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fix bch2_super_write() for bs > 4096

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2025-02-22 09:29:56 -05:00
parent dd1a882d17
commit 86cbeaf1c2
1 changed files with 2 additions and 2 deletions

4
c_src/libbcachefs.c
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@ -352,9 +352,9 @@ void bch2_super_write(int fd, struct bch_sb *sb)
if (sb->offset == BCH_SB_SECTOR) {
/* Write backup layout */
BUG_ON(bs > 4096);
unsigned buflen = max(bs, 4096);
char *buf = aligned_alloc(bs, bs);
char *buf = aligned_alloc(buflen, buflen);
xpread(fd, buf, bs, 4096 - bs);
memcpy(buf + bs - sizeof(sb->layout),
&sb->layout,