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hostfs: Fix the NULL vs IS_ERR() bug for __filemap_get_folio()

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The __filemap_get_folio() function returns error pointers.
It never returns NULL. So use IS_ERR() to check it.

Fixes: 1da86618bd ("fs: Convert aops->write_begin to take a folio")
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
ZhangPeng 2024-11-04 20:34:40 +08:00 committed by Richard Weinberger
parent 2f681ba4b3
commit bed2cc4826
1 changed files with 2 additions and 2 deletions
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4
fs/hostfs/hostfs_kern.c
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@ -472,8 +472,8 @@ static int hostfs_write_begin(struct file *file, struct address_space *mapping,
*foliop = __filemap_get_folio(mapping, index, FGP_WRITEBEGIN,
mapping_gfp_mask(mapping));
if (!*foliop)
return -ENOMEM;
if (IS_ERR(*foliop))
return PTR_ERR(*foliop);
return 0;
}