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| author | Zheng Bin <[email protected]> | 2020-06-18 04:21:37 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2020-06-18 15:24:35 +0000 |
| commit | f4bd34b139a3fa2808c4205f12714c65e1548c6c (patch) | |
| tree | f006235fc2d2c665077d6fabf8b971b81b55f1c7 /tools/perf/scripts/python/powerpc-hcalls.py | |
| parent | partitions/ldm: Replace uuid_copy() with import_uuid() where it makes sense (diff) | |
| download | kernel-f4bd34b139a3fa2808c4205f12714c65e1548c6c.tar.gz kernel-f4bd34b139a3fa2808c4205f12714c65e1548c6c.zip | |
loop: replace kill_bdev with invalidate_bdev
When a filesystem is mounted on a loop device and on a loop ioctl
LOOP_SET_STATUS64, because of kill_bdev, buffer_head mappings are getting
destroyed.
kill_bdev
truncate_inode_pages
truncate_inode_pages_range
do_invalidatepage
block_invalidatepage
discard_buffer -->clear BH_Mapped flag
sb_bread
__bread_gfp
bh = __getblk_gfp
-->discard_buffer clear BH_Mapped flag
__bread_slow
submit_bh
submit_bh_wbc
BUG_ON(!buffer_mapped(bh)) --> hit this BUG_ON
Fixes: 5db470e229e2 ("loop: drop caches if offset or block_size are changed")
Signed-off-by: Zheng Bin <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/powerpc-hcalls.py')
0 files changed, 0 insertions, 0 deletions