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authorHarshad Shirwadkar <harshadshirwadkar@gmail.com>2020-10-26 21:49:14 -0700
committerTheodore Ts'o <tytso@mit.edu>2020-10-28 13:42:03 -0400
commite029c5f2798720b463e8df0e184a4d1036311b43 (patch)
tree2e8d7688645f7c0ceba13986f7e8e622e583b322 /include
parentd0520df7240f7117226e871453e1b20d12a9614a (diff)
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')
-rw-r--r--include/linux/jbd2.h5
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 */

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