Re: [bugzilla:219548] the kernel crashes when storing an EXT4 file system in a ZRAM device
From: Matthew Wilcox <willy@infradead.org>
Date: 2024-12-12 04:14:34
Also in:
linux-ext4, linux-fsdevel
On Thu, Dec 12, 2024 at 12:58:26PM +0900, Sergey Senozhatsky wrote:
Hi, We've got two reports [1] [2] (could be the same person) which suggest that ext4 may change page content while the page is under write(). The particular problem here the case when ext4 is on the zram device. zram compresses every page written to it, so if the page content can be modified concurrently with zram's compression then we can't really use zram with ext4.
Do you set BLK_FEAT_STABLE_WRITES on zram?