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Date: Wed, 30 Jun 2021 20:48:04 -0400 From: "Theodore Ts'o" <tytso@....edu> To: Josh Triplett <josh@...htriplett.org> Cc: linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, Andreas Dilger <adilger.kernel@...ger.ca> Subject: Re: [PATCH 1/2] fs: ext4: Consolidate checks for resize of bigalloc into ext4_resize_begin On Thu, Jun 24, 2021 at 10:23:15AM -0400, Theodore Ts'o wrote: > On Mon, Jun 07, 2021 at 12:15:08PM -0700, Josh Triplett wrote: > > Two different places checked for attempts to resize a filesystem with > > the bigalloc feature. Move the check into ext4_resize_begin, which both > > places already call. > > > > Signed-off-by: Josh Triplett <josh@...htriplett.org> > > Applied, thanks. I'm going to have to revert this change, since it breaks online resizing for bigalloc file system. The issue is that ext4_resize_begin() is called from *three* places: for EXT4_IOC_GROUP_ADD, EXT4_IOC_GROUP_EXTEND, and EXT4_IOC_RESIZE_FS. The first two ioctls are used for the "old-style" online resize, and bigalloc is not supported for those two ioctls. However, it *is* supposed to work for EXT4_IOC_RESIZE_FS. Unfortunately, this just caused some tests to be skipped (assuming that this was an old kernel that didn't support this feature) and I didn't notice it right away. - Ted
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