Re: [PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc
On Thu, Oct 13, 2016 at 06:33:19PM +0800, Chao Yu wrote: > Hi Jaegeuk, > > On 2016/10/13 7:23, Jaegeuk Kim wrote: > > This patch fixes using a wrong pointer for sum_page in f2fs_gc. > > > > Signed-off-by: Jaegeuk Kim> > --- > > fs/f2fs/gc.c | 10 +- > > 1 file changed, 5 insertions(+), 5 deletions(-) > > > > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c > > index e48142f..9c18917 100644 > > --- a/fs/f2fs/gc.c > > +++ b/fs/f2fs/gc.c > > @@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info > > *sbi, > > > > for (segno = start_segno; segno < end_segno; segno++) { > > > > - if (get_valid_blocks(sbi, segno, 1) == 0 || > > - unlikely(f2fs_cp_error(sbi))) > > - goto next; > > - > > /* find segment summary of victim */ > > sum_page = find_get_page(META_MAPPING(sbi), > > GET_SUM_BLOCK(sbi, segno)); > > - f2fs_bug_on(sbi, !PageUptodate(sum_page)); > > f2fs_put_page(sum_page, 0); > > > > + if (get_valid_blocks(sbi, segno, 1) == 0 || > > + !PageUptodate(sum_page) || > > Why uptodate flag of summary page can be cleared? someone truncates it? Well, it looks like no problem to remove this, since it will hit f2fs_cp_error(). I just intended to handle the above f2fs_bug_on here. I found you added the above bug_on, but it's not a big deal to remain tho. :) 718e53fa: f2fs: enhance foreground GC Thanks, > > Thanks, > > > + unlikely(f2fs_cp_error(sbi))) > > + goto next; > > + > > sum = page_address(sum_page); > > f2fs_bug_on(sbi, type != GET_SUM_TYPE((>footer))); > > > >
Re: [PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc
On Thu, Oct 13, 2016 at 06:33:19PM +0800, Chao Yu wrote: > Hi Jaegeuk, > > On 2016/10/13 7:23, Jaegeuk Kim wrote: > > This patch fixes using a wrong pointer for sum_page in f2fs_gc. > > > > Signed-off-by: Jaegeuk Kim > > --- > > fs/f2fs/gc.c | 10 +- > > 1 file changed, 5 insertions(+), 5 deletions(-) > > > > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c > > index e48142f..9c18917 100644 > > --- a/fs/f2fs/gc.c > > +++ b/fs/f2fs/gc.c > > @@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info > > *sbi, > > > > for (segno = start_segno; segno < end_segno; segno++) { > > > > - if (get_valid_blocks(sbi, segno, 1) == 0 || > > - unlikely(f2fs_cp_error(sbi))) > > - goto next; > > - > > /* find segment summary of victim */ > > sum_page = find_get_page(META_MAPPING(sbi), > > GET_SUM_BLOCK(sbi, segno)); > > - f2fs_bug_on(sbi, !PageUptodate(sum_page)); > > f2fs_put_page(sum_page, 0); > > > > + if (get_valid_blocks(sbi, segno, 1) == 0 || > > + !PageUptodate(sum_page) || > > Why uptodate flag of summary page can be cleared? someone truncates it? Well, it looks like no problem to remove this, since it will hit f2fs_cp_error(). I just intended to handle the above f2fs_bug_on here. I found you added the above bug_on, but it's not a big deal to remain tho. :) 718e53fa: f2fs: enhance foreground GC Thanks, > > Thanks, > > > + unlikely(f2fs_cp_error(sbi))) > > + goto next; > > + > > sum = page_address(sum_page); > > f2fs_bug_on(sbi, type != GET_SUM_TYPE((>footer))); > > > >
Re: [PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc
Hi Jaegeuk, On 2016/10/13 7:23, Jaegeuk Kim wrote: > This patch fixes using a wrong pointer for sum_page in f2fs_gc. > > Signed-off-by: Jaegeuk Kim> --- > fs/f2fs/gc.c | 10 +- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c > index e48142f..9c18917 100644 > --- a/fs/f2fs/gc.c > +++ b/fs/f2fs/gc.c > @@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, > > for (segno = start_segno; segno < end_segno; segno++) { > > - if (get_valid_blocks(sbi, segno, 1) == 0 || > - unlikely(f2fs_cp_error(sbi))) > - goto next; > - > /* find segment summary of victim */ > sum_page = find_get_page(META_MAPPING(sbi), > GET_SUM_BLOCK(sbi, segno)); > - f2fs_bug_on(sbi, !PageUptodate(sum_page)); > f2fs_put_page(sum_page, 0); > > + if (get_valid_blocks(sbi, segno, 1) == 0 || > + !PageUptodate(sum_page) || Why uptodate flag of summary page can be cleared? someone truncates it? Thanks, > + unlikely(f2fs_cp_error(sbi))) > + goto next; > + > sum = page_address(sum_page); > f2fs_bug_on(sbi, type != GET_SUM_TYPE((>footer))); > >
Re: [PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc
Hi Jaegeuk, On 2016/10/13 7:23, Jaegeuk Kim wrote: > This patch fixes using a wrong pointer for sum_page in f2fs_gc. > > Signed-off-by: Jaegeuk Kim > --- > fs/f2fs/gc.c | 10 +- > 1 file changed, 5 insertions(+), 5 deletions(-) > > diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c > index e48142f..9c18917 100644 > --- a/fs/f2fs/gc.c > +++ b/fs/f2fs/gc.c > @@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, > > for (segno = start_segno; segno < end_segno; segno++) { > > - if (get_valid_blocks(sbi, segno, 1) == 0 || > - unlikely(f2fs_cp_error(sbi))) > - goto next; > - > /* find segment summary of victim */ > sum_page = find_get_page(META_MAPPING(sbi), > GET_SUM_BLOCK(sbi, segno)); > - f2fs_bug_on(sbi, !PageUptodate(sum_page)); > f2fs_put_page(sum_page, 0); > > + if (get_valid_blocks(sbi, segno, 1) == 0 || > + !PageUptodate(sum_page) || Why uptodate flag of summary page can be cleared? someone truncates it? Thanks, > + unlikely(f2fs_cp_error(sbi))) > + goto next; > + > sum = page_address(sum_page); > f2fs_bug_on(sbi, type != GET_SUM_TYPE((>footer))); > >
[PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc
This patch fixes using a wrong pointer for sum_page in f2fs_gc. Signed-off-by: Jaegeuk Kim--- fs/f2fs/gc.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index e48142f..9c18917 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, for (segno = start_segno; segno < end_segno; segno++) { - if (get_valid_blocks(sbi, segno, 1) == 0 || - unlikely(f2fs_cp_error(sbi))) - goto next; - /* find segment summary of victim */ sum_page = find_get_page(META_MAPPING(sbi), GET_SUM_BLOCK(sbi, segno)); - f2fs_bug_on(sbi, !PageUptodate(sum_page)); f2fs_put_page(sum_page, 0); + if (get_valid_blocks(sbi, segno, 1) == 0 || + !PageUptodate(sum_page) || + unlikely(f2fs_cp_error(sbi))) + goto next; + sum = page_address(sum_page); f2fs_bug_on(sbi, type != GET_SUM_TYPE((>footer))); -- 2.8.3
[PATCH] f2fs: fix wrong sum_page pointer in f2fs_gc
This patch fixes using a wrong pointer for sum_page in f2fs_gc. Signed-off-by: Jaegeuk Kim --- fs/f2fs/gc.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index e48142f..9c18917 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -854,16 +854,16 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, for (segno = start_segno; segno < end_segno; segno++) { - if (get_valid_blocks(sbi, segno, 1) == 0 || - unlikely(f2fs_cp_error(sbi))) - goto next; - /* find segment summary of victim */ sum_page = find_get_page(META_MAPPING(sbi), GET_SUM_BLOCK(sbi, segno)); - f2fs_bug_on(sbi, !PageUptodate(sum_page)); f2fs_put_page(sum_page, 0); + if (get_valid_blocks(sbi, segno, 1) == 0 || + !PageUptodate(sum_page) || + unlikely(f2fs_cp_error(sbi))) + goto next; + sum = page_address(sum_page); f2fs_bug_on(sbi, type != GET_SUM_TYPE((>footer))); -- 2.8.3