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f2fs: Add f2fs stats to sysfs
Currently f2fs stats are only available from /d/f2fs/status. This patch adds some of the f2fs stats to sysfs so that they are accessible even when debugfs is not mounted. The following sysfs nodes are added: -/sys/fs/f2fs/<disk>/free_segments -/sys/fs/f2fs/<disk>/cp_foreground_calls -/sys/fs/f2fs/<disk>/cp_background_calls -/sys/fs/f2fs/<disk>/gc_foreground_calls -/sys/fs/f2fs/<disk>/gc_background_calls -/sys/fs/f2fs/<disk>/moved_blocks_foreground -/sys/fs/f2fs/<disk>/moved_blocks_background -/sys/fs/f2fs/<disk>/avg_vblocks Signed-off-by: Hridya Valsaraju <hridya@google.com> [Jaegeuk Kim: allow STAT_FS without DEBUG_FS] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Hridya Valsaraju
Jaegeuk Kim
parent
f5fa7c8bb6
commit
fc7100ea2a
@ -271,3 +271,50 @@ Date July 2019
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Contact: "Daniel Rosenberg" <drosen@google.com>
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Description: Displays name and version of the encoding set for the filesystem.
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If no encoding is set, displays (none)
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What: /sys/fs/f2fs/<disk>/free_segments
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of free segments in disk.
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What: /sys/fs/f2fs/<disk>/cp_foreground_calls
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of checkpoint operations performed on demand. Available when
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CONFIG_F2FS_STAT_FS=y.
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What: /sys/fs/f2fs/<disk>/cp_background_calls
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of checkpoint operations performed in the background to
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free segments. Available when CONFIG_F2FS_STAT_FS=y.
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What: /sys/fs/f2fs/<disk>/gc_foreground_calls
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of garbage collection operations performed on demand.
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Available when CONFIG_F2FS_STAT_FS=y.
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What: /sys/fs/f2fs/<disk>/gc_background_calls
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of garbage collection operations triggered in background.
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Available when CONFIG_F2FS_STAT_FS=y.
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What: /sys/fs/f2fs/<disk>/moved_blocks_foreground
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of blocks moved by garbage collection in foreground.
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Available when CONFIG_F2FS_STAT_FS=y.
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What: /sys/fs/f2fs/<disk>/moved_blocks_background
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Number of blocks moved by garbage collection in background.
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Available when CONFIG_F2FS_STAT_FS=y.
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What: /sys/fs/f2fs/<disk>/avg_vblocks
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Date: September 2019
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Contact: "Hridya Valsaraju" <hridya@google.com>
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Description: Average number of valid blocks.
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Available when CONFIG_F2FS_STAT_FS=y.
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@ -21,7 +21,7 @@ config F2FS_FS
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config F2FS_STAT_FS
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bool "F2FS Status Information"
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depends on F2FS_FS && DEBUG_FS
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depends on F2FS_FS
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default y
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help
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/sys/kernel/debug/f2fs/ contains information about all the partitions
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@ -21,9 +21,45 @@
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#include "gc.h"
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static LIST_HEAD(f2fs_stat_list);
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static struct dentry *f2fs_debugfs_root;
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static DEFINE_MUTEX(f2fs_stat_mutex);
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#ifdef CONFIG_DEBUG_FS
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static struct dentry *f2fs_debugfs_root;
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#endif
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/*
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* This function calculates BDF of every segments
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*/
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void f2fs_update_sit_info(struct f2fs_sb_info *sbi)
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{
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struct f2fs_stat_info *si = F2FS_STAT(sbi);
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unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
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unsigned long long bimodal, dist;
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unsigned int segno, vblocks;
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int ndirty = 0;
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bimodal = 0;
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total_vblocks = 0;
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blks_per_sec = BLKS_PER_SEC(sbi);
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hblks_per_sec = blks_per_sec / 2;
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for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
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vblocks = get_valid_blocks(sbi, segno, true);
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dist = abs(vblocks - hblks_per_sec);
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bimodal += dist * dist;
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if (vblocks > 0 && vblocks < blks_per_sec) {
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total_vblocks += vblocks;
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ndirty++;
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}
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}
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dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
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si->bimodal = div64_u64(bimodal, dist);
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if (si->dirty_count)
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si->avg_vblocks = div_u64(total_vblocks, ndirty);
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else
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si->avg_vblocks = 0;
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}
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#ifdef CONFIG_DEBUG_FS
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static void update_general_status(struct f2fs_sb_info *sbi)
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{
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struct f2fs_stat_info *si = F2FS_STAT(sbi);
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@ -116,7 +152,6 @@ static void update_general_status(struct f2fs_sb_info *sbi)
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si->free_nids = NM_I(sbi)->nid_cnt[FREE_NID];
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si->avail_nids = NM_I(sbi)->available_nids;
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si->alloc_nids = NM_I(sbi)->nid_cnt[PREALLOC_NID];
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si->bg_gc = sbi->bg_gc;
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si->io_skip_bggc = sbi->io_skip_bggc;
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si->other_skip_bggc = sbi->other_skip_bggc;
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si->skipped_atomic_files[BG_GC] = sbi->skipped_atomic_files[BG_GC];
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@ -147,39 +182,6 @@ static void update_general_status(struct f2fs_sb_info *sbi)
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si->inplace_count = atomic_read(&sbi->inplace_count);
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}
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/*
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* This function calculates BDF of every segments
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*/
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static void update_sit_info(struct f2fs_sb_info *sbi)
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{
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struct f2fs_stat_info *si = F2FS_STAT(sbi);
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unsigned long long blks_per_sec, hblks_per_sec, total_vblocks;
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unsigned long long bimodal, dist;
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unsigned int segno, vblocks;
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int ndirty = 0;
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bimodal = 0;
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total_vblocks = 0;
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blks_per_sec = BLKS_PER_SEC(sbi);
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hblks_per_sec = blks_per_sec / 2;
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for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) {
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vblocks = get_valid_blocks(sbi, segno, true);
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dist = abs(vblocks - hblks_per_sec);
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bimodal += dist * dist;
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if (vblocks > 0 && vblocks < blks_per_sec) {
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total_vblocks += vblocks;
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ndirty++;
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}
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}
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dist = div_u64(MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec, 100);
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si->bimodal = div64_u64(bimodal, dist);
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if (si->dirty_count)
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si->avg_vblocks = div_u64(total_vblocks, ndirty);
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else
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si->avg_vblocks = 0;
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}
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/*
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* This function calculates memory footprint.
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*/
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@ -445,7 +447,7 @@ static int stat_show(struct seq_file *s, void *v)
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si->block_count[LFS], si->segment_count[LFS]);
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/* segment usage info */
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update_sit_info(si->sbi);
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f2fs_update_sit_info(si->sbi);
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seq_printf(s, "\nBDF: %u, avg. vblocks: %u\n",
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si->bimodal, si->avg_vblocks);
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@ -465,6 +467,7 @@ static int stat_show(struct seq_file *s, void *v)
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}
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DEFINE_SHOW_ATTRIBUTE(stat);
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#endif
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int f2fs_build_stats(struct f2fs_sb_info *sbi)
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{
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@ -525,14 +528,18 @@ void f2fs_destroy_stats(struct f2fs_sb_info *sbi)
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void __init f2fs_create_root_stats(void)
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{
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#ifdef CONFIG_DEBUG_FS
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f2fs_debugfs_root = debugfs_create_dir("f2fs", NULL);
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debugfs_create_file("status", S_IRUGO, f2fs_debugfs_root, NULL,
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&stat_fops);
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#endif
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}
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void f2fs_destroy_root_stats(void)
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{
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#ifdef CONFIG_DEBUG_FS
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debugfs_remove_recursive(f2fs_debugfs_root);
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f2fs_debugfs_root = NULL;
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#endif
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}
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@ -1435,7 +1435,6 @@ struct f2fs_sb_info {
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atomic_t vw_cnt; /* # of volatile writes */
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atomic_t max_aw_cnt; /* max # of atomic writes */
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atomic_t max_vw_cnt; /* max # of volatile writes */
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int bg_gc; /* background gc calls */
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unsigned int io_skip_bggc; /* skip background gc for in-flight IO */
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unsigned int other_skip_bggc; /* skip background gc for other reasons */
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unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */
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@ -3460,7 +3459,7 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
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#define stat_inc_cp_count(si) ((si)->cp_count++)
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#define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++)
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#define stat_inc_call_count(si) ((si)->call_count++)
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#define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++)
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#define stat_inc_bggc_count(si) ((si)->bg_gc++)
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#define stat_io_skip_bggc_count(sbi) ((sbi)->io_skip_bggc++)
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#define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
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#define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
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@ -3584,6 +3583,7 @@ int f2fs_build_stats(struct f2fs_sb_info *sbi);
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void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
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void __init f2fs_create_root_stats(void);
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void f2fs_destroy_root_stats(void);
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void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
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#else
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#define stat_inc_cp_count(si) do { } while (0)
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#define stat_inc_bg_cp_count(si) do { } while (0)
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@ -3593,8 +3593,8 @@ void f2fs_destroy_root_stats(void);
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#define stat_other_skip_bggc_count(sbi) do { } while (0)
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#define stat_inc_dirty_inode(sbi, type) do { } while (0)
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#define stat_dec_dirty_inode(sbi, type) do { } while (0)
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#define stat_inc_total_hit(sb) do { } while (0)
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#define stat_inc_rbtree_node_hit(sb) do { } while (0)
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#define stat_inc_total_hit(sbi) do { } while (0)
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#define stat_inc_rbtree_node_hit(sbi) do { } while (0)
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#define stat_inc_largest_node_hit(sbi) do { } while (0)
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#define stat_inc_cached_node_hit(sbi) do { } while (0)
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#define stat_inc_inline_xattr(inode) do { } while (0)
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@ -3626,6 +3626,7 @@ static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
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static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
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static inline void __init f2fs_create_root_stats(void) { }
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static inline void f2fs_destroy_root_stats(void) { }
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static inline void update_sit_info(struct f2fs_sb_info *sbi) {}
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#endif
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extern const struct file_operations f2fs_dir_operations;
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@ -99,7 +99,7 @@ static int gc_thread_func(void *data)
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else
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increase_sleep_time(gc_th, &wait_ms);
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do_gc:
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stat_inc_bggc_count(sbi);
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stat_inc_bggc_count(sbi->stat_info);
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/* if return value is not zero, no victim was selected */
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if (f2fs_gc(sbi, test_opt(sbi, FORCE_FG_GC), true, NULL_SEGNO))
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139
fs/f2fs/sysfs.c
139
fs/f2fs/sysfs.c
@ -25,6 +25,9 @@ enum {
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DCC_INFO, /* struct discard_cmd_control */
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NM_INFO, /* struct f2fs_nm_info */
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F2FS_SBI, /* struct f2fs_sb_info */
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#ifdef CONFIG_F2FS_STAT_FS
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STAT_INFO, /* struct f2fs_stat_info */
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#endif
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#ifdef CONFIG_F2FS_FAULT_INJECTION
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FAULT_INFO_RATE, /* struct f2fs_fault_info */
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FAULT_INFO_TYPE, /* struct f2fs_fault_info */
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@ -42,6 +45,9 @@ struct f2fs_attr {
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int id;
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};
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static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf);
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static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
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{
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if (struct_type == GC_THREAD)
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@ -58,6 +64,10 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
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else if (struct_type == FAULT_INFO_RATE ||
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struct_type == FAULT_INFO_TYPE)
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return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
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#endif
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#ifdef CONFIG_F2FS_STAT_FS
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else if (struct_type == STAT_INFO)
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return (unsigned char *)F2FS_STAT(sbi);
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#endif
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return NULL;
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}
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@ -65,35 +75,15 @@ static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
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static ssize_t dirty_segments_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%llu\n",
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(unsigned long long)(dirty_segments(sbi)));
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return sprintf(buf, "%llu\n",
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(unsigned long long)(dirty_segments(sbi)));
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}
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static ssize_t unusable_show(struct f2fs_attr *a,
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static ssize_t free_segments_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf)
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{
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block_t unusable;
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if (test_opt(sbi, DISABLE_CHECKPOINT))
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unusable = sbi->unusable_block_count;
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else
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unusable = f2fs_get_unusable_blocks(sbi);
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return snprintf(buf, PAGE_SIZE, "%llu\n",
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(unsigned long long)unusable);
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}
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static ssize_t encoding_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf)
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{
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#ifdef CONFIG_UNICODE
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if (f2fs_sb_has_casefold(sbi))
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return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
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sbi->s_encoding->charset,
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(sbi->s_encoding->version >> 16) & 0xff,
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(sbi->s_encoding->version >> 8) & 0xff,
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sbi->s_encoding->version & 0xff);
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#endif
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return snprintf(buf, PAGE_SIZE, "(none)");
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return sprintf(buf, "%llu\n",
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(unsigned long long)(free_segments(sbi)));
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}
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static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
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@ -102,10 +92,10 @@ static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
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struct super_block *sb = sbi->sb;
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if (!sb->s_bdev->bd_part)
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return snprintf(buf, PAGE_SIZE, "0\n");
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return sprintf(buf, "0\n");
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return snprintf(buf, PAGE_SIZE, "%llu\n",
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(unsigned long long)(sbi->kbytes_written +
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return sprintf(buf, "%llu\n",
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(unsigned long long)(sbi->kbytes_written +
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BD_PART_WRITTEN(sbi)));
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}
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@ -116,7 +106,7 @@ static ssize_t features_show(struct f2fs_attr *a,
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int len = 0;
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if (!sb->s_bdev->bd_part)
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return snprintf(buf, PAGE_SIZE, "0\n");
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return sprintf(buf, "0\n");
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if (f2fs_sb_has_encrypt(sbi))
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len += snprintf(buf, PAGE_SIZE - len, "%s",
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@ -166,9 +156,66 @@ static ssize_t features_show(struct f2fs_attr *a,
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static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
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return sprintf(buf, "%u\n", sbi->current_reserved_blocks);
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}
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static ssize_t unusable_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf)
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{
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block_t unusable;
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if (test_opt(sbi, DISABLE_CHECKPOINT))
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unusable = sbi->unusable_block_count;
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else
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unusable = f2fs_get_unusable_blocks(sbi);
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return sprintf(buf, "%llu\n", (unsigned long long)unusable);
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}
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static ssize_t encoding_show(struct f2fs_attr *a,
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struct f2fs_sb_info *sbi, char *buf)
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{
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#ifdef CONFIG_UNICODE
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if (f2fs_sb_has_casefold(sbi))
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return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
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sbi->s_encoding->charset,
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(sbi->s_encoding->version >> 16) & 0xff,
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(sbi->s_encoding->version >> 8) & 0xff,
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sbi->s_encoding->version & 0xff);
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#endif
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return sprintf(buf, "(none)");
|
||||
}
|
||||
|
||||
#ifdef CONFIG_F2FS_STAT_FS
|
||||
static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
|
||||
struct f2fs_sb_info *sbi, char *buf)
|
||||
{
|
||||
struct f2fs_stat_info *si = F2FS_STAT(sbi);
|
||||
|
||||
return sprintf(buf, "%llu\n",
|
||||
(unsigned long long)(si->tot_blks -
|
||||
(si->bg_data_blks + si->bg_node_blks)));
|
||||
}
|
||||
|
||||
static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
|
||||
struct f2fs_sb_info *sbi, char *buf)
|
||||
{
|
||||
struct f2fs_stat_info *si = F2FS_STAT(sbi);
|
||||
|
||||
return sprintf(buf, "%llu\n",
|
||||
(unsigned long long)(si->bg_data_blks + si->bg_node_blks));
|
||||
}
|
||||
|
||||
static ssize_t avg_vblocks_show(struct f2fs_attr *a,
|
||||
struct f2fs_sb_info *sbi, char *buf)
|
||||
{
|
||||
struct f2fs_stat_info *si = F2FS_STAT(sbi);
|
||||
|
||||
si->dirty_count = dirty_segments(sbi);
|
||||
f2fs_update_sit_info(sbi);
|
||||
return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
|
||||
}
|
||||
#endif
|
||||
|
||||
static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
|
||||
struct f2fs_sb_info *sbi, char *buf)
|
||||
{
|
||||
@ -202,7 +249,7 @@ static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
|
||||
|
||||
ui = (unsigned int *)(ptr + a->offset);
|
||||
|
||||
return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
|
||||
return sprintf(buf, "%u\n", *ui);
|
||||
}
|
||||
|
||||
static ssize_t __sbi_store(struct f2fs_attr *a,
|
||||
@ -413,7 +460,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a,
|
||||
case FEAT_SB_CHECKSUM:
|
||||
case FEAT_CASEFOLD:
|
||||
case FEAT_COMPRESSION:
|
||||
return snprintf(buf, PAGE_SIZE, "supported\n");
|
||||
return sprintf(buf, "supported\n");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
@ -442,6 +489,14 @@ static struct f2fs_attr f2fs_attr_##_name = { \
|
||||
.id = _id, \
|
||||
}
|
||||
|
||||
#define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \
|
||||
static struct f2fs_attr f2fs_attr_##_name = { \
|
||||
.attr = {.name = __stringify(_name), .mode = 0444 }, \
|
||||
.show = f2fs_sbi_show, \
|
||||
.struct_type = _struct_type, \
|
||||
.offset = offsetof(struct _struct_name, _elname), \
|
||||
}
|
||||
|
||||
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
|
||||
urgent_sleep_time);
|
||||
F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
|
||||
@ -483,11 +538,21 @@ F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
|
||||
F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
|
||||
#endif
|
||||
F2FS_GENERAL_RO_ATTR(dirty_segments);
|
||||
F2FS_GENERAL_RO_ATTR(free_segments);
|
||||
F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
|
||||
F2FS_GENERAL_RO_ATTR(features);
|
||||
F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
|
||||
F2FS_GENERAL_RO_ATTR(unusable);
|
||||
F2FS_GENERAL_RO_ATTR(encoding);
|
||||
#ifdef CONFIG_F2FS_STAT_FS
|
||||
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
|
||||
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
|
||||
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count);
|
||||
F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc);
|
||||
F2FS_GENERAL_RO_ATTR(moved_blocks_background);
|
||||
F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
|
||||
F2FS_GENERAL_RO_ATTR(avg_vblocks);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_FS_ENCRYPTION
|
||||
F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
|
||||
@ -549,12 +614,22 @@ static struct attribute *f2fs_attrs[] = {
|
||||
ATTR_LIST(inject_type),
|
||||
#endif
|
||||
ATTR_LIST(dirty_segments),
|
||||
ATTR_LIST(free_segments),
|
||||
ATTR_LIST(unusable),
|
||||
ATTR_LIST(lifetime_write_kbytes),
|
||||
ATTR_LIST(features),
|
||||
ATTR_LIST(reserved_blocks),
|
||||
ATTR_LIST(current_reserved_blocks),
|
||||
ATTR_LIST(encoding),
|
||||
#ifdef CONFIG_F2FS_STAT_FS
|
||||
ATTR_LIST(cp_foreground_calls),
|
||||
ATTR_LIST(cp_background_calls),
|
||||
ATTR_LIST(gc_foreground_calls),
|
||||
ATTR_LIST(gc_background_calls),
|
||||
ATTR_LIST(moved_blocks_foreground),
|
||||
ATTR_LIST(moved_blocks_background),
|
||||
ATTR_LIST(avg_vblocks),
|
||||
#endif
|
||||
NULL,
|
||||
};
|
||||
ATTRIBUTE_GROUPS(f2fs);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user