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Commit 2a0e3388 authored by Namhyung Kim's avatar Namhyung Kim Committed by Jan Kara
Browse files

jbd: Check return value of __getblk() 



Fail journal creation if __getblk() returns NULL.  unlikely() is
added because it is called in a loop and we've been OK without
the check until now.

Signed-off-by: default avatarNamhyung Kim <namhyung@gmail.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 81a4e320

fs/jbd/journal.c

+2 −0
Original line number Diff line number Diff line
@@ -952,6 +952,8 @@ int journal_create(journal_t *journal) 
		if (err)

			return err;

		bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);

		if (unlikely(!bh))

			return -ENOMEM;

		lock_buffer(bh);

		memset (bh->b_data, 0, journal->j_blocksize);

		BUFFER_TRACE(bh, "marking dirty");