ocfs2: use allocation reservations during file write

Add a per-inode reservations structure and pass it through to the
reservations code.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>

6 files changed, 16 insertions, 0 deletions

diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 89e994dad026..a74ea700ffdc 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -7211,6 +7211,8 @@ int ocfs2_convert_inline_data_to_extents(struct inode *inode,
                         goto out_commit;
                 did_quota = 1;
 
+                data_ac->ac_resv = &OCFS2_I(inode)->ip_la_data_resv;
+
                 ret = ocfs2_claim_clusters(osb, handle, data_ac, 1, &bit_off,
                                            &num);
                 if (ret) {
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 21441ddb5506..3623ca20cc18 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -1735,6 +1735,9 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
                         goto out;
                 }
 
+                if (data_ac)
+                        data_ac->ac_resv = &OCFS2_I(inode)->ip_la_data_resv;
+
                 credits = ocfs2_calc_extend_credits(inode->i_sb,
                                                     &di->id2.i_list,
                                                     clusters_to_alloc);
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index e6e8281628a6..19d16f2ef81e 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -483,6 +483,9 @@ static int ocfs2_truncate_file(struct inode *inode,
 
         down_write(&OCFS2_I(inode)->ip_alloc_sem);
 
+        ocfs2_resv_discard(&osb->osb_la_resmap,
+                           &OCFS2_I(inode)->ip_la_data_resv);
+
         /*
          * The inode lock forced other nodes to sync and drop their
          * pages, which (correctly) happens even if we have a truncate
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 7cc0b4665d5e..62b4743fb6f1 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -1096,6 +1096,10 @@ void ocfs2_clear_inode(struct inode *inode)
         ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres);
         ocfs2_mark_lockres_freeing(&oi->ip_open_lockres);
 
+        ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap,
+                           &oi->ip_la_data_resv);
+        ocfs2_resv_init_once(&oi->ip_la_data_resv);
+
         /* We very well may get a clear_inode before all an inodes
          * metadata has hit disk. Of course, we can't drop any cluster
          * locks until the journal has finished with it. The only
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index ba4fe07b293c..e45edca02594 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -70,6 +70,8 @@ struct ocfs2_inode_info
         /* Only valid if the inode is the dir. */
         u32                             ip_last_used_slot;
         u64                             ip_last_used_group;
+
+        struct ocfs2_alloc_reservation  ip_la_data_resv;
 };
 
 /*
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index cfe672e72b27..2a9f4c455f28 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1707,6 +1707,8 @@ static void ocfs2_inode_init_once(void *data)
         oi->ip_blkno = 0ULL;
         oi->ip_clusters = 0;
 
+        ocfs2_resv_init_once(&oi->ip_la_data_resv);
+
         ocfs2_lock_res_init_once(&oi->ip_rw_lockres);
         ocfs2_lock_res_init_once(&oi->ip_inode_lockres);
         ocfs2_lock_res_init_once(&oi->ip_open_lockres);