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Message-ID: <3c4ac1ab5f7afbbd745f88c595ee1465fc2e9ac6.camel@dubeyko.com> Date: Fri, 04 Jul 2025 10:45:27 -0700 From: Viacheslav Dubeyko <slava@...eyko.com> To: Yangtao Li <frank.li@...o.com>, axboe@...nel.dk, aivazian.tigran@...il.com, viro@...iv.linux.org.uk, brauner@...nel.org, jack@...e.cz, linkinjeon@...nel.org, sj1557.seo@...sung.com, yuezhang.mo@...y.com, glaubitz@...sik.fu-berlin.de, shaggy@...nel.org, konishi.ryusuke@...il.com, almaz.alexandrovich@...agon-software.com, me@...copeland.com, willy@...radead.org, josef@...icpanda.com, kovalev@...linux.org, dave@...olabs.net, mhocko@...e.com, chentaotao@...iglobal.com Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, jfs-discussion@...ts.sourceforge.net, linux-nilfs@...r.kernel.org, ntfs3@...ts.linux.dev, linux-karma-devel@...ts.sourceforge.net, bpf@...r.kernel.org Subject: Re: [PATCH 3/4] hfsplus: enable uncached buffer io support On Thu, 2025-06-26 at 11:30 -0600, Yangtao Li wrote: > Now cont_write_begin() support DONTCACHE mode, let's set > FOP_DONTCACHE > flag to enable uncached buffer io support for hfsplus. > > Signed-off-by: Yangtao Li <frank.li@...o.com> > --- > fs/hfsplus/inode.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c > index 26cc150856b9..b790ffe92019 100644 > --- a/fs/hfsplus/inode.c > +++ b/fs/hfsplus/inode.c > @@ -372,6 +372,7 @@ static const struct file_operations > hfsplus_file_operations = { > .open = hfsplus_file_open, > .release = hfsplus_file_release, > .unlocked_ioctl = hfsplus_ioctl, > + .fop_flags = FOP_DONTCACHE, > }; > > struct inode *hfsplus_new_inode(struct super_block *sb, struct inode > *dir, The same question for HFS+. Because, it is again old and pretty obsolete file system. :) The main use-case is simply support the capability to mount HFS+ volume is created under Mac OS X, for example, and to access the data there. What is the point to support this feature in HFS+? Currently, around 200 xfstests fails in HFS/HFS+. We even cannot test any new functionality properly. And guys reports bugs in existing functionality. We need to be focused on this right now. Sorry, HFS/HFS+ is not so good ground for implementing new features. :) We really need to stabilize the existing functionality right now. And we have a lot of work yet. :) Thanks, Slava.
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