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Message-ID: <ZEbabjCZhl6j1Pk+@kbusch-mbp.dhcp.thefacebook.com> Date: Mon, 24 Apr 2023 13:37:18 -0600 From: Keith Busch <kbusch@...nel.org> To: Randy Dunlap <rdunlap@...radead.org> Cc: Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>, Miklos Szeredi <miklos@...redi.hu>, "Darrick J. Wong" <djwong@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, David Howells <dhowells@...hat.com>, Matthew Wilcox <willy@...radead.org>, linux-block@...r.kernel.org, linux-fsdevel@...r.kernel.org, ceph-devel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, cluster-devel@...hat.com, linux-xfs@...r.kernel.org, linux-nfs@...r.kernel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 02/17] fs: remove the special !CONFIG_BLOCK def_blk_fops On Mon, Apr 24, 2023 at 12:22:30PM -0700, Randy Dunlap wrote: > On 4/23/23 22:49, Christoph Hellwig wrote: > > + if (IS_ENABLED(CONFIG_BLOCK)) > > + inode->i_fop = &def_blk_fops; > > It looks like def_blk_fops is being removed (commit message and patch > fragment below), but here (above line) it is being used. > > Am I just confused? The def_blk_fops is removed only for the !CONFIG_BLOCK case. Its usage is under a branch known at compile time, so it's optimized out for that case before trying to resolve the symbol.
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