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f2fs: count the number of inmemory pages 

This patch adds counting # of inmemory pages in the page cache.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2014-12-05 17:18:15 -08:00
parent 126622343a
commit 8dcf2ff721
3 changed files with 8 additions and 1 deletions
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3
fs/f2fs/debug.c
View File

@ -39,6 +39,7 @@ static void update_general_status(struct f2fs_sb_info *sbi)
si->ndirty_dent = get_pages(sbi, F2FS_DIRTY_DENTS);
si->ndirty_dirs = sbi->n_dirty_dirs;
si->ndirty_meta = get_pages(sbi, F2FS_DIRTY_META);
si->inmem_pages = get_pages(sbi, F2FS_INMEM_PAGES);
si->total_count = (int)sbi->user_block_count / sbi->blocks_per_seg;
si->rsvd_segs = reserved_segments(sbi);
si->overp_segs = overprovision_segments(sbi);
@ -249,6 +250,8 @@ static int stat_show(struct seq_file *s, void *v)
seq_printf(s, "\nExtent Hit Ratio: %d / %d\n",
si->hit_ext, si->total_ext);
seq_puts(s, "\nBalancing F2FS Async:\n");
seq_printf(s, " - inmem: %4d\n",
si->inmem_pages);
seq_printf(s, " - nodes: %4d in %4d\n",
si->ndirty_node, si->node_pages);
seq_printf(s, " - dents: %4d in dirs:%4d\n",

3
fs/f2fs/f2fs.h
View File

@ -462,6 +462,7 @@ enum count_type {
F2FS_DIRTY_DENTS,
F2FS_DIRTY_NODES,
F2FS_DIRTY_META,
F2FS_INMEM_PAGES,
NR_COUNT_TYPE,
};
@ -1498,7 +1499,7 @@ struct f2fs_stat_info {
int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta;
int nats, sits, fnids;
int total_count, utilization;
int bg_gc, inline_inode, inline_dir;
int bg_gc, inline_inode, inline_dir, inmem_pages;
unsigned int valid_count, valid_node_count, valid_inode_count;
unsigned int bimodal, avg_vblocks;
int util_free, util_valid, util_invalid;

3
fs/f2fs/segment.c
View File

@ -201,6 +201,7 @@ retry:
}
get_page(page);
list_add_tail(&new->list, &fi->inmem_pages);
inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
mutex_unlock(&fi->inmem_lock);
}
@ -216,6 +217,7 @@ void invalidate_inmem_page(struct inode *inode, struct page *page)
f2fs_put_page(cur->page, 0);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
}
mutex_unlock(&fi->inmem_lock);
}
@ -257,6 +259,7 @@ void commit_inmem_pages(struct inode *inode, bool abort)
f2fs_put_page(cur->page, 1);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
}
if (submit_bio)
f2fs_submit_merged_bio(sbi, DATA, WRITE);