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bcachefs: Factor out jset_entry_log_msg_bytes()

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Needed for improved userspace cmd_list_journal

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2024-10-09 21:51:05 -04:00
parent 0269e27ce3
commit 106480e9a8
2 changed files with 10 additions and 2 deletions
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fs/bcachefs/bcachefs_format.h
+9
View File
@@ -1219,6 +1219,15 @@ struct jset_entry_log {
u8 d[];
} __packed __aligned(8);
static inline unsigned jset_entry_log_msg_bytes(struct jset_entry_log *l)
{
unsigned b = vstruct_bytes(&l->entry) - offsetof(struct jset_entry_log, d);
while (b && !l->d[b - 1])
--b;
return b;
}
struct jset_entry_datetime {
struct jset_entry entry;
__le64 seconds;
fs/bcachefs/journal_io.c
+1 -2
View File
@@ -738,9 +738,8 @@ static void journal_entry_log_to_text(struct printbuf *out, struct bch_fs *c,
struct jset_entry *entry)
{
struct jset_entry_log *l = container_of(entry, struct jset_entry_log, entry);
unsigned bytes = vstruct_bytes(entry) - offsetof(struct jset_entry_log, d);
prt_printf(out, "%.*s", bytes, l->d);
prt_printf(out, "%.*s", jset_entry_log_msg_bytes(l), l->d);
}
static int journal_entry_overwrite_validate(struct bch_fs *c,