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fs/buffer.c: remove unnecessary init operation after allocating buffer_head.

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bh allocation uses kmem_cache_zalloc() so we needn't call
'init_buffer(bh, NULL, NULL)' and perform other set-zero-operations.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
majianpeng 2013-04-29 15:08:51 -07:00 committed by Linus Torvalds
parent 3464046824
commit e76004093d
3 changed files with 0 additions and 6 deletions
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2
fs/buffer.c
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@ -865,8 +865,6 @@ struct buffer_head *alloc_page_buffers(struct page *page, unsigned long size,
/* Link the buffer to its page */
set_bh_page(bh, page, offset);
init_buffer(bh, NULL, NULL);
}
return head;
/*

2
fs/jbd/journal.c
View file

@ -310,8 +310,6 @@ int journal_write_metadata_buffer(transaction_t *transaction,
new_bh = alloc_buffer_head(GFP_NOFS|__GFP_NOFAIL);
/* keep subsequent assertions sane */
new_bh->b_state = 0;
init_buffer(new_bh, NULL, NULL);
atomic_set(&new_bh->b_count, 1);
new_jh = journal_add_journal_head(new_bh); /* This sleeps */

2
fs/jbd2/journal.c
View file

@ -367,8 +367,6 @@ int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
}
/* keep subsequent assertions sane */
new_bh->b_state = 0;
init_buffer(new_bh, NULL, NULL);
atomic_set(&new_bh->b_count, 1);
new_jh = jbd2_journal_add_journal_head(new_bh); /* This sleeps */