Commit 823d13e1 authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
Browse files

f2fs: fix to cover __allocate_new_section() with curseg_lock 



In order to avoid race with f2fs_do_replace_block().

Fixes: f5a53edc ("f2fs: support aligned pinned file")
Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent 753a8ed0

fs/f2fs/segment.c

+4 −0
Original line number Diff line number Diff line
@@ -2945,19 +2945,23 @@ static void __allocate_new_section(struct f2fs_sb_info *sbi, int type) 


void f2fs_allocate_new_section(struct f2fs_sb_info *sbi, int type)

{

	down_read(&SM_I(sbi)->curseg_lock);

	down_write(&SIT_I(sbi)->sentry_lock);

	__allocate_new_section(sbi, type);

	up_write(&SIT_I(sbi)->sentry_lock);

	up_read(&SM_I(sbi)->curseg_lock);

}



void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi)

{

	int i;



	down_read(&SM_I(sbi)->curseg_lock);

	down_write(&SIT_I(sbi)->sentry_lock);

	for (i = CURSEG_HOT_DATA; i <= CURSEG_COLD_DATA; i++)

		__allocate_new_segment(sbi, i, false);

	up_write(&SIT_I(sbi)->sentry_lock);

	up_read(&SM_I(sbi)->curseg_lock);

}



static const struct segment_allocation default_salloc_ops = {