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Commit a1dd5331 authored by Theodore Ts'o's avatar Theodore Ts'o
Browse files

jbd2: use offset_in_page() instead of manual calculation 



This is a port to jbd2 of a patch which Namhyung Kim <namhyung@gmail.com>
originally made to fs/jbd.

Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent cfef2c6a

fs/jbd2/transaction.c

+1 −1
Original line number Diff line number Diff line
@@ -774,7 +774,7 @@ do_get_write_access(handle_t *handle, struct journal_head *jh, 
		J_EXPECT_JH(jh, buffer_uptodate(jh2bh(jh)),

			    "Possible IO failure.\n");

		page = jh2bh(jh)->b_page;

		offset = ((unsigned long) jh2bh(jh)->b_data) & ~PAGE_MASK;

		offset = offset_in_page(jh2bh(jh)->b_data);

		source = kmap_atomic(page, KM_USER0);

		/* Fire data frozen trigger just before we copy the data */

		jbd2_buffer_frozen_trigger(jh, source + offset,