[PATCH v2 11/11] zonefs: use zone-append for sequential zones
From: Johannes Thumshirn <hidden>
Date: 2020-03-24 15:25:25
Also in:
linux-fsdevel, linux-scsi
Subsystem:
filesystems (vfs and infrastructure), the rest, zonefs filesystem · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds, Damien Le Moal, Naohiro Aota
Signed-off-by: Johannes Thumshirn <redacted> --- fs/zonefs/super.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index 69aee3dfb660..d08d715c99de 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c@@ -628,12 +628,17 @@ static ssize_t zonefs_file_dio_write(struct kiocb *iocb, struct iov_iter *from) goto inode_unlock; } - /* Enforce sequential writes (append only) in sequential zones */ mutex_lock(&zi->i_truncate_mutex); - if (zi->i_ztype == ZONEFS_ZTYPE_SEQ && iocb->ki_pos != zi->i_wpoffset) { - mutex_unlock(&zi->i_truncate_mutex); - ret = -EINVAL; - goto inode_unlock; + if (zi->i_ztype == ZONEFS_ZTYPE_SEQ) { + /* Enforce sequential writes (append only) */ + if (iocb->ki_pos != zi->i_wpoffset) { + mutex_unlock(&zi->i_truncate_mutex); + ret = -EINVAL; + goto inode_unlock; + } + /* Use zone append for sync write */ + if (is_sync_kiocb(iocb)) + iocb->ki_flags |= IOCB_ZONE_APPEND; } mutex_unlock(&zi->i_truncate_mutex);
--
2.24.1