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| author | Theodore Ts'o <tytso@mit.edu> | 2009-03-05 01:31:53 +0100 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-03-05 01:31:53 +0100 |
| commit | 7d39db14a42cbd719c7515b9da8f85a2eb6a0633 (patch) | |
| tree | 5c93b9f76c9895183d1e973ed296cd9b7a1d9a0e /fs/ext4/ext4.h | |
| parent | ext4: Use atomic_t's in struct flex_groups (diff) | |
| download | linux-7d39db14a42cbd719c7515b9da8f85a2eb6a0633.tar.xz linux-7d39db14a42cbd719c7515b9da8f85a2eb6a0633.zip | |
ext4: Use struct flex_groups to calculate get_orlov_stats()
Instead of looping over all of the block groups in a flex group
summing their summary statistics, start tracking used_dirs in struct
flex_groups, and use struct flex_groups instead. This should save a
bit of CPU for mkdir-heavy workloads.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index e52b48f86ed4..46aaaa2ed4c5 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -172,6 +172,7 @@ struct ext4_group_desc struct flex_groups { atomic_t free_inodes; atomic_t free_blocks; + atomic_t used_dirs; }; #define EXT4_BG_INODE_UNINIT 0x0001 /* Inode table/bitmap not in use */ |