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authorJaegeuk Kim <jaegeuk@kernel.org>2015-10-05 11:02:54 -0700
committerJaegeuk Kim <jaegeuk@kernel.org>2015-10-09 16:20:57 -0700
commit6aefd93b01379bf0b62f8b38dcf7a21397893833 (patch)
tree1d01c1c728ab42d50282c0d54f86a0ceedef0cd1 /fs/f2fs
parent456b88e4d15de833165cce67c2cdf998139e2fc1 (diff)
downloadop-kernel-dev-6aefd93b01379bf0b62f8b38dcf7a21397893833.zip
op-kernel-dev-6aefd93b01379bf0b62f8b38dcf7a21397893833.tar.gz
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>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/f2fs.h1
-rw-r--r--fs/f2fs/gc.c2
-rw-r--r--fs/f2fs/segment.h4
-rw-r--r--fs/f2fs/super.c21
4 files changed, 20 insertions, 8 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 18e5902..00bd470 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -53,6 +53,7 @@
#define F2FS_MOUNT_NOBARRIER 0x00000800
#define F2FS_MOUNT_FASTBOOT 0x00001000
#define F2FS_MOUNT_EXTENT_CACHE 0x00002000
+#define F2FS_MOUNT_FORCE_FG_GC 0x00004000
#define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option)
#define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option)
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 830d277..e627c19 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -78,7 +78,7 @@ static int gc_thread_func(void *data)
stat_inc_bggc_count(sbi);
/* if return value is not zero, no victim was selected */
- if (f2fs_gc(sbi, false))
+ if (f2fs_gc(sbi, test_opt(sbi, FORCE_FG_GC)))
wait_ms = gc_th->no_gc_sleep_time;
/* balancing f2fs's metadata periodically */
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h
index a294da7..e9afb58 100644
--- a/fs/f2fs/segment.h
+++ b/fs/f2fs/segment.h
@@ -137,10 +137,12 @@ enum {
/*
* BG_GC means the background cleaning job.
* FG_GC means the on-demand cleaning job.
+ * FORCE_FG_GC means on-demand cleaning job in background.
*/
enum {
BG_GC = 0,
- FG_GC
+ FG_GC,
+ FORCE_FG_GC,
};
/* for a function parameter to select a victim segment */
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 16442ec..ba058d0 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -292,11 +292,16 @@ static int parse_options(struct super_block *sb, char *options)
if (!name)
return -ENOMEM;
- if (strlen(name) == 2 && !strncmp(name, "on", 2))
+ if (strlen(name) == 2 && !strncmp(name, "on", 2)) {
set_opt(sbi, BG_GC);
- else if (strlen(name) == 3 && !strncmp(name, "off", 3))
+ clear_opt(sbi, FORCE_FG_GC);
+ } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) {
clear_opt(sbi, BG_GC);
- else {
+ clear_opt(sbi, FORCE_FG_GC);
+ } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) {
+ set_opt(sbi, BG_GC);
+ set_opt(sbi, FORCE_FG_GC);
+ } else {
kfree(name);
return -EINVAL;
}
@@ -631,10 +636,14 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root)
{
struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb);
- if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC))
- seq_printf(seq, ",background_gc=%s", "on");
- else
+ if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) {
+ if (test_opt(sbi, FORCE_FG_GC))
+ seq_printf(seq, ",background_gc=%s", "sync");
+ else
+ seq_printf(seq, ",background_gc=%s", "on");
+ } else {
seq_printf(seq, ",background_gc=%s", "off");
+ }
if (test_opt(sbi, DISABLE_ROLL_FORWARD))
seq_puts(seq, ",disable_roll_forward");
if (test_opt(sbi, DISCARD))
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