On Wednesday, March 18, 2020 12:27 AM Christoph Hellwig wrote:
> Add a new wrapper to check if a file system supports the v3 inode format
> with a larger dinode core. Previously we used xfs_sb_version_hascrc for
> that, which is technically correct but a little confusing to read.
>
> Also move xfs_dinode_good_version next to xfs_sb_version_has_v3inode
> so that we have one place that documents the superblock version to
> inode version relationship.
>
The changes look good to me,
Reviewed-by: Chandan Rajendra <chandanrlinux@xxxxxxxxx>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> fs/xfs/libxfs/xfs_format.h | 17 +++++++++++++++++
> fs/xfs/libxfs/xfs_ialloc.c | 4 ++--
> fs/xfs/libxfs/xfs_inode_buf.c | 17 +++--------------
> fs/xfs/libxfs/xfs_inode_buf.h | 2 --
> fs/xfs/libxfs/xfs_trans_resv.c | 2 +-
> fs/xfs/xfs_buf_item.c | 2 +-
> fs/xfs/xfs_log_recover.c | 2 +-
> 7 files changed, 25 insertions(+), 21 deletions(-)
>
> diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
> index cd814f99da28..19899d48517c 100644
> --- a/fs/xfs/libxfs/xfs_format.h
> +++ b/fs/xfs/libxfs/xfs_format.h
> @@ -497,6 +497,23 @@ static inline bool xfs_sb_version_hascrc(struct xfs_sb *sbp)
> return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
> }
>
> +/*
> + * v5 file systems support V3 inodes only, earlier file systems support
> + * v2 and v1 inodes.
> + */
> +static inline bool xfs_sb_version_has_v3inode(struct xfs_sb *sbp)
> +{
> + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
> +}
> +
> +static inline bool xfs_dinode_good_version(struct xfs_sb *sbp,
> + uint8_t version)
> +{
> + if (xfs_sb_version_has_v3inode(sbp))
> + return version == 3;
> + return version == 1 || version == 2;
> +}
> +
> static inline bool xfs_sb_version_has_pquotino(struct xfs_sb *sbp)
> {
> return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5;
> diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
> index 21ac3fb52f4e..4de61af3b840 100644
> --- a/fs/xfs/libxfs/xfs_ialloc.c
> +++ b/fs/xfs/libxfs/xfs_ialloc.c
> @@ -304,7 +304,7 @@ xfs_ialloc_inode_init(
> * That means for v3 inode we log the entire buffer rather than just the
> * inode cores.
> */
> - if (xfs_sb_version_hascrc(&mp->m_sb)) {
> + if (xfs_sb_version_has_v3inode(&mp->m_sb)) {
> version = 3;
> ino = XFS_AGINO_TO_INO(mp, agno, XFS_AGB_TO_AGINO(mp, agbno));
>
> @@ -2872,7 +2872,7 @@ xfs_ialloc_setup_geometry(
> * cannot change the behavior.
> */
> igeo->inode_cluster_size_raw = XFS_INODE_BIG_CLUSTER_SIZE;
> - if (xfs_sb_version_hascrc(&mp->m_sb)) {
> + if (xfs_sb_version_has_v3inode(&mp->m_sb)) {
> int new_size = igeo->inode_cluster_size_raw;
>
> new_size *= mp->m_sb.sb_inodesize / XFS_DINODE_MIN_SIZE;
> diff --git a/fs/xfs/libxfs/xfs_inode_buf.c b/fs/xfs/libxfs/xfs_inode_buf.c
> index 17e88a8c8353..c862c8f1aaa9 100644
> --- a/fs/xfs/libxfs/xfs_inode_buf.c
> +++ b/fs/xfs/libxfs/xfs_inode_buf.c
> @@ -44,17 +44,6 @@ xfs_inobp_check(
> }
> #endif
>
> -bool
> -xfs_dinode_good_version(
> - struct xfs_mount *mp,
> - __u8 version)
> -{
> - if (xfs_sb_version_hascrc(&mp->m_sb))
> - return version == 3;
> -
> - return version == 1 || version == 2;
> -}
> -
> /*
> * If we are doing readahead on an inode buffer, we might be in log recovery
> * reading an inode allocation buffer that hasn't yet been replayed, and hence
> @@ -93,7 +82,7 @@ xfs_inode_buf_verify(
> dip = xfs_buf_offset(bp, (i << mp->m_sb.sb_inodelog));
> unlinked_ino = be32_to_cpu(dip->di_next_unlinked);
> di_ok = xfs_verify_magic16(bp, dip->di_magic) &&
> - xfs_dinode_good_version(mp, dip->di_version) &&
> + xfs_dinode_good_version(&mp->m_sb, dip->di_version) &&
> xfs_verify_agino_or_null(mp, agno, unlinked_ino);
> if (unlikely(XFS_TEST_ERROR(!di_ok, mp,
> XFS_ERRTAG_ITOBP_INOTOBP))) {
> @@ -454,7 +443,7 @@ xfs_dinode_verify(
>
> /* Verify v3 integrity information first */
> if (dip->di_version >= 3) {
> - if (!xfs_sb_version_hascrc(&mp->m_sb))
> + if (!xfs_sb_version_has_v3inode(&mp->m_sb))
> return __this_address;
> if (!xfs_verify_cksum((char *)dip, mp->m_sb.sb_inodesize,
> XFS_DINODE_CRC_OFF))
> @@ -629,7 +618,7 @@ xfs_iread(
>
> /* shortcut IO on inode allocation if possible */
> if ((iget_flags & XFS_IGET_CREATE) &&
> - xfs_sb_version_hascrc(&mp->m_sb) &&
> + xfs_sb_version_has_v3inode(&mp->m_sb) &&
> !(mp->m_flags & XFS_MOUNT_IKEEP)) {
> VFS_I(ip)->i_generation = prandom_u32();
> ip->i_d.di_version = 3;
> diff --git a/fs/xfs/libxfs/xfs_inode_buf.h b/fs/xfs/libxfs/xfs_inode_buf.h
> index 2683e1e2c4a6..66de5964045c 100644
> --- a/fs/xfs/libxfs/xfs_inode_buf.h
> +++ b/fs/xfs/libxfs/xfs_inode_buf.h
> @@ -59,8 +59,6 @@ void xfs_inode_from_disk(struct xfs_inode *ip, struct xfs_dinode *from);
> void xfs_log_dinode_to_disk(struct xfs_log_dinode *from,
> struct xfs_dinode *to);
>
> -bool xfs_dinode_good_version(struct xfs_mount *mp, __u8 version);
> -
> #if defined(DEBUG)
> void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
> #else
> diff --git a/fs/xfs/libxfs/xfs_trans_resv.c b/fs/xfs/libxfs/xfs_trans_resv.c
> index 7a9c04920505..d1a0848cb52e 100644
> --- a/fs/xfs/libxfs/xfs_trans_resv.c
> +++ b/fs/xfs/libxfs/xfs_trans_resv.c
> @@ -187,7 +187,7 @@ xfs_calc_inode_chunk_res(
> XFS_FSB_TO_B(mp, 1));
> if (alloc) {
> /* icreate tx uses ordered buffers */
> - if (xfs_sb_version_hascrc(&mp->m_sb))
> + if (xfs_sb_version_has_v3inode(&mp->m_sb))
> return res;
> size = XFS_FSB_TO_B(mp, 1);
> }
> diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
> index 663810e6cd59..1545657c3ca0 100644
> --- a/fs/xfs/xfs_buf_item.c
> +++ b/fs/xfs/xfs_buf_item.c
> @@ -345,7 +345,7 @@ xfs_buf_item_format(
> * occurs during recovery.
> */
> if (bip->bli_flags & XFS_BLI_INODE_BUF) {
> - if (xfs_sb_version_hascrc(&lip->li_mountp->m_sb) ||
> + if (xfs_sb_version_has_v3inode(&lip->li_mountp->m_sb) ||
> !((bip->bli_flags & XFS_BLI_INODE_ALLOC_BUF) &&
> xfs_log_item_in_current_chkpt(lip)))
> bip->__bli_format.blf_flags |= XFS_BLF_INODE_BUF;
> diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
> index 6abc0863c9c3..c467488212c2 100644
> --- a/fs/xfs/xfs_log_recover.c
> +++ b/fs/xfs/xfs_log_recover.c
> @@ -2997,7 +2997,7 @@ xlog_recover_inode_pass2(
> * superblock flag to determine whether we need to look at di_flushiter
> * to skip replay when the on disk inode is newer than the log one
> */
> - if (!xfs_sb_version_hascrc(&mp->m_sb) &&
> + if (!xfs_sb_version_has_v3inode(&mp->m_sb) &&
> ldip->di_flushiter < be16_to_cpu(dip->di_flushiter)) {
> /*
> * Deal with the wrap case, DI_MAX_FLUSH is less
>
--
chandan
