diff options
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 9ad03036d9f5..f7cca423dded 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -132,9 +132,8 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) ret = -EFBIG; goto errout; } - - if (pos + length > sbi->s_bitmap_maxbytes) - iov_iter_truncate(from, sbi->s_bitmap_maxbytes - pos); + iov_iter_truncate(from, sbi->s_bitmap_maxbytes - pos); + length = iov_iter_count(from); } iocb->private = &overwrite; @@ -172,7 +171,16 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) } } + ret = generic_write_checks(file, &iocb->ki_pos, &length, 0); + if (ret) + goto out; + + if (length == 0) + goto out; + + iov_iter_truncate(from, length); ret = __generic_file_write_iter(iocb, from); +out: mutex_unlock(&inode->i_mutex); if (ret > 0) { |