On 2023/10/8 14:39, Su Hui wrote:
With gcc and W=1 option, there's a warning like this:

fs/f2fs/compress.c: In function ‘f2fs_init_page_array_cache’:
fs/f2fs/compress.c:1984:47: error: ‘%u’ directive writing between
1 and 7 bytes into a region of size between 5 and 8
[-Werror=format-overflow=]
  1984 |  sprintf(slab_name, "f2fs_page_array_entry-%u:%u", MAJOR(dev),
                MINOR(dev));
       |                                               ^~

String "f2fs_page_array_entry-%u:%u" can up to 35. The first "%u" can up
to 4 and the second "%u" can up to 7, so total size is "24 + 4 + 7 = 35".
slab_name's size should be 35 rather than 32.

Signed-off-by: Su Hui <[email protected]>

Looks good to me, thanks for the patch.

Reviewed-by: Chao Yu <[email protected]>

Thanks,


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