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X-OriginatorOrg: oppo.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Sep 2024 02:41:34.8692 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3cf1c12e-1b5a-4414-2120-08dcd20b409f X-MS-Exchange-CrossTenant-Id: f1905eb1-c353-41c5-9516-62b4a54b5ee6 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f1905eb1-c353-41c5-9516-62b4a54b5ee6;Ip=[58.252.5.68];Helo=[mail.oppo.com] X-MS-Exchange-CrossTenant-AuthSource: HK2PEPF00006FB5.apcprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: KL1PR02MB6569 From: liuderong When segs_per_sec is larger than 1, section may contain free segments, mtime should be the mean value of each valid segments, so introduce get_section_mtime to exclude free segments in a section. Signed-off-by: liuderong --- fs/f2fs/f2fs.h | 2 ++ fs/f2fs/gc.c | 15 ++------------- fs/f2fs/segment.c | 49 ++++++++++++++++++++++++++++++++++++++++++++----- 3 files changed, 48 insertions(+), 18 deletions(-) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 4dcdcdd..d6adf0f 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -3762,6 +3762,8 @@ enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_i= nfo *sbi, unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi); unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi, unsigned int segno); +unsigned long long get_section_mtime(struct f2fs_sb_info *sbi, + unsigned int segno); #define DEF_FRAGMENT_SIZE 4 #define MIN_FRAGMENT_SIZE 1 diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 6299639..03c6117 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -332,20 +332,14 @@ static unsigned int check_bg_victims(struct f2fs_sb_i= nfo *sbi) static unsigned int get_cb_cost(struct f2fs_sb_info *sbi, unsigned int seg= no) { struct sit_info *sit_i =3D SIT_I(sbi); - unsigned int secno =3D GET_SEC_FROM_SEG(sbi, segno); - unsigned int start =3D GET_SEG_FROM_SEC(sbi, secno); unsigned long long mtime =3D 0; unsigned int vblocks; unsigned char age =3D 0; unsigned char u; - unsigned int i; unsigned int usable_segs_per_sec =3D f2fs_usable_segs_in_sec(sbi); - for (i =3D 0; i < usable_segs_per_sec; i++) - mtime +=3D get_seg_entry(sbi, start + i)->mtime; + mtime =3D get_section_mtime(sbi, segno); vblocks =3D get_valid_blocks(sbi, segno, true); - - mtime =3D div_u64(mtime, usable_segs_per_sec); vblocks =3D div_u64(vblocks, usable_segs_per_sec); u =3D BLKS_TO_SEGS(sbi, vblocks * 100); @@ -485,10 +479,7 @@ static void add_victim_entry(struct f2fs_sb_info *sbi, struct victim_sel_policy *p, unsigned int s= egno) { struct sit_info *sit_i =3D SIT_I(sbi); - unsigned int secno =3D GET_SEC_FROM_SEG(sbi, segno); - unsigned int start =3D GET_SEG_FROM_SEC(sbi, secno); unsigned long long mtime =3D 0; - unsigned int i; if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) { if (p->gc_mode =3D=3D GC_AT && @@ -496,9 +487,7 @@ static void add_victim_entry(struct f2fs_sb_info *sbi, return; } - for (i =3D 0; i < SEGS_PER_SEC(sbi); i++) - mtime +=3D get_seg_entry(sbi, start + i)->mtime; - mtime =3D div_u64(mtime, SEGS_PER_SEC(sbi)); + mtime =3D get_section_mtime(sbi, segno); /* Handle if the system time has changed by the user */ if (mtime < sit_i->min_mtime) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 6627394..b63f35fa 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -5389,6 +5389,49 @@ unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_= info *sbi) return SEGS_PER_SEC(sbi); } +unsigned long long get_section_mtime(struct f2fs_sb_info *sbi, + unsigned int segno) +{ + unsigned int usable_segs_per_sec =3D f2fs_usable_segs_in_sec(sbi); + unsigned int secno =3D 0, start =3D 0; + struct free_segmap_info *free_i =3D FREE_I(sbi); + unsigned int valid_seg_count =3D 0; + unsigned long long mtime =3D 0; + unsigned int i; + + if (segno =3D=3D NULL_SEGNO) + return 0; + + secno =3D GET_SEC_FROM_SEG(sbi, segno); + start =3D GET_SEG_FROM_SEC(sbi, secno); + + for (i =3D 0; i < usable_segs_per_sec; i++) { + /* for large section, only check the mtime of valid segment= s */ + if (__is_large_section(sbi)) { + spin_lock(&free_i->segmap_lock); + if (test_bit(start + i, free_i->free_segmap)) { + mtime +=3D get_seg_entry(sbi, start + i)->m= time; + valid_seg_count++; + } + spin_unlock(&free_i->segmap_lock); + } else { + mtime +=3D get_seg_entry(sbi, start + i)->mtime; + } + } + + if (__is_large_section(sbi)) { + if (!valid_seg_count) + goto out; + mtime =3D div_u64(mtime, valid_seg_count); + } else { + mtime =3D div_u64(mtime, usable_segs_per_sec); + } + +out: + return mtime; +} + /* * Update min, max modified time for cost-benefit GC algorithm */ @@ -5402,13 +5445,9 @@ static void init_min_max_mtime(struct f2fs_sb_info *= sbi) sit_i->min_mtime =3D ULLONG_MAX; for (segno =3D 0; segno < MAIN_SEGS(sbi); segno +=3D SEGS_PER_SEC(s= bi)) { - unsigned int i; unsigned long long mtime =3D 0; - for (i =3D 0; i < SEGS_PER_SEC(sbi); i++) - mtime +=3D get_seg_entry(sbi, segno + i)->mtime; - - mtime =3D div_u64(mtime, SEGS_PER_SEC(sbi)); + mtime =3D get_section_mtime(sbi, segno); if (sit_i->min_mtime > mtime) sit_i->min_mtime =3D mtime; -- 2.7.4 ________________________________ OPPO =C2=B1=C2=BE=C2=B5=C3=A7=C3=97=C3=93=C3=93=C3=8A=C2=BC=C3=BE=C2=BC=C2=B0=C3= =86=C3=A4=C2=B8=C2=BD=C2=BC=C3=BE=C2=BA=C2=AC=C3=93=C3=90OPPO=C2=B9=C2=AB= =C3=8B=C2=BE=C2=B5=C3=84=C2=B1=C2=A3=C3=83=C3=9C=C3=90=C3=85=C3=8F=C2=A2=C2= =A3=C2=AC=C2=BD=C3=B6=C3=8F=C3=9E=C3=93=C3=9A=C3=93=C3=8A=C2=BC=C3=BE=C3=96= =C2=B8=C3=83=C3=B7=C2=B5=C3=84=C3=8A=C3=95=C2=BC=C3=BE=C3=88=C3=8B=C2=A3=C2= =A8=C2=B0=C3=BC=C2=BA=C2=AC=C2=B8=C3=B6=C3=88=C3=8B=C2=BC=C2=B0=C3=88=C2=BA= =C3=97=C3=A9=C2=A3=C2=A9=C3=8A=C2=B9=C3=93=C3=83=C2=A1=C2=A3=C2=BD=C3=BB=C3= 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Any use of the information contained herein in any way (including, but= not limited to, total or partial disclosure, reproduction, or disseminatio= n) by persons other than the intended recipient(s) is prohibited. If you ar= e not the intended recipient, please do not read, copy, distribute, or use = this information. If you have received this transmission in error, please n= otify the sender immediately by reply e-mail and then delete this message. Electronic communications may contain computer viruses or other defects inh= erently, may not be accurately and/or timely transmitted to other systems, = or may be intercepted, modified ,delayed, deleted or interfered. OPPO shall= not be liable for any damages that arise or may arise from such matter and= reserves all rights in connection with the email. Unless expressly stated, this e-mail and its attachments are provided witho= ut any warranty, acceptance or promise of any kind in any country or region= , nor constitute a formal confirmation or acceptance of any transaction or = contract. The sender, together with its affiliates or any shareholder, dire= ctor, officer, employee or any other person of any such institution (herein= after referred to as "sender" or "OPPO") does not waive any rights and shal= l not be liable for any damages that arise or may arise from the intentiona= l or negligent use of such information. Cultural Differences Disclosure: Due to global cultural differences, any re= ply with only YES\OK or other simple words does not constitute any confirma= tion or acceptance of any transaction or contract, please confirm with the = sender again to ensure clear opinion in written form. The sender shall not = be responsible for any direct or indirect damages resulting from the intent= ional or misuse of such information. ________________________________ OPPO =E6=9C=AC=E7=94=B5=E5=AD=90=E9=82=AE=E4=BB=B6=E5=8F=8A=E5=85=B6=E9=99=84=E4= =BB=B6=E5=90=AB=E6=9C=89OPPO=E5=85=AC=E5=8F=B8=E7=9A=84=E4=BF=9D=E5=AF=86= =E4=BF=A1=E6=81=AF=EF=BC=8C=E4=BB=85=E9=99=90=E4=BA=8E=E9=82=AE=E4=BB=B6=E6= =8C=87=E6=98=8E=E7=9A=84=E6=94=B6=E4=BB=B6=E4=BA=BA=EF=BC=88=E5=8C=85=E5=90= =AB=E4=B8=AA=E4=BA=BA=E5=8F=8A=E7=BE=A4=E7=BB=84=EF=BC=89=E4=BD=BF=E7=94=A8= =E3=80=82=E7=A6=81=E6=AD=A2=E4=BB=BB=E4=BD=95=E4=BA=BA=E5=9C=A8=E6=9C=AA=E7= =BB=8F=E6=8E=88=E6=9D=83=E7=9A=84=E6=83=85=E5=86=B5=E4=B8=8B=E4=BB=A5=E4=BB= =BB=E4=BD=95=E5=BD=A2=E5=BC=8F=E4=BD=BF=E7=94=A8=E3=80=82=E5=A6=82=E6=9E=9C= =E6=82=A8=E9=94=99=E6=94=B6=E4=BA=86=E6=9C=AC=E9=82=AE=E4=BB=B6=EF=BC=8C=E5= =88=87=E5=8B=BF=E4=BC=A0=E6=92=AD=E3=80=81=E5=88=86=E5=8F=91=E3=80=81=E5=A4= =8D=E5=88=B6=E3=80=81=E5=8D=B0=E5=88=B7=E6=88=96=E4=BD=BF=E7=94=A8=E6=9C=AC= =E9=82=AE=E4=BB=B6=E4=B9=8B=E4=BB=BB=E4=BD=95=E9=83=A8=E5=88=86=E6=88=96=E5= =85=B6=E6=89=80=E8=BD=BD=E4=B9=8B=E4=BB=BB=E4=BD=95=E5=86=85=E5=AE=B9=EF=BC= =8C=E5=B9=B6=E8=AF=B7=E7=AB=8B=E5=8D=B3=E4=BB=A5=E7=94=B5=E5=AD=90=E9=82=AE= =E4=BB=B6=E9=80=9A=E7=9F=A5=E5=8F=91=E4=BB=B6=E4=BA=BA=E5=B9=B6=E5=88=A0=E9= =99=A4=E6=9C=AC=E9=82=AE=E4=BB=B6=E5=8F=8A=E5=85=B6=E9=99=84=E4=BB=B6=E3=80= =82 =E7=BD=91=E7=BB=9C=E9=80=9A=E8=AE=AF=E5=9B=BA=E6=9C=89=E7=BC=BA=E9=99=B7=E5= =8F=AF=E8=83=BD=E5=AF=BC=E8=87=B4=E9=82=AE=E4=BB=B6=E8=A2=AB=E6=88=AA=E7=95= =99=E3=80=81=E4=BF=AE=E6=94=B9=E3=80=81=E4=B8=A2=E5=A4=B1=E3=80=81=E7=A0=B4= =E5=9D=8F=E6=88=96=E5=8C=85=E5=90=AB=E8=AE=A1=E7=AE=97=E6=9C=BA=E7=97=85=E6= =AF=92=E7=AD=89=E4=B8=8D=E5=AE=89=E5=85=A8=E6=83=85=E5=86=B5=EF=BC=8COPPO= =E5=AF=B9=E6=AD=A4=E7=B1=BB=E9=94=99=E8=AF=AF=E6=88=96=E9=81=97=E6=BC=8F=E8= =80=8C=E5=BC=95=E8=87=B4=E4=B9=8B=E4=BB=BB=E4=BD=95=E6=8D=9F=E5=A4=B1=E6=A6= =82=E4=B8=8D=E6=89=BF=E6=8B=85=E8=B4=A3=E4=BB=BB=E5=B9=B6=E4=BF=9D=E7=95=99= =E4=B8=8E=E6=9C=AC=E9=82=AE=E4=BB=B6=E7=9B=B8=E5=85=B3=E4=B9=8B=E4=B8=80=E5= =88=87=E6=9D=83=E5=88=A9=E3=80=82 =E9=99=A4=E9=9D=9E=E6=98=8E=E7=A1=AE=E8=AF=B4=E6=98=8E=EF=BC=8C=E6=9C=AC=E9= =82=AE=E4=BB=B6=E5=8F=8A=E5=85=B6=E9=99=84=E4=BB=B6=E6=97=A0=E6=84=8F=E4=BD= =9C=E4=B8=BA=E5=9C=A8=E4=BB=BB=E4=BD=95=E5=9B=BD=E5=AE=B6=E6=88=96=E5=9C=B0= =E5=8C=BA=E4=B9=8B=E8=A6=81=E7=BA=A6=E3=80=81=E6=8B=9B=E6=8F=BD=E6=88=96=E6= =89=BF=E8=AF=BA=EF=BC=8C=E4=BA=A6=E6=97=A0=E6=84=8F=E4=BD=9C=E4=B8=BA=E4=BB= =BB=E4=BD=95=E4=BA=A4=E6=98=93=E6=88=96=E5=90=88=E5=90=8C=E4=B9=8B=E6=AD=A3= =E5=BC=8F=E7=A1=AE=E8=AE=A4=E3=80=82 =E5=8F=91=E4=BB=B6=E4=BA=BA=E3=80=81= =E5=85=B6=E6=89=80=E5=B1=9E=E6=9C=BA=E6=9E=84=E6=88=96=E6=89=80=E5=B1=9E=E6= =9C=BA=E6=9E=84=E4=B9=8B=E5=85=B3=E8=81=94=E6=9C=BA=E6=9E=84=E6=88=96=E4=BB= =BB=E4=BD=95=E4=B8=8A=E8=BF=B0=E6=9C=BA=E6=9E=84=E4=B9=8B=E8=82=A1=E4=B8=9C= =E3=80=81=E8=91=A3=E4=BA=8B=E3=80=81=E9=AB=98=E7=BA=A7=E7=AE=A1=E7=90=86=E4= =BA=BA=E5=91=98=E3=80=81=E5=91=98=E5=B7=A5=E6=88=96=E5=85=B6=E4=BB=96=E4=BB= =BB=E4=BD=95=E4=BA=BA=EF=BC=88=E4=BB=A5=E4=B8=8B=E7=A7=B0=E2=80=9C=E5=8F=91= =E4=BB=B6=E4=BA=BA=E2=80=9D=E6=88=96=E2=80=9COPPO=E2=80=9D=EF=BC=89=E4=B8= =8D=E5=9B=A0=E6=9C=AC=E9=82=AE=E4=BB=B6=E4=B9=8B=E8=AF=AF=E9=80=81=E8=80=8C= =E6=94=BE=E5=BC=83=E5=85=B6=E6=89=80=E4=BA=AB=E4=B9=8B=E4=BB=BB=E4=BD=95=E6= =9D=83=E5=88=A9=EF=BC=8C=E4=BA=A6=E4=B8=8D=E5=AF=B9=E5=9B=A0=E6=95=85=E6=84= =8F=E6=88=96=E8=BF=87=E5=A4=B1=E4=BD=BF=E7=94=A8=E8=AF=A5=E7=AD=89=E4=BF=A1= =E6=81=AF=E8=80=8C=E5=BC=95=E5=8F=91=E6=88=96=E5=8F=AF=E8=83=BD=E5=BC=95=E5= =8F=91=E7=9A=84=E6=8D=9F=E5=A4=B1=E6=89=BF=E6=8B=85=E4=BB=BB=E4=BD=95=E8=B4= =A3=E4=BB=BB=E3=80=82 =E6=96=87=E5=8C=96=E5=B7=AE=E5=BC=82=E6=8A=AB=E9=9C=B2=EF=BC=9A=E5=9B=A0=E5= =85=A8=E7=90=83=E6=96=87=E5=8C=96=E5=B7=AE=E5=BC=82=E5=BD=B1=E5=93=8D=EF=BC= =8C=E5=8D=95=E7=BA=AF=E4=BB=A5YES\OK=E6=88=96=E5=85=B6=E4=BB=96=E7=AE=80=E5= =8D=95=E8=AF=8D=E6=B1=87=E7=9A=84=E5=9B=9E=E5=A4=8D=E5=B9=B6=E4=B8=8D=E6=9E= =84=E6=88=90=E5=8F=91=E4=BB=B6=E4=BA=BA=E5=AF=B9=E4=BB=BB=E4=BD=95=E4=BA=A4= =E6=98=93=E6=88=96=E5=90=88=E5=90=8C=E4=B9=8B=E6=AD=A3=E5=BC=8F=E7=A1=AE=E8= =AE=A4=E6=88=96=E6=8E=A5=E5=8F=97=EF=BC=8C=E8=AF=B7=E4=B8=8E=E5=8F=91=E4=BB= =B6=E4=BA=BA=E5=86=8D=E6=AC=A1=E7=A1=AE=E8=AE=A4=E4=BB=A5=E8=8E=B7=E5=BE=97= =E6=98=8E=E7=A1=AE=E4=B9=A6=E9=9D=A2=E6=84=8F=E8=A7=81=E3=80=82=E5=8F=91=E4= =BB=B6=E4=BA=BA=E4=B8=8D=E5=AF=B9=E4=BB=BB=E4=BD=95=E5=8F=97=E6=96=87=E5=8C= =96=E5=B7=AE=E5=BC=82=E5=BD=B1=E5=93=8D=E8=80=8C=E5=AF=BC=E8=87=B4=E6=95=85= =E6=84=8F=E6=88=96=E9=94=99=E8=AF=AF=E4=BD=BF=E7=94=A8=E8=AF=A5=E7=AD=89=E4= =BF=A1=E6=81=AF=E6=89=80=E9=80=A0=E6=88=90=E7=9A=84=E4=BB=BB=E4=BD=95=E7=9B= =B4=E6=8E=A5=E6=88=96=E9=97=B4=E6=8E=A5=E6=8D=9F=E5=AE=B3=E6=89=BF=E6=8B=85= =E8=B4=A3=E4=BB=BB=E3=80=82 This e-mail and its attachments contain confidential information from OPPO,= which is intended only for the person or entity whose address is listed ab= ove. Any use of the information contained herein in any way (including, but= not limited to, total or partial disclosure, reproduction, or disseminatio= n) by persons other than the intended recipient(s) is prohibited. If you ar= e not the intended recipient, please do not read, copy, distribute, or use = this information. If you have received this transmission in error, please n= otify the sender immediately by reply e-mail and then delete this message. Electronic communications may contain computer viruses or other defects inh= erently, may not be accurately and/or timely transmitted to other systems, = or may be intercepted, modified ,delayed, deleted or interfered. OPPO shall= not be liable for any damages that arise or may arise from such matter and= reserves all rights in connection with the email. Unless expressly stated, this e-mail and its attachments are provided witho= ut any warranty, acceptance or promise of any kind in any country or region= , nor constitute a formal confirmation or acceptance of any transaction or = contract. The sender, together with its affiliates or any shareholder, dire= ctor, officer, employee or any other person of any such institution (herein= after referred to as "sender" or "OPPO") does not waive any rights and shal= l not be liable for any damages that arise or may arise from the intentiona= l or negligent use of such information. Cultural Differences Disclosure: Due to global cultural differences, any re= ply with only YES\OK or other simple words does not constitute any confirma= tion or acceptance of any transaction or contract, please confirm with the = sender again to ensure clear opinion in written form. The sender shall not = be responsible for any direct or indirect damages resulting from the intent= ional or misuse of such information.