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authorJoern Engel <joern@logfs.org>2010-03-04 21:30:58 +0100
committerJoern Engel <joern@logfs.org>2010-03-04 21:30:58 +0100
commit9421502b4fc894cc477be8fc49776830e37ca157 (patch)
tree9c9b1bfa42b2acdf4b5e080a256c3cd37852a94f /fs/logfs/segment.c
parent5c564c2a04d4bb6ba79eeb83bd06de584479f362 (diff)
[LogFS] Fix bdev erases
Erases for block devices were always just emulated by writing 0xff. Some time back the write was removed and only the page cache was changed to 0xff. Superficialy a good idea with two problems: 1. Touching the page cache isn't necessary either. 2. However, writing out 0xff _is_ necessary for the journal. As the journal is scanned linearly, an old non-overwritten commit entry can be used on next mount and cause havoc. This should fix both aspects.
Diffstat (limited to 'fs/logfs/segment.c')
-rw-r--r--fs/logfs/segment.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/logfs/segment.c b/fs/logfs/segment.c
index 5f58b74516c..664cd0dd357 100644
--- a/fs/logfs/segment.c
+++ b/fs/logfs/segment.c
@@ -25,14 +25,14 @@ static int logfs_mark_segment_bad(struct super_block *sb, u32 segno)
return 0;
}
-int logfs_erase_segment(struct super_block *sb, u32 segno)
+int logfs_erase_segment(struct super_block *sb, u32 segno, int ensure_erase)
{
struct logfs_super *super = logfs_super(sb);
super->s_gec++;
return super->s_devops->erase(sb, (u64)segno << super->s_segshift,
- super->s_segsize);
+ super->s_segsize, ensure_erase);
}
static s64 logfs_get_free_bytes(struct logfs_area *area, size_t bytes)
@@ -798,7 +798,7 @@ static int ostore_erase_segment(struct logfs_area *area)
u64 ofs;
int err;
- err = logfs_erase_segment(sb, area->a_segno);
+ err = logfs_erase_segment(sb, area->a_segno, 0);
if (err)
return err;