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Merge pull request #305 from versity/auke/block_submit_bio_err

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Set BLOCK_BIT_ERROR on bio submit failure during forced unmount
This commit is contained in:
Zach Brown
2026-05-04 09:35:43 -07:00
committed by GitHub
parent 8e0066b231 8bfd35db0b
commit ec38b6e1c8
1 changed files with 12 additions and 3 deletions
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kmod/src/block.c
+12 -3
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@@ -467,9 +467,6 @@ static int block_submit_bio(struct super_block *sb, struct block_private *bp,
sector_t sector;
int ret = 0;
if (scoutfs_forcing_unmount(sb))
return -ENOLINK;
sector = bp->bl.blkno << (SCOUTFS_BLOCK_LG_SHIFT - 9);
WARN_ON_ONCE(bp->bl.blkno == U64_MAX);
@@ -480,6 +477,17 @@ static int block_submit_bio(struct super_block *sb, struct block_private *bp,
set_bit(BLOCK_BIT_IO_BUSY, &bp->bits);
block_get(bp);
/*
* A second thread may already be waiting on this block's completion
* after this thread won the race to submit the block. We exit through
* the block_end_io error path which sets BLOCK_BIT_ERROR and assures
* that other callers in the waitq get woken up.
*/
if (scoutfs_forcing_unmount(sb)) {
ret = -ENOLINK;
goto end_io;
}
blk_start_plug(&plug);
for (off = 0; off < SCOUTFS_BLOCK_LG_SIZE; off += PAGE_SIZE) {
@@ -517,6 +525,7 @@ static int block_submit_bio(struct super_block *sb, struct block_private *bp,
blk_finish_plug(&plug);
end_io:
/* let racing end_io know we're done */
block_end_io(sb, opf, bp, ret);