb_spino_align to the superblock to specify sparse inode chunk
alignment. This also currently represents the minimum allowable sparse
chunk allocation size.

Signed-off-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Brian Foster 2015-05-29 08:54:03 +10:00 • committed by Dave Chinner
parent bfe46d4eb9
commit fb4f2b4e5a
2 changed files with 4 additions and 4 deletions
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4
fs/xfs/libxfs/xfs_format.h
View file

@ -170,7 +170,7 @@ typedef struct xfs_sb {
__uint32_t sb_features_log_incompat; __uint32_t sb_features_log_incompat;
__uint32_t sb_crc; /* superblock crc */ __uint32_t sb_crc; /* superblock crc */
__uint32_t sb_pad; xfs_extlen_t sb_spino_align; /* sparse inode chunk alignment */
xfs_ino_t sb_pquotino; /* project quota inode */ xfs_ino_t sb_pquotino; /* project quota inode */
xfs_lsn_t sb_lsn; /* last write sequence */ xfs_lsn_t sb_lsn; /* last write sequence */
@ -256,7 +256,7 @@ typedef struct xfs_dsb {
__be32 sb_features_log_incompat; __be32 sb_features_log_incompat;
__le32 sb_crc; /* superblock crc */ __le32 sb_crc; /* superblock crc */
__be32 sb_pad; __be32 sb_spino_align; /* sparse inode chunk alignment */
__be64 sb_pquotino; /* project quota inode */ __be64 sb_pquotino; /* project quota inode */
__be64 sb_lsn; /* last write sequence */ __be64 sb_lsn; /* last write sequence */

4
fs/xfs/libxfs/xfs_sb.c
View file

@ -374,7 +374,7 @@ __xfs_sb_from_disk(
be32_to_cpu(from->sb_features_log_incompat); be32_to_cpu(from->sb_features_log_incompat);
/* crc is only used on disk, not in memory; just init to 0 here. */ /* crc is only used on disk, not in memory; just init to 0 here. */
to->sb_crc = 0; to->sb_crc = 0;
to->sb_pad = 0; to->sb_spino_align = be32_to_cpu(from->sb_spino_align);
to->sb_pquotino = be64_to_cpu(from->sb_pquotino); to->sb_pquotino = be64_to_cpu(from->sb_pquotino);
to->sb_lsn = be64_to_cpu(from->sb_lsn); to->sb_lsn = be64_to_cpu(from->sb_lsn);
/* Convert on-disk flags to in-memory flags? */ /* Convert on-disk flags to in-memory flags? */
@ -516,7 +516,7 @@ xfs_sb_to_disk(
cpu_to_be32(from->sb_features_incompat); cpu_to_be32(from->sb_features_incompat);
to->sb_features_log_incompat = to->sb_features_log_incompat =
cpu_to_be32(from->sb_features_log_incompat); cpu_to_be32(from->sb_features_log_incompat);
to->sb_pad = 0; to->sb_spino_align = cpu_to_be32(from->sb_spino_align);
to->sb_lsn = cpu_to_be64(from->sb_lsn); to->sb_lsn = cpu_to_be64(from->sb_lsn);
} }
} }