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f2fs: introduce background_gc=sync mount option
This patch introduce background_gc=sync enabling synchronous cleaning in background. Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
parent
456b88e4d1
commit
6aefd93b01
5 changed files with 22 additions and 9 deletions
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@ -102,7 +102,8 @@ background_gc=%s Turn on/off cleaning operations, namely garbage
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collection, triggered in background when I/O subsystem is
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idle. If background_gc=on, it will turn on the garbage
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collection and if background_gc=off, garbage collection
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will be truned off.
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will be truned off. If background_gc=sync, it will turn
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on synchronous garbage collection running in background.
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Default value for this option is on. So garbage
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collection is on by default.
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disable_roll_forward Disable the roll-forward recovery routine
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@ -53,6 +53,7 @@
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#define F2FS_MOUNT_NOBARRIER 0x00000800
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#define F2FS_MOUNT_FASTBOOT 0x00001000
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#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
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#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
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#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
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#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
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@ -78,7 +78,7 @@ static int gc_thread_func(void *data)
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stat_inc_bggc_count(sbi);
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/* if return value is not zero, no victim was selected */
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if (f2fs_gc(sbi, false))
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if (f2fs_gc(sbi, test_opt(sbi, FORCE_FG_GC)))
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wait_ms = gc_th->no_gc_sleep_time;
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/* balancing f2fs's metadata periodically */
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@ -137,10 +137,12 @@ enum {
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/*
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* BG_GC means the background cleaning job.
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* FG_GC means the on-demand cleaning job.
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* FORCE_FG_GC means on-demand cleaning job in background.
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*/
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enum {
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BG_GC = 0,
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FG_GC
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FG_GC,
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FORCE_FG_GC,
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};
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/* for a function parameter to select a victim segment */
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@ -292,11 +292,16 @@ static int parse_options(struct super_block *sb, char *options)
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if (!name)
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return -ENOMEM;
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if (strlen(name) == 2 && !strncmp(name, "on", 2))
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if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
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set_opt(sbi, BG_GC);
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else if (strlen(name) == 3 && !strncmp(name, "off", 3))
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clear_opt(sbi, FORCE_FG_GC);
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} else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
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clear_opt(sbi, BG_GC);
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else {
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clear_opt(sbi, FORCE_FG_GC);
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} else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
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set_opt(sbi, BG_GC);
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set_opt(sbi, FORCE_FG_GC);
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} else {
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kfree(name);
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return -EINVAL;
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}
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@ -631,10 +636,14 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
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{
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struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
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if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC))
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seq_printf(seq, ",background_gc=%s", "on");
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else
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if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
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if (test_opt(sbi, FORCE_FG_GC))
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seq_printf(seq, ",background_gc=%s", "sync");
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else
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seq_printf(seq, ",background_gc=%s", "on");
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} else {
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seq_printf(seq, ",background_gc=%s", "off");
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}
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if (test_opt(sbi, DISABLE_ROLL_FORWARD))
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seq_puts(seq, ",disable_roll_forward");
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if (test_opt(sbi, DISCARD))
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