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fs/affs: bugfix: Write files greater than page size on OFS

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Previous AFFS patch fixed OFS write operations but unveiled
another bug: files greater than 4KB are being created with a wrong
size resulting in errors like the following:

dd if=/dev/zero of=file bs=4097 count=1
cp file /mnt/affs/
cp: error writing '/mnt/affs/file': Bad address

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Fabian Frederick 2017-04-24 22:13:10 +02:00 committed by Al Viro
parent 077e073e8f
commit a80f2d2224
1 changed files with 1 additions and 1 deletions
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2
fs/affs/file.c
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@ -679,7 +679,7 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping,
int written;
from = pos & (PAGE_SIZE - 1);
to = pos + len;
to = from + len;
/*
* XXX: not sure if this can handle short copies (len < copied), but
* we don't have to, because the page should always be uptodate here,