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authorNamjae Jeon <namjae.jeon@samsung.com>2013-02-02 09:52:28 -0500
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-02-11 17:15:02 -0500
commitec7b1f2dd180afb1ce23aa44a7451e59bf2f3eb3 (patch)
tree2f9a08b3f69b1ee5fa2ec2dfba8ef0d7268f33df /fs/f2fs
parent48600e44c18e4eb0f7c02ec8633c4c56aef292f0 (diff)
f2fs: name gc task as per the block device
Currently GC task is started for each f2fs formatted/mounted device. But, when we check the task list, using 'ps', there is no distinguishing factor between the tasks. So, name the task as per the block device just like the flusher threads. Also, remove the macro GC_THREAD_NAME and instead use the name: f2fs_gc to avoid name length truncation, as the command length is 16 -> TASK_COMM_LEN 16 and example name like: f2fs_gc_task:8:16 -> this exceeds name length Before Patch for 2 F2FS formatted partitions: root 28061 0.0 0.0 0 0 ? S 10:31 0:00 [f2fs_gc_task] root 28087 0.0 0.0 0 0 ? S 10:32 0:00 [f2fs_gc_task] After Patch: root 16756 0.0 0.0 0 0 ? S 14:57 0:00 [f2fs_gc-8:18] root 16765 0.0 0.0 0 0 ? S 14:57 0:00 [f2fs_gc-8:19] Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/gc.c3
-rw-r--r--fs/f2fs/gc.h1
2 files changed, 2 insertions, 2 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 8d293cb685ba..b1e498503e59 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -90,6 +90,7 @@ static int gc_thread_func(void *data)
90int start_gc_thread(struct f2fs_sb_info *sbi) 90int start_gc_thread(struct f2fs_sb_info *sbi)
91{ 91{
92 struct f2fs_gc_kthread *gc_th; 92 struct f2fs_gc_kthread *gc_th;
93 dev_t dev = sbi->sb->s_bdev->bd_dev;
93 94
94 if (!test_opt(sbi, BG_GC)) 95 if (!test_opt(sbi, BG_GC))
95 return 0; 96 return 0;
@@ -100,7 +101,7 @@ int start_gc_thread(struct f2fs_sb_info *sbi)
100 sbi->gc_thread = gc_th; 101 sbi->gc_thread = gc_th;
101 init_waitqueue_head(&sbi->gc_thread->gc_wait_queue_head); 102 init_waitqueue_head(&sbi->gc_thread->gc_wait_queue_head);
102 sbi->gc_thread->f2fs_gc_task = kthread_run(gc_thread_func, sbi, 103 sbi->gc_thread->f2fs_gc_task = kthread_run(gc_thread_func, sbi,
103 GC_THREAD_NAME); 104 "f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev));
104 if (IS_ERR(gc_th->f2fs_gc_task)) { 105 if (IS_ERR(gc_th->f2fs_gc_task)) {
105 kfree(gc_th); 106 kfree(gc_th);
106 return -ENOMEM; 107 return -ENOMEM;
diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h
index b026d9354ccd..3abdf83b5c16 100644
--- a/fs/f2fs/gc.h
+++ b/fs/f2fs/gc.h
@@ -8,7 +8,6 @@
8 * it under the terms of the GNU General Public License version 2 as 8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation. 9 * published by the Free Software Foundation.
10 */ 10 */
11#define GC_THREAD_NAME "f2fs_gc_task"
12#define GC_THREAD_MIN_WB_PAGES 1 /* 11#define GC_THREAD_MIN_WB_PAGES 1 /*
13 * a threshold to determine 12 * a threshold to determine
14 * whether IO subsystem is idle 13 * whether IO subsystem is idle