diff options
| author | Mark Brown <broonie@kernel.org> | 2015-10-12 18:09:27 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-10-12 18:09:27 +0100 |
| commit | 79828b4fa835f73cdaf4bffa48696abdcbea9d02 (patch) | |
| tree | 5e0fa7156acb75ba603022bc807df8f2fedb97a8 /include/linux/f2fs_fs.h | |
| parent | 721b51fcf91898299d96f4b72cb9434cda29dce6 (diff) | |
| parent | 8c1a9d6323abf0fb1e5dad96cf3f1c783505ea5a (diff) | |
Merge remote-tracking branch 'asoc/fix/rt5645' into asoc-fix-rt5645
Diffstat (limited to 'include/linux/f2fs_fs.h')
| -rw-r--r-- | include/linux/f2fs_fs.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h index 920408a21ffd..25c6324a0dd0 100644 --- a/include/linux/f2fs_fs.h +++ b/include/linux/f2fs_fs.h @@ -417,15 +417,25 @@ typedef __le32 f2fs_hash_t; #define GET_DENTRY_SLOTS(x) ((x + F2FS_SLOT_LEN - 1) >> F2FS_SLOT_LEN_BITS) -/* the number of dentry in a block */ -#define NR_DENTRY_IN_BLOCK 214 - /* MAX level for dir lookup */ #define MAX_DIR_HASH_DEPTH 63 /* MAX buckets in one level of dir */ #define MAX_DIR_BUCKETS (1 << ((MAX_DIR_HASH_DEPTH / 2) - 1)) +/* + * space utilization of regular dentry and inline dentry + * regular dentry inline dentry + * bitmap 1 * 27 = 27 1 * 23 = 23 + * reserved 1 * 3 = 3 1 * 7 = 7 + * dentry 11 * 214 = 2354 11 * 182 = 2002 + * filename 8 * 214 = 1712 8 * 182 = 1456 + * total 4096 3488 + * + * Note: there are more reserved space in inline dentry than in regular + * dentry, when converting inline dentry we should handle this carefully. + */ +#define NR_DENTRY_IN_BLOCK 214 /* the number of dentry in a block */ #define SIZE_OF_DIR_ENTRY 11 /* by byte */ #define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \ BITS_PER_BYTE) |