cachefiles: Drop superfluous readpages aops NULL check
After the recent actions to convert readpages aops to readahead, the NULL checks of readpages aops in cachefiles_read_or_alloc_page() may hit falsely. More badly, it's an ASSERT() call, and this panics. Drop the superfluous NULL checks for fixing this regression. [DH: Note that cachefiles never actually used readpages, so this check was never actually necessary] BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=208883 BugLink: https://bugzilla.opensuse.org/show_bug.cgi?id=1175245 Fixes: 9ae326a6 ("CacheFiles: A cache that backs onto a mounted filesystem") Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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