On 2016/11/12 5:03, Jaegeuk Kim wrote: > We can allow dio reads for LFS mode, while doing buffered writes for dio > writes. > > Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org> > --- > fs/f2fs/data.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c > index ca53da5..996b9ae 100644 > --- a/fs/f2fs/data.c > +++ b/fs/f2fs/data.c > @@ -1732,7 +1732,7 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, > struct iov_iter *iter) > > if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode)) > return 0; > - if (test_opt(F2FS_I_SB(inode), LFS)) > + if (rw == WRITE && test_opt(F2FS_I_SB(inode), LFS))
For LFS mode, we must disallow any IPU in main area including direct write, instead of both direct read and write, so this patch relieves the restriction? IIUC, please add: Reviewed-by: Chao Yu <yuch...@huawei.com> Thanks, > return 0; > > trace_f2fs_direct_IO_enter(inode, offset, count, rw); >
