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    vfs: Introduce new helpers for syncing after writing to O_SYNC file or IS_SYNC inode · 148f948b
    Jan Kara 提交于
    Introduce new function for generic inode syncing (vfs_fsync_range) and use
    it from fsync() path. Introduce also new helper for syncing after a sync
    write (generic_write_sync) using the generic function.
    
    Use these new helpers for syncing from generic VFS functions. This makes
    O_SYNC writes to block devices acquire i_mutex for syncing. If we really
    care about this, we can make block_fsync() drop the i_mutex and reacquire
    it before it returns.
    
    CC: Evgeniy Polyakov <zbr@ioremap.net>
    CC: ocfs2-devel@oss.oracle.com
    CC: Joel Becker <joel.becker@oracle.com>
    CC: Felix Blyakher <felixb@sgi.com>
    CC: xfs@oss.sgi.com
    CC: Anton Altaparmakov <aia21@cantab.net>
    CC: linux-ntfs-dev@lists.sourceforge.net
    CC: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
    CC: linux-ext4@vger.kernel.org
    CC: tytso@mit.edu
    Acked-by: NChristoph Hellwig <hch@lst.de>
    Signed-off-by: NJan Kara <jack@suse.cz>
    148f948b
sync.c 12.5 KB