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9p: set page uptodate when required in write_end() 

Commit 77469c3f57 prevented setting the page as uptodate when we wrote
the right amount of data, fix that.

Fixes: 77469c3f57 ("9p: saner ->write_end() on failing copy into non-uptodate page")
Reviewed-by: Jan Kara <jack@suse.com>
Signed-off-by: Alexander Levin <alexander.levin@verizon.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexander Levin 2017-04-10 18:46:51 +00:00 committed by Linus Torvalds
parent a0db28909e
commit 56ae414e9d
1 changed files with 7 additions and 3 deletions
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10
fs/9p/vfs_addr.c
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@ -310,9 +310,13 @@ static int v9fs_write_end(struct file *filp, struct address_space *mapping,
p9_debug(P9_DEBUG_VFS, "filp %p, mapping %p\n", filp, mapping);
if (unlikely(copied < len && !PageUptodate(page))) {
copied = 0;
goto out;
if (!PageUptodate(page)) {
if (unlikely(copied < len)) {
copied = 0;
goto out;
} else if (len == PAGE_SIZE) {
SetPageUptodate(page);
}
}
/*
* No need to use i_size_read() here, the i_size