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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2020-03-11 10:42:34 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-03-18 08:12:23 -0700 |
| commit | 349e1c0380dbb7f552e4ea61b479c293eb076b3f (patch) | |
| tree | b14c7502753d7ff2d5649c18374fab1d2c88a9d4 /fs/xfs/libxfs/xfs_btree.h | |
| parent | e06536a692e032470130af5b2136b519595809da (diff) | |
| download | linux-stable-349e1c0380dbb7f552e4ea61b479c293eb076b3f.tar.gz linux-stable-349e1c0380dbb7f552e4ea61b479c293eb076b3f.tar.bz2 linux-stable-349e1c0380dbb7f552e4ea61b479c293eb076b3f.zip | |
xfs: introduce fake roots for inode-rooted btrees
Create an in-core fake root for inode-rooted btree types so that callers
can generate a whole new btree using the upcoming btree bulk load
function without making the new tree accessible from the rest of the
filesystem. It is up to the individual btree type to provide a function
to create a staged cursor (presumably with the appropriate callouts to
update the fakeroot) and then commit the staged root back into the
filesystem.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index d6e201ff4027..69a76a0da5d0 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -10,6 +10,7 @@ struct xfs_buf; struct xfs_inode; struct xfs_mount; struct xfs_trans; +struct xfs_ifork; extern kmem_zone_t *xfs_btree_cur_zone; @@ -198,6 +199,7 @@ struct xfs_btree_cur_ag { /* Btree-in-inode cursor information */ struct xfs_btree_cur_ino { struct xfs_inode *ip; + struct xbtree_ifakeroot *ifake; /* for staging cursor */ int allocated; short forksize; char whichfork; @@ -509,6 +511,7 @@ union xfs_btree_key *xfs_btree_high_key_from_key(struct xfs_btree_cur *cur, int xfs_btree_has_record(struct xfs_btree_cur *cur, union xfs_btree_irec *low, union xfs_btree_irec *high, bool *exists); bool xfs_btree_has_more_records(struct xfs_btree_cur *cur); +struct xfs_ifork *xfs_btree_ifork_ptr(struct xfs_btree_cur *cur); /* Does this cursor point to the last block in the given level? */ static inline bool |