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author | Joel Becker <joel.becker@oracle.com> | 2009-02-13 02:50:12 -0800 |
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committer | Joel Becker <joel.becker@oracle.com> | 2009-09-04 16:08:03 -0700 |
commit | 4c911eefca316f580f174940cd67d561b4b7e6e8 (patch) | |
tree | 785ae90d5e2f0fe71c37aa39027c7144abab3d0c /fs/ocfs2/alloc.c | |
parent | 043beebb6c467a07ccd7aa666095f87fade1c28e (diff) | |
download | op-kernel-dev-4c911eefca316f580f174940cd67d561b4b7e6e8.zip op-kernel-dev-4c911eefca316f580f174940cd67d561b4b7e6e8.tar.gz |
ocfs2: Make truncating the extent map an extent_tree_operation.
ocfs2_remove_extent() wants to truncate the extent map if it's
truncating an inode data extent. But since many btrees can call that
function, let's make it an op on ocfs2_extent_tree. Other tree types
can leave it empty.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs/ocfs2/alloc.c')
-rw-r--r-- | fs/ocfs2/alloc.c | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 4022fa4..cdf9697 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -83,6 +83,13 @@ struct ocfs2_extent_tree_operations { u32 new_clusters); /* + * If this extent tree is supported by an extent map, truncate the + * map to clusters, + */ + void (*eo_extent_map_truncate)(struct ocfs2_extent_tree *et, + u32 clusters); + + /* * If ->eo_insert_check() exists, it is called before rec is * inserted into the extent tree. It is optional. */ @@ -120,6 +127,8 @@ static void ocfs2_dinode_set_last_eb_blk(struct ocfs2_extent_tree *et, u64 blkno); static void ocfs2_dinode_update_clusters(struct ocfs2_extent_tree *et, u32 clusters); +static void ocfs2_dinode_extent_map_truncate(struct ocfs2_extent_tree *et, + u32 clusters); static int ocfs2_dinode_insert_check(struct ocfs2_extent_tree *et, struct ocfs2_extent_rec *rec); static int ocfs2_dinode_sanity_check(struct ocfs2_extent_tree *et); @@ -128,6 +137,7 @@ static struct ocfs2_extent_tree_operations ocfs2_dinode_et_ops = { .eo_set_last_eb_blk = ocfs2_dinode_set_last_eb_blk, .eo_get_last_eb_blk = ocfs2_dinode_get_last_eb_blk, .eo_update_clusters = ocfs2_dinode_update_clusters, + .eo_extent_map_truncate = ocfs2_dinode_extent_map_truncate, .eo_insert_check = ocfs2_dinode_insert_check, .eo_sanity_check = ocfs2_dinode_sanity_check, .eo_fill_root_el = ocfs2_dinode_fill_root_el, @@ -162,6 +172,14 @@ static void ocfs2_dinode_update_clusters(struct ocfs2_extent_tree *et, spin_unlock(&oi->ip_lock); } +static void ocfs2_dinode_extent_map_truncate(struct ocfs2_extent_tree *et, + u32 clusters) +{ + struct inode *inode = &cache_info_to_inode(et->et_ci)->vfs_inode; + + ocfs2_extent_map_trunc(inode, clusters); +} + static int ocfs2_dinode_insert_check(struct ocfs2_extent_tree *et, struct ocfs2_extent_rec *rec) { @@ -400,6 +418,13 @@ static inline void ocfs2_et_update_clusters(struct ocfs2_extent_tree *et, et->et_ops->eo_update_clusters(et, clusters); } +static inline void ocfs2_et_extent_map_truncate(struct ocfs2_extent_tree *et, + u32 clusters) +{ + if (et->et_ops->eo_extent_map_truncate) + et->et_ops->eo_extent_map_truncate(et, clusters); +} + static inline int ocfs2_et_root_journal_access(handle_t *handle, struct ocfs2_extent_tree *et, int type) @@ -5106,12 +5131,8 @@ int ocfs2_mark_extent_written(struct inode *inode, /* * XXX: This should be fixed up so that we just re-insert the * next extent records. - * - * XXX: This is a hack on the extent tree, maybe it should be - * an op? */ - if (et->et_ops == &ocfs2_dinode_et_ops) - ocfs2_extent_map_trunc(inode, 0); + ocfs2_et_extent_map_truncate(et, 0); left_path = ocfs2_new_path_from_et(et); if (!left_path) { @@ -5393,7 +5414,11 @@ int ocfs2_remove_extent(struct inode *inode, struct ocfs2_extent_list *el; struct ocfs2_path *path = NULL; - ocfs2_extent_map_trunc(inode, 0); + /* + * XXX: Why are we truncating to 0 instead of wherever this + * affects us? + */ + ocfs2_et_extent_map_truncate(et, 0); path = ocfs2_new_path_from_et(et); if (!path) { |