f2fs: remove obsolete whint_mode

This patch removes obsolete whint_mode.

Fixes: 41d36a9f3e53 ("fs: remove kiocb.ki_hint")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst
index 4a2426f..ad8dc8c 100644 (file)
--- a/Documentation/filesystems/f2fs.rst
+++ b/Documentation/filesystems/f2fs.rst
@@ -235,12 +235,6 @@ offgrpjquota                Turn off group journalled quota.
 offprjjquota            Turn off project journalled quota.
 quota                   Enable plain user disk quota accounting.
 noquota                         Disable all plain disk quota option.
-whint_mode=%s           Control which write hints are passed down to block
-                        layer. This supports "off", "user-based", and
-                        "fs-based".  In "off" mode (default), f2fs does not pass
-                        down hints. In "user-based" mode, f2fs tries to pass
-                        down hints given by users. And in "fs-based" mode, f2fs
-                        passes down hints with its policy.
 alloc_mode=%s           Adjust block allocation policy, which supports "reuse"
                         and "default".
 fsync_mode=%s           Control the policy of fsync. Currently supports "posix",
@@ -751,70 +745,6 @@ In order to identify whether the data in the victim segment are valid or not,
 F2FS manages a bitmap. Each bit represents the validity of a block, and the
 bitmap is composed of a bit stream covering whole blocks in main area.
 
-Write-hint Policy
------------------
-
-1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
-
-2) whint_mode=user-based. F2FS tries to pass down hints given by
-users.
-
-===================== ======================== ===================
-User                  F2FS                     Block
-===================== ======================== ===================
-N/A                   META                     WRITE_LIFE_NOT_SET
-N/A                   HOT_NODE                 "
-N/A                   WARM_NODE                "
-N/A                   COLD_NODE                "
-ioctl(COLD)           COLD_DATA                WRITE_LIFE_EXTREME
-extension list        "                        "
-
--- buffered io
-WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
-WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
-WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
-WRITE_LIFE_NONE       "                        "
-WRITE_LIFE_MEDIUM     "                        "
-WRITE_LIFE_LONG       "                        "
-
--- direct io
-WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
-WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
-WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
-WRITE_LIFE_NONE       "                        WRITE_LIFE_NONE
-WRITE_LIFE_MEDIUM     "                        WRITE_LIFE_MEDIUM
-WRITE_LIFE_LONG       "                        WRITE_LIFE_LONG
-===================== ======================== ===================
-
-3) whint_mode=fs-based. F2FS passes down hints with its policy.
-
-===================== ======================== ===================
-User                  F2FS                     Block
-===================== ======================== ===================
-N/A                   META                     WRITE_LIFE_MEDIUM;
-N/A                   HOT_NODE                 WRITE_LIFE_NOT_SET
-N/A                   WARM_NODE                "
-N/A                   COLD_NODE                WRITE_LIFE_NONE
-ioctl(COLD)           COLD_DATA                WRITE_LIFE_EXTREME
-extension list        "                        "
-
--- buffered io
-WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
-WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
-WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_LONG
-WRITE_LIFE_NONE       "                        "
-WRITE_LIFE_MEDIUM     "                        "
-WRITE_LIFE_LONG       "                        "
-
--- direct io
-WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
-WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
-WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
-WRITE_LIFE_NONE       "                        WRITE_LIFE_NONE
-WRITE_LIFE_MEDIUM     "                        WRITE_LIFE_MEDIUM
-WRITE_LIFE_LONG       "                        WRITE_LIFE_LONG
-===================== ======================== ===================
-
 Fallocate(2) Policy
 -------------------
 

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index cd1e65b..8c570de 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -154,7 +154,6 @@ struct f2fs_mount_info {
        int s_jquota_fmt;                       /* Format of quota to use */
 #endif
        /* For which write hints are passed down to block layer */
-       int whint_mode;
        int alloc_mode;                 /* segment allocation policy */
        int fsync_mode;                 /* fsync policy */
        int fs_mode;                    /* fs mode: LFS or ADAPTIVE */
@@ -1333,12 +1332,6 @@ enum {
        FS_MODE_FRAGMENT_BLK,           /* block fragmentation mode */
 };
 
-enum {
-       WHINT_MODE_OFF,         /* not pass down write hints */
-       WHINT_MODE_USER,        /* try to pass down hints given by users */
-       WHINT_MODE_FS,          /* pass down hints with F2FS policy */
-};
-
 enum {
        ALLOC_MODE_DEFAULT,     /* stay default */
        ALLOC_MODE_REUSE,       /* reuse segments as much as possible */
@@ -3657,8 +3650,6 @@ void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
 int __init f2fs_create_segment_manager_caches(void);
 void f2fs_destroy_segment_manager_caches(void);
 int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
-enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
-                       enum page_type type, enum temp_type temp);
 unsigned int f2fs_usable_segs_in_sec(struct f2fs_sb_info *sbi,
                        unsigned int segno);
 unsigned int f2fs_usable_blks_in_seg(struct f2fs_sb_info *sbi,

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 22dfeb9..bd9731c 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -3243,101 +3243,6 @@ int f2fs_rw_hint_to_seg_type(enum rw_hint hint)
        }
 }
 
-/* This returns write hints for each segment type. This hints will be
- * passed down to block layer. There are mapping tables which depend on
- * the mount option 'whint_mode'.
- *
- * 1) whint_mode=off. F2FS only passes down WRITE_LIFE_NOT_SET.
- *
- * 2) whint_mode=user-based. F2FS tries to pass down hints given by users.
- *
- * User                  F2FS                     Block
- * ----                  ----                     -----
- *                       META                     WRITE_LIFE_NOT_SET
- *                       HOT_NODE                 "
- *                       WARM_NODE                "
- *                       COLD_NODE                "
- * ioctl(COLD)           COLD_DATA                WRITE_LIFE_EXTREME
- * extension list        "                        "
- *
- * -- buffered io
- * WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
- * WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
- * WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
- * WRITE_LIFE_NONE       "                        "
- * WRITE_LIFE_MEDIUM     "                        "
- * WRITE_LIFE_LONG       "                        "
- *
- * -- direct io
- * WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
- * WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
- * WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
- * WRITE_LIFE_NONE       "                        WRITE_LIFE_NONE
- * WRITE_LIFE_MEDIUM     "                        WRITE_LIFE_MEDIUM
- * WRITE_LIFE_LONG       "                        WRITE_LIFE_LONG
- *
- * 3) whint_mode=fs-based. F2FS passes down hints with its policy.
- *
- * User                  F2FS                     Block
- * ----                  ----                     -----
- *                       META                     WRITE_LIFE_MEDIUM;
- *                       HOT_NODE                 WRITE_LIFE_NOT_SET
- *                       WARM_NODE                "
- *                       COLD_NODE                WRITE_LIFE_NONE
- * ioctl(COLD)           COLD_DATA                WRITE_LIFE_EXTREME
- * extension list        "                        "
- *
- * -- buffered io
- * WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
- * WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
- * WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_LONG
- * WRITE_LIFE_NONE       "                        "
- * WRITE_LIFE_MEDIUM     "                        "
- * WRITE_LIFE_LONG       "                        "
- *
- * -- direct io
- * WRITE_LIFE_EXTREME    COLD_DATA                WRITE_LIFE_EXTREME
- * WRITE_LIFE_SHORT      HOT_DATA                 WRITE_LIFE_SHORT
- * WRITE_LIFE_NOT_SET    WARM_DATA                WRITE_LIFE_NOT_SET
- * WRITE_LIFE_NONE       "                        WRITE_LIFE_NONE
- * WRITE_LIFE_MEDIUM     "                        WRITE_LIFE_MEDIUM
- * WRITE_LIFE_LONG       "                        WRITE_LIFE_LONG
- */
-
-enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
-                               enum page_type type, enum temp_type temp)
-{
-       if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER) {
-               if (type == DATA) {
-                       if (temp == WARM)
-                               return WRITE_LIFE_NOT_SET;
-                       else if (temp == HOT)
-                               return WRITE_LIFE_SHORT;
-                       else if (temp == COLD)
-                               return WRITE_LIFE_EXTREME;
-               } else {
-                       return WRITE_LIFE_NOT_SET;
-               }
-       } else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS) {
-               if (type == DATA) {
-                       if (temp == WARM)
-                               return WRITE_LIFE_LONG;
-                       else if (temp == HOT)
-                               return WRITE_LIFE_SHORT;
-                       else if (temp == COLD)
-                               return WRITE_LIFE_EXTREME;
-               } else if (type == NODE) {
-                       if (temp == WARM || temp == HOT)
-                               return WRITE_LIFE_NOT_SET;
-                       else if (temp == COLD)
-                               return WRITE_LIFE_NONE;
-               } else if (type == META) {
-                       return WRITE_LIFE_MEDIUM;
-               }
-       }
-       return WRITE_LIFE_NOT_SET;
-}
-
 static int __get_segment_type_2(struct f2fs_io_info *fio)
 {
        if (fio->type == DATA)

diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index ea939db..4368f90 100644 (file)
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -138,7 +138,6 @@ enum {
        Opt_jqfmt_vfsold,
        Opt_jqfmt_vfsv0,
        Opt_jqfmt_vfsv1,
-       Opt_whint,
        Opt_alloc,
        Opt_fsync,
        Opt_test_dummy_encryption,
@@ -214,7 +213,6 @@ static match_table_t f2fs_tokens = {
        {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
        {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
        {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
-       {Opt_whint, "whint_mode=%s"},
        {Opt_alloc, "alloc_mode=%s"},
        {Opt_fsync, "fsync_mode=%s"},
        {Opt_test_dummy_encryption, "test_dummy_encryption=%s"},
@@ -975,22 +973,6 @@ static int parse_options(struct super_block *sb, char *options, bool is_remount)
                        f2fs_info(sbi, "quota operations not supported");
                        break;
 #endif
-               case Opt_whint:
-                       name = match_strdup(&args[0]);
-                       if (!name)
-                               return -ENOMEM;
-                       if (!strcmp(name, "user-based")) {
-                               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_USER;
-                       } else if (!strcmp(name, "off")) {
-                               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
-                       } else if (!strcmp(name, "fs-based")) {
-                               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_FS;
-                       } else {
-                               kfree(name);
-                               return -EINVAL;
-                       }
-                       kfree(name);
-                       break;
                case Opt_alloc:
                        name = match_strdup(&args[0]);
                        if (!name)
@@ -1328,12 +1310,6 @@ default_check:
                return -EINVAL;
        }
 
-       /* Not pass down write hints if the number of active logs is lesser
-        * than NR_CURSEG_PERSIST_TYPE.
-        */
-       if (F2FS_OPTION(sbi).active_logs != NR_CURSEG_PERSIST_TYPE)
-               F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
-
        if (f2fs_sb_has_readonly(sbi) && !f2fs_readonly(sbi->sb)) {
                f2fs_err(sbi, "Allow to mount readonly mode only");
                return -EROFS;
@@ -1978,10 +1954,6 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
                seq_puts(seq, ",prjquota");
 #endif
        f2fs_show_quota_options(seq, sbi->sb);
-       if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_USER)
-               seq_printf(seq, ",whint_mode=%s", "user-based");
-       else if (F2FS_OPTION(sbi).whint_mode == WHINT_MODE_FS)
-               seq_printf(seq, ",whint_mode=%s", "fs-based");
 
        fscrypt_show_test_dummy_encryption(seq, ',', sbi->sb);
 
@@ -2033,7 +2005,6 @@ static void default_options(struct f2fs_sb_info *sbi)
                F2FS_OPTION(sbi).active_logs = NR_CURSEG_PERSIST_TYPE;
 
        F2FS_OPTION(sbi).inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
-       F2FS_OPTION(sbi).whint_mode = WHINT_MODE_OFF;
        F2FS_OPTION(sbi).alloc_mode = ALLOC_MODE_DEFAULT;
        F2FS_OPTION(sbi).fsync_mode = FSYNC_MODE_POSIX;
        F2FS_OPTION(sbi).s_resuid = make_kuid(&init_user_ns, F2FS_DEF_RESUID);
@@ -2314,8 +2285,7 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data)
                need_stop_gc = true;
        }
 
-       if (*flags & SB_RDONLY ||
-               F2FS_OPTION(sbi).whint_mode != org_mount_opt.whint_mode) {
+       if (*flags & SB_RDONLY) {
                sync_inodes_sb(sb);
 
                set_sbi_flag(sbi, SBI_IS_DIRTY);