diff options
Diffstat (limited to 'patches.tizen/0509-f2fs-add-proc-entry-to-monitor-current-usage-of-segm.patch')
| -rw-r--r-- | patches.tizen/0509-f2fs-add-proc-entry-to-monitor-current-usage-of-segm.patch | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/patches.tizen/0509-f2fs-add-proc-entry-to-monitor-current-usage-of-segm.patch b/patches.tizen/0509-f2fs-add-proc-entry-to-monitor-current-usage-of-segm.patch new file mode 100644 index 00000000000..39c609594e8 --- /dev/null +++ b/patches.tizen/0509-f2fs-add-proc-entry-to-monitor-current-usage-of-segm.patch @@ -0,0 +1,129 @@ +From f0ad478976d102744a56addb8fdc7ba316c3fc93 Mon Sep 17 00:00:00 2001 +From: Jaegeuk Kim <jaegeuk.kim@samsung.com> +Date: Fri, 28 Jun 2013 12:47:01 +0900 +Subject: [PATCH 0509/1302] f2fs: add proc entry to monitor current usage of + segments + +You can monitor valid block counts of whole segments in: + /proc/fs/f2fs/sdb1/segment_info. + +Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + fs/f2fs/f2fs.h | 1 + + fs/f2fs/super.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 47 insertions(+) + +diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h +index 467d42d..c7620b9 100644 +--- a/fs/f2fs/f2fs.h ++++ b/fs/f2fs/f2fs.h +@@ -350,6 +350,7 @@ enum page_type { + + struct f2fs_sb_info { + struct super_block *sb; /* pointer to VFS super block */ ++ struct proc_dir_entry *s_proc; /* proc entry */ + struct buffer_head *raw_super_buf; /* buffer head of raw sb */ + struct f2fs_super_block *raw_super; /* raw super block pointer */ + int s_dirty; /* dirty flag for checkpoint */ +diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c +index 75c7dc3..70dbb31 100644 +--- a/fs/f2fs/super.c ++++ b/fs/f2fs/super.c +@@ -18,6 +18,7 @@ + #include <linux/parser.h> + #include <linux/mount.h> + #include <linux/seq_file.h> ++#include <linux/proc_fs.h> + #include <linux/random.h> + #include <linux/exportfs.h> + #include <linux/blkdev.h> +@@ -31,6 +32,7 @@ + #define CREATE_TRACE_POINTS + #include <trace/events/f2fs.h> + ++static struct proc_dir_entry *f2fs_proc_root; + static struct kmem_cache *f2fs_inode_cachep; + + enum { +@@ -223,6 +225,11 @@ static void f2fs_put_super(struct super_block *sb) + { + struct f2fs_sb_info *sbi = F2FS_SB(sb); + ++ if (sbi->s_proc) { ++ remove_proc_entry("segment_info", sbi->s_proc); ++ remove_proc_entry(sb->s_id, f2fs_proc_root); ++ } ++ + f2fs_destroy_stats(sbi); + stop_gc_thread(sbi); + +@@ -340,6 +347,36 @@ static int f2fs_show_options(struct seq_file *seq, struct dentry *root) + return 0; + } + ++static int segment_info_seq_show(struct seq_file *seq, void *offset) ++{ ++ struct super_block *sb = seq->private; ++ struct f2fs_sb_info *sbi = F2FS_SB(sb); ++ unsigned int total_segs = le32_to_cpu(sbi->raw_super->segment_count_main); ++ int i; ++ ++ for (i = 0; i < total_segs; i++) { ++ seq_printf(seq, "%u", get_valid_blocks(sbi, i, 1)); ++ if (i != 0 && (i % 10) == 0) ++ seq_puts(seq, "\n"); ++ else ++ seq_puts(seq, " "); ++ } ++ return 0; ++} ++ ++static int segment_info_open_fs(struct inode *inode, struct file *file) ++{ ++ return single_open(file, segment_info_seq_show, PDE_DATA(inode)); ++} ++ ++static const struct file_operations f2fs_seq_segment_info_fops = { ++ .owner = THIS_MODULE, ++ .open = segment_info_open_fs, ++ .read = seq_read, ++ .llseek = seq_lseek, ++ .release = single_release, ++}; ++ + static int f2fs_remount(struct super_block *sb, int *flags, char *data) + { + struct f2fs_sb_info *sbi = F2FS_SB(sb); +@@ -766,6 +803,13 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) + if (err) + goto fail; + ++ if (f2fs_proc_root) ++ sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); ++ ++ if (sbi->s_proc) ++ proc_create_data("segment_info", S_IRUGO, sbi->s_proc, ++ &f2fs_seq_segment_info_fops, sb); ++ + if (test_opt(sbi, DISCARD)) { + struct request_queue *q = bdev_get_queue(sb->s_bdev); + if (!blk_queue_discard(q)) +@@ -852,12 +896,14 @@ static int __init init_f2fs_fs(void) + if (err) + goto fail; + f2fs_create_root_stats(); ++ f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); + fail: + return err; + } + + static void __exit exit_f2fs_fs(void) + { ++ remove_proc_entry("fs/f2fs", NULL); + f2fs_destroy_root_stats(); + unregister_filesystem(&f2fs_fs_type); + destroy_checkpoint_caches(); +-- +1.8.3.2 + |