| Message ID | 161723935477.3149451.5072642258685986580.stgit@magnolia (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | xfs: atomic file updates | expand |
On 3/31/21 6:09 PM, Darrick J. Wong wrote: > From: Darrick J. Wong <djwong@kernel.org> > > Create a log incompat flag so that we only attempt to process swap > extent log items if the filesystem supports it. > > Signed-off-by: Darrick J. Wong <djwong@kernel.org> looks ok Reviewed-by: Allison Henderson <allison.henderson@oracle.com> > --- > fs/xfs/libxfs/xfs_format.h | 20 ++++++++++++++++++++ > fs/xfs/libxfs/xfs_fs.h | 1 + > fs/xfs/libxfs/xfs_sb.c | 2 ++ > 3 files changed, 23 insertions(+) > > > diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h > index 7e9c964772c9..e81a7b12a0e3 100644 > --- a/fs/xfs/libxfs/xfs_format.h > +++ b/fs/xfs/libxfs/xfs_format.h > @@ -485,6 +485,7 @@ xfs_sb_has_incompat_feature( > return (sbp->sb_features_incompat & feature) != 0; > } > > +#define XFS_SB_FEAT_INCOMPAT_LOG_ATOMIC_SWAP (1 << 0) > #define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0 > #define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL > static inline bool > @@ -607,6 +608,25 @@ static inline bool xfs_sb_version_needsrepair(struct xfs_sb *sbp) > (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR); > } > > +/* > + * Decide if this filesystem can use log-assisted ("atomic") extent swapping. > + * The atomic swap log intent items depend on the block mapping log intent > + * items introduced with reflink and rmap. Realtime is not supported yet. > + */ > +static inline bool xfs_sb_version_canatomicswap(struct xfs_sb *sbp) > +{ > + return (xfs_sb_version_hasreflink(sbp) || > + xfs_sb_version_hasrmapbt(sbp)) && > + !xfs_sb_version_hasrealtime(sbp); > +} > + > +static inline bool xfs_sb_version_hasatomicswap(struct xfs_sb *sbp) > +{ > + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && > + (sbp->sb_features_log_incompat & > + XFS_SB_FEAT_INCOMPAT_LOG_ATOMIC_SWAP); > +} > + > /* > * end of superblock version macros > */ > diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h > index e7e1e3051739..08bfce39407e 100644 > --- a/fs/xfs/libxfs/xfs_fs.h > +++ b/fs/xfs/libxfs/xfs_fs.h > @@ -252,6 +252,7 @@ typedef struct xfs_fsop_resblks { > #define XFS_FSOP_GEOM_FLAGS_REFLINK (1 << 20) /* files can share blocks */ > #define XFS_FSOP_GEOM_FLAGS_BIGTIME (1 << 21) /* 64-bit nsec timestamps */ > #define XFS_FSOP_GEOM_FLAGS_INOBTCNT (1 << 22) /* inobt btree counter */ > +#define XFS_FSOP_GEOM_FLAGS_ATOMIC_SWAP (1 << 23) /* atomic swapext */ > > /* > * Minimum and maximum sizes need for growth checks. > diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c > index 6adfe759190c..52791fe33a6e 100644 > --- a/fs/xfs/libxfs/xfs_sb.c > +++ b/fs/xfs/libxfs/xfs_sb.c > @@ -1140,6 +1140,8 @@ xfs_fs_geometry( > geo->flags |= XFS_FSOP_GEOM_FLAGS_BIGTIME; > if (xfs_sb_version_hasinobtcounts(sbp)) > geo->flags |= XFS_FSOP_GEOM_FLAGS_INOBTCNT; > + if (xfs_sb_version_canatomicswap(sbp)) > + geo->flags |= XFS_FSOP_GEOM_FLAGS_ATOMIC_SWAP; > if (xfs_sb_version_hassector(sbp)) > geo->logsectsize = sbp->sb_logsectsize; > else >
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h index 7e9c964772c9..e81a7b12a0e3 100644 --- a/fs/xfs/libxfs/xfs_format.h +++ b/fs/xfs/libxfs/xfs_format.h @@ -485,6 +485,7 @@ xfs_sb_has_incompat_feature( return (sbp->sb_features_incompat & feature) != 0; } +#define XFS_SB_FEAT_INCOMPAT_LOG_ATOMIC_SWAP (1 << 0) #define XFS_SB_FEAT_INCOMPAT_LOG_ALL 0 #define XFS_SB_FEAT_INCOMPAT_LOG_UNKNOWN ~XFS_SB_FEAT_INCOMPAT_LOG_ALL static inline bool @@ -607,6 +608,25 @@ static inline bool xfs_sb_version_needsrepair(struct xfs_sb *sbp) (sbp->sb_features_incompat & XFS_SB_FEAT_INCOMPAT_NEEDSREPAIR); } +/* + * Decide if this filesystem can use log-assisted ("atomic") extent swapping. + * The atomic swap log intent items depend on the block mapping log intent + * items introduced with reflink and rmap. Realtime is not supported yet. + */ +static inline bool xfs_sb_version_canatomicswap(struct xfs_sb *sbp) +{ + return (xfs_sb_version_hasreflink(sbp) || + xfs_sb_version_hasrmapbt(sbp)) && + !xfs_sb_version_hasrealtime(sbp); +} + +static inline bool xfs_sb_version_hasatomicswap(struct xfs_sb *sbp) +{ + return XFS_SB_VERSION_NUM(sbp) == XFS_SB_VERSION_5 && + (sbp->sb_features_log_incompat & + XFS_SB_FEAT_INCOMPAT_LOG_ATOMIC_SWAP); +} + /* * end of superblock version macros */ diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index e7e1e3051739..08bfce39407e 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -252,6 +252,7 @@ typedef struct xfs_fsop_resblks { #define XFS_FSOP_GEOM_FLAGS_REFLINK (1 << 20) /* files can share blocks */ #define XFS_FSOP_GEOM_FLAGS_BIGTIME (1 << 21) /* 64-bit nsec timestamps */ #define XFS_FSOP_GEOM_FLAGS_INOBTCNT (1 << 22) /* inobt btree counter */ +#define XFS_FSOP_GEOM_FLAGS_ATOMIC_SWAP (1 << 23) /* atomic swapext */ /* * Minimum and maximum sizes need for growth checks. diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c index 6adfe759190c..52791fe33a6e 100644 --- a/fs/xfs/libxfs/xfs_sb.c +++ b/fs/xfs/libxfs/xfs_sb.c @@ -1140,6 +1140,8 @@ xfs_fs_geometry( geo->flags |= XFS_FSOP_GEOM_FLAGS_BIGTIME; if (xfs_sb_version_hasinobtcounts(sbp)) geo->flags |= XFS_FSOP_GEOM_FLAGS_INOBTCNT; + if (xfs_sb_version_canatomicswap(sbp)) + geo->flags |= XFS_FSOP_GEOM_FLAGS_ATOMIC_SWAP; if (xfs_sb_version_hassector(sbp)) geo->logsectsize = sbp->sb_logsectsize; else