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| author | Christoph Hellwig <hch@lst.de> | 2023-06-15 09:48:38 +0300 |
|---|---|---|
| committer | Song Liu <song@kernel.org> | 2023-07-27 10:13:29 +0300 |
| commit | d7038f951828da19fa9aafddfa087b69032c9687 (patch) | |
| tree | 850da5dbedbe91c2a283561ad7738c6383bd1a00 /drivers/md/md-bitmap.h | |
| parent | f5f2d5ac9f6e807e080311ec36bdf3d6c45b40d4 (diff) | |
| download | linux-d7038f951828da19fa9aafddfa087b69032c9687.tar.xz | |
md-bitmap: don't use ->index for pages backing the bitmap file
The md driver allocates pages for storing the bitmap file data, which
are not page cache pages, and then stores the page granularity file
offset in page->index, which is a field that isn't really valid except
for page cache pages.
Use a separate index for the superblock, and use the scheme used at
read size to recalculate the index for the bitmap pages instead.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230615064840.629492-10-hch@lst.de
Diffstat (limited to 'drivers/md/md-bitmap.h')
| -rw-r--r-- | drivers/md/md-bitmap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/md-bitmap.h b/drivers/md/md-bitmap.h index 8a3788c9bfef..bb9eb418780a 100644 --- a/drivers/md/md-bitmap.h +++ b/drivers/md/md-bitmap.h @@ -201,6 +201,7 @@ struct bitmap { struct file *file; /* backing disk file */ struct page *sb_page; /* cached copy of the bitmap * file superblock */ + unsigned long sb_index; struct page **filemap; /* list of cache pages for * the file */ unsigned long *filemap_attr; /* attributes associated |