summaryrefslogtreecommitdiffstats
path: root/fs/ext4/file.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ext4/file.c')
-rw-r--r--fs/ext4/file.c14
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) {