For zoned devices, f2fs forbids direct IO and forces buffered IO to serialize write IOs. However, the constraint does not apply to read IOs.
Signed-off-by: Eunhee Rho <[email protected]> --- fs/f2fs/f2fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index d0f428aef34b..f69731f17402 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -4471,7 +4471,7 @@ static inline bool f2fs_force_buffered_io(struct inode *inode, * for blkzoned device, fallback direct IO to buffered IO, so * all IOs can be serialized by log-structured write. */ - if (f2fs_sb_has_blkzoned(sbi)) + if (f2fs_sb_has_blkzoned(sbi) && (rw == WRITE)) return true; if (f2fs_lfs_mode(sbi) && (rw == WRITE)) { if (block_unaligned_IO(inode, iocb, iter)) -- 2.25.1 _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
