Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (22 commits)
  nilfs2: support contiguous lookup of blocks
  nilfs2: add sync_page method to page caches of meta data
  nilfs2: use device's backing_dev_info for btree node caches
  nilfs2: return EBUSY against delete request on snapshot
  nilfs2: modify list of unsupported features in caveats
  nilfs2: enable sync_page method
  nilfs2: set bio unplug flag for the last bio in segment
  nilfs2: allow future expansion of metadata read out via get info ioctl
  NILFS2: Pagecache usage optimization on NILFS2
  nilfs2: remove nilfs_btree_operations from btree mapping
  nilfs2: remove nilfs_direct_operations from direct mapping
  nilfs2: remove bmap pointer operations
  nilfs2: remove useless b_low and b_high fields from nilfs_bmap struct
  nilfs2: remove pointless NULL check of bpop_commit_alloc_ptr function
  nilfs2: move get block functions in bmap.c into btree codes
  nilfs2: remove nilfs_bmap_delete_block
  nilfs2: remove nilfs_bmap_put_block
  nilfs2: remove header file for segment list operations
  nilfs2: eliminate removal list of segments
  nilfs2: add sufile function that can modify multiple segment usages
  ...

1 files changed, 24 insertions, 13 deletions

diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
index 57afa9d24061..d80cc71be749 100644
--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -28,7 +28,6 @@
 #include "segment.h"
 #include "sufile.h"
 #include "page.h"
-#include "seglist.h"
 #include "segbuf.h"
 
 /*
@@ -395,6 +394,24 @@ static void dispose_recovery_list(struct list_head *head)
 	}
 }
 
+struct nilfs_segment_entry {
+	struct list_head	list;
+	__u64			segnum;
+};
+
+static int nilfs_segment_list_add(struct list_head *head, __u64 segnum)
+{
+	struct nilfs_segment_entry *ent = kmalloc(sizeof(*ent), GFP_NOFS);
+
+	if (unlikely(!ent))
+		return -ENOMEM;
+
+	ent->segnum = segnum;
+	INIT_LIST_HEAD(&ent->list);
+	list_add_tail(&ent->list, head);
+	return 0;
+}
+
 void nilfs_dispose_segment_list(struct list_head *head)
 {
 	while (!list_empty(head)) {
@@ -402,7 +419,7 @@ void nilfs_dispose_segment_list(struct list_head *head)
 			= list_entry(head->next,
 				     struct nilfs_segment_entry, list);
 		list_del(&ent->list);
-		nilfs_free_segment_entry(ent);
+		kfree(ent);
 	}
 }
 
@@ -431,12 +448,10 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
 	if (unlikely(err))
 		goto failed;
 
-	err = -ENOMEM;
 	for (i = 1; i < 4; i++) {
-		ent = nilfs_alloc_segment_entry(segnum[i]);
-		if (unlikely(!ent))
+		err = nilfs_segment_list_add(head, segnum[i]);
+		if (unlikely(err))
 			goto failed;
-		list_add_tail(&ent->list, head);
 	}
 
 	/*
@@ -450,7 +465,7 @@ static int nilfs_prepare_segment_for_recovery(struct the_nilfs *nilfs,
 				goto failed;
 		}
 		list_del(&ent->list);
-		nilfs_free_segment_entry(ent);
+		kfree(ent);
 	}
 
 	/* Allocate new segments for recovery */
@@ -791,7 +806,6 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi,
 	u64 seg_seq;
 	__u64 segnum, nextnum = 0;
 	__u64 cno;
-	struct nilfs_segment_entry *ent;
 	LIST_HEAD(segments);
 	int empty_seg = 0, scan_newer = 0;
 	int ret;
@@ -892,12 +906,9 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi,
 		if (empty_seg++)
 			goto super_root_found; /* found a valid super root */
 
-		ent = nilfs_alloc_segment_entry(segnum);
-		if (unlikely(!ent)) {
-			ret = -ENOMEM;
+		ret = nilfs_segment_list_add(&segments, segnum);
+		if (unlikely(ret))
 			goto failed;
-		}
-		list_add_tail(&ent->list, &segments);
 
 		seg_seq++;
 		segnum = nextnum;