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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-24 14:16:02 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-24 14:16:02 -0800
commit555a6e8c11e6282bb2704ef1cee64ceaeb41773e (patch)
treeaab2e492fcfdbd96bea97e409919e8979bfc6525 /include
parent2f2fce3d535779cb1b0d77ce839029d5d875d4f4 (diff)
parentbe993933d2e997fdb72b8b1418d2a84df79b8962 (diff)
downloadlinux-555a6e8c11e6282bb2704ef1cee64ceaeb41773e.tar.bz2
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o: "Various bug fixes and cleanups for ext4; no new features this cycle" * tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (29 commits) ext4: remove unnecessary wbc parameter from ext4_bio_write_page ext4: avoid s_mb_prefetch to be zero in individual scenarios ext4: defer saving error info from atomic context ext4: simplify ext4 error translation ext4: move functions in super.c ext4: make ext4_abort() use __ext4_error() ext4: standardize error message in ext4_protect_reserved_inode() ext4: remove redundant sb checksum recomputation ext4: don't remount read-only with errors=continue on reboot ext4: fix deadlock with fs freezing and EA inodes jbd2: add a helper to find out number of fast commit blocks ext4: make fast_commit.h byte identical with e2fsprogs/fast_commit.h ext4: fix fall-through warnings for Clang ext4: add docs about fast commit idempotence ext4: remove the unused EXT4_CURRENT_REV macro ext4: fix an IS_ERR() vs NULL check ext4: check for invalid block size early when mounting a file system ext4: fix a memory leak of ext4_free_data ext4: delete nonsensical (commented-out) code inside ext4_xattr_block_set() ext4: update ext4_data_block_valid related comments ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/jbd2.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 578ff196b3ce..99d3cd051ac3 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -68,7 +68,7 @@ extern void *jbd2_alloc(size_t size, gfp_t flags);
extern void jbd2_free(void *ptr, size_t size);
#define JBD2_MIN_JOURNAL_BLOCKS 1024
-#define JBD2_MIN_FC_BLOCKS 256
+#define JBD2_DEFAULT_FAST_COMMIT_BLOCKS 256
#ifdef __KERNEL__
@@ -538,6 +538,7 @@ struct transaction_chp_stats_s {
* The transaction keeps track of all of the buffers modified by a
* running transaction, and all of the buffers committed but not yet
* flushed to home for finished transactions.
+ * (Locking Documentation improved by LockDoc)
*/
/*
@@ -658,12 +659,12 @@ struct transaction_s
unsigned long t_start;
/*
- * When commit was requested
+ * When commit was requested [j_state_lock]
*/
unsigned long t_requested;
/*
- * Checkpointing stats [j_checkpoint_sem]
+ * Checkpointing stats [j_list_lock]
*/
struct transaction_chp_stats_s t_chp_stats;
@@ -1691,6 +1692,13 @@ static inline int jbd2_journal_has_csum_v2or3(journal_t *journal)
return journal->j_chksum_driver != NULL;
}
+static inline int jbd2_journal_get_num_fc_blks(journal_superblock_t *jsb)
+{
+ int num_fc_blocks = be32_to_cpu(jsb->s_num_fc_blks);
+
+ return num_fc_blocks ? num_fc_blocks : JBD2_DEFAULT_FAST_COMMIT_BLOCKS;
+}
+
/*
* Return number of free blocks in the log. Must be called under j_state_lock.
*/