diff options
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index bf0e772b6a03..79b77a51a322 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -113,8 +113,6 @@ ext4_file_dio_write(struct kiocb *iocb, const struct iovec *iov, ext4_unwritten_wait(inode); } - BUG_ON(iocb->ki_pos != pos); - mutex_lock(&inode->i_mutex); blk_start_plug(&plug); @@ -168,9 +166,12 @@ static ssize_t ext4_file_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos) { + struct file *file = iocb->ki_filp; struct inode *inode = file_inode(iocb->ki_filp); ssize_t ret; + BUG_ON(iocb->ki_pos != pos); + /* * If we have encountered a bitmap-format file, the size limit * is smaller than s_maxbytes, which is for extent-mapped files. @@ -192,8 +193,19 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov, if (unlikely(iocb->ki_filp->f_flags & O_DIRECT)) ret = ext4_file_dio_write(iocb, iov, nr_segs, pos); - else - ret = generic_file_aio_write(iocb, iov, nr_segs, pos); + else { + mutex_lock(&inode->i_mutex); + ret = __generic_file_aio_write(iocb, iov, nr_segs); + mutex_unlock(&inode->i_mutex); + + if (ret > 0) { + ssize_t err; + + err = generic_write_sync(file, iocb->ki_pos - ret, ret); + if (err < 0) + ret = err; + } + } return ret; } |