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Date: Mon, 24 Jun 2019 17:33:58 +0200 From: Jan Kara <jack@...e.cz> To: "Darrick J. Wong" <darrick.wong@...cle.com> Cc: matthew.garrett@...ula.com, yuchao0@...wei.com, tytso@....edu, ard.biesheuvel@...aro.org, josef@...icpanda.com, clm@...com, adilger.kernel@...ger.ca, viro@...iv.linux.org.uk, jack@...e.com, dsterba@...e.com, jaegeuk@...nel.org, jk@...abs.org, reiserfs-devel@...r.kernel.org, linux-efi@...r.kernel.org, devel@...ts.orangefs.org, linux-kernel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net, linux-xfs@...r.kernel.org, linux-mm@...ck.org, linux-nilfs@...r.kernel.org, linux-mtd@...ts.infradead.org, ocfs2-devel@....oracle.com, linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org, linux-btrfs@...r.kernel.org Subject: Re: [PATCH 2/7] vfs: flush and wait for io when setting the immutable flag via SETFLAGS On Fri 21-06-19 16:57:07, Darrick J. Wong wrote: > +/* > + * Flush file data before changing attributes. Caller must hold any locks > + * required to prevent further writes to this file until we're done setting > + * flags. > + */ > +static inline int inode_flush_data(struct inode *inode) > +{ > + inode_dio_wait(inode); > + return filemap_write_and_wait(inode->i_mapping); > +} BTW, how about calling this function inode_drain_writes() instead? The 'flush_data' part is more a detail of implementation of write draining than what we need to do to set immutable flag. Honza -- Jan Kara <jack@...e.com> SUSE Labs, CR
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