diff options
| author | Jens Axboe <axboe@kernel.dk> | 2013-02-20 08:26:06 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-02-20 08:26:06 +0100 |
| commit | d4308febf3551d46884561b7c3fdd62ad3ca7ff2 (patch) | |
| tree | b8c48122df7c36761c6fb5d70647a09605892b9f /fs/btrfs/extent_map.c | |
| parent | c206c70924737db6836382c09ad2dacd04bb6204 (diff) | |
| parent | 087ffecdaa1875cc683a7a5bc0695b3ebfce3bad (diff) | |
Merge branch 'stable/for-jens-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into for-3.9/drivers
Konrad writes:
Please git pull the following branch:
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen.git stable/for-jens-3.9
which has bug-fixes that did not make it in v3.8. They all are marked as
material for the stable tree as well. There are two bug-fixes for
the code that has been in there for some time (that is the Jan's fix
and one of mine). And there are two bug-fixes for the persistent grant
feature that debuted in v3.8 for xen blk[back|front]end.
Diffstat (limited to 'fs/btrfs/extent_map.c')
| -rw-r--r-- | fs/btrfs/extent_map.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index f169d6b11d7..fdb7a8db3b5 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -171,6 +171,10 @@ static int mergable_maps(struct extent_map *prev, struct extent_map *next) if (test_bit(EXTENT_FLAG_COMPRESSED, &prev->flags)) return 0; + if (test_bit(EXTENT_FLAG_LOGGING, &prev->flags) || + test_bit(EXTENT_FLAG_LOGGING, &next->flags)) + return 0; + if (extent_map_end(prev) == next->start && prev->flags == next->flags && prev->bdev == next->bdev && @@ -255,7 +259,8 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len, if (!em) goto out; - list_move(&em->list, &tree->modified_extents); + if (!test_bit(EXTENT_FLAG_LOGGING, &em->flags)) + list_move(&em->list, &tree->modified_extents); em->generation = gen; clear_bit(EXTENT_FLAG_PINNED, &em->flags); em->mod_start = em->start; @@ -280,6 +285,13 @@ out: } +void clear_em_logging(struct extent_map_tree *tree, struct extent_map *em) +{ + clear_bit(EXTENT_FLAG_LOGGING, &em->flags); + if (em->in_tree) + try_merge_map(tree, em); +} + /** * add_extent_mapping - add new extent map to the extent tree * @tree: tree to insert new map in |