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| author | James Morris <jmorris@namei.org> | 2008-08-28 04:47:34 +0400 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-08-28 04:47:34 +0400 |
| commit | 86d688984deefa3ae5a802880c11f2b408b5d6cf (patch) | |
| tree | 7ea5e8189b0a774626d3ed7c3c87df2495a4c4a0 /fs/ext4/mballoc.h | |
| parent | 93c06cbbf9fea5d5be1778febb7fa9ab1a74e5f5 (diff) | |
| parent | 4c246edd2550304df5b766cc841584b2bb058843 (diff) | |
| download | linux-86d688984deefa3ae5a802880c11f2b408b5d6cf.tar.xz | |
Merge branch 'master' into next
Diffstat (limited to 'fs/ext4/mballoc.h')
| -rw-r--r-- | fs/ext4/mballoc.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h index bfe6add46bcf..c7c9906c2a75 100644 --- a/fs/ext4/mballoc.h +++ b/fs/ext4/mballoc.h @@ -164,11 +164,17 @@ struct ext4_free_extent { * Locality group: * we try to group all related changes together * so that writeback can flush/allocate them together as well + * Size of lg_prealloc_list hash is determined by MB_DEFAULT_GROUP_PREALLOC + * (512). We store prealloc space into the hash based on the pa_free blocks + * order value.ie, fls(pa_free)-1; */ +#define PREALLOC_TB_SIZE 10 struct ext4_locality_group { /* for allocator */ - struct mutex lg_mutex; /* to serialize allocates */ - struct list_head lg_prealloc_list;/* list of preallocations */ + /* to serialize allocates */ + struct mutex lg_mutex; + /* list of preallocations */ + struct list_head lg_prealloc_list[PREALLOC_TB_SIZE]; spinlock_t lg_prealloc_lock; }; |