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Subject[PATCH] f2fs: run GCs synchronously given user requests
Date
When users set GC_URGENT or GC_MID, they expected to do GCs right away.
But, there's a condition to bypass it. Let's indicate we need to do now
in the thread.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
---
fs/f2fs/gc.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index d5fb426e0747..f4aa3c88118b 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -37,7 +37,6 @@ static int gc_thread_func(void *data)
unsigned int wait_ms;
struct f2fs_gc_control gc_control = {
.victim_segno = NULL_SEGNO,
- .should_migrate_blocks = false,
.err_gc_skipped = false };

wait_ms = gc_th->min_sleep_time;
@@ -113,7 +112,10 @@ static int gc_thread_func(void *data)
sbi->gc_mode == GC_URGENT_MID) {
wait_ms = gc_th->urgent_sleep_time;
f2fs_down_write(&sbi->gc_lock);
+ gc_control.should_migrate_blocks = true;
goto do_gc;
+ } else {
+ gc_control.should_migrate_blocks = false;
}

if (foreground) {
@@ -139,7 +141,9 @@ static int gc_thread_func(void *data)
if (!foreground)
stat_inc_bggc_count(sbi->stat_info);

- sync_mode = F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC;
+ sync_mode = F2FS_OPTION(sbi).bggc_mode == BGGC_MODE_SYNC ||
+ sbi->gc_mode == GC_URGENT_HIGH ||
+ sbi->gc_mode == GC_URGENT_MID;

/* foreground GC was been triggered via f2fs_balance_fs() */
if (foreground)
--
2.36.1.476.g0c4daa206d-goog
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