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| author |   Harshad Shirwadkar <harshadshirwadkar@gmail.com> | 2020-10-26 21:49:14 -0700 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2020-10-28 13:42:03 -0400 |
| commit | e029c5f2798720b463e8df0e184a4d1036311b43 (patch) | |
| tree | 2e8d7688645f7c0ceba13986f7e8e622e583b322 /include/linux/jbd2.h | |
| parent | ext4: properly check for dirty state in ext4_inode_datasync_dirty() (diff) | |
| download | wireguard-linux-e029c5f2798720b463e8df0e184a4d1036311b43.tar.xz wireguard-linux-e029c5f2798720b463e8df0e184a4d1036311b43.zip | |
ext4: make num of fast commit blocks configurable
This patch reserves a field in the jbd2 superblock for number of fast
commit blocks. When this value is non-zero, Ext4 uses this field to
set the number of fast commit blocks.
Fixes: 6866d7b3f2bb ("ext4/jbd2: add fast commit initialization")
Signed-off-by: Harshad Shirwadkar <harshadshirwadkar@gmail.com>
Link: https://lore.kernel.org/r/20201027044915.2553163-2-harshadshirwadkar@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/jbd2.h')
| -rw-r--r-- | include/linux/jbd2.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index fb3d71ad6eea..7e88bbc16ffb 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -263,7 +263,10 @@ typedef struct journal_superblock_s /* 0x0050 */ __u8 s_checksum_type; /* checksum type */ __u8 s_padding2[3]; - __u32 s_padding[42]; +/* 0x0054 */ + __be32 s_num_fc_blks; /* Number of fast commit blocks */ +/* 0x0058 */ + __u32 s_padding[41]; __be32 s_checksum; /* crc32c(superblock) */ /* 0x0100 */ |