summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorJaegeuk Kim <jaegeuk@kernel.org>2014-11-06 15:24:46 -0800
committerJaegeuk Kim <jaegeuk@kernel.org>2014-11-06 15:24:46 -0800
commite5e7ea3c86e56b725e4076e8dc583378abad7697 (patch)
treea45ac759f1fc7391327ebc1dc56e8db00f9a3cc8
parent8c402946f0743af91d22eca31d98b058b3371054 (diff)
downloadlinux-e5e7ea3c86e56b725e4076e8dc583378abad7697.tar.gz
linux-e5e7ea3c86e56b725e4076e8dc583378abad7697.tar.bz2
linux-e5e7ea3c86e56b725e4076e8dc583378abad7697.zip
f2fs: control the memory footprint used by ino entries
This patch adds to control the memory footprint used by ino entries. This will conduct best effort, not strictly. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
-rw-r--r--fs/f2fs/node.c28
-rw-r--r--fs/f2fs/node.h3
-rw-r--r--fs/f2fs/segment.c3
3 files changed, 26 insertions, 8 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 44b8afef43d9..4ea2c4728156 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -31,22 +31,38 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type)
{
struct f2fs_nm_info *nm_i = NM_I(sbi);
struct sysinfo val;
+ unsigned long avail_ram;
unsigned long mem_size = 0;
bool res = false;
si_meminfo(&val);
- /* give 25%, 25%, 50% memory for each components respectively */
+
+ /* only uses low memory */
+ avail_ram = val.totalram - val.totalhigh;
+
+ /* give 25%, 25%, 50%, 50% memory for each components respectively */
if (type == FREE_NIDS) {
- mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >> 12;
- res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 2);
+ mem_size = (nm_i->fcnt * sizeof(struct free_nid)) >>
+ PAGE_CACHE_SHIFT;
+ res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
} else if (type == NAT_ENTRIES) {
- mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >> 12;
- res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 2);
+ mem_size = (nm_i->nat_cnt * sizeof(struct nat_entry)) >>
+ PAGE_CACHE_SHIFT;
+ res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 2);
} else if (type == DIRTY_DENTS) {
if (sbi->sb->s_bdi->dirty_exceeded)
return false;
mem_size = get_pages(sbi, F2FS_DIRTY_DENTS);
- res = mem_size < ((val.totalram * nm_i->ram_thresh / 100) >> 1);
+ res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
+ } else if (type == INO_ENTRIES) {
+ int i;
+
+ if (sbi->sb->s_bdi->dirty_exceeded)
+ return false;
+ for (i = 0; i <= UPDATE_INO; i++)
+ mem_size += (sbi->ino_num[i] * sizeof(struct ino_entry))
+ >> PAGE_CACHE_SHIFT;
+ res = mem_size < ((avail_ram * nm_i->ram_thresh / 100) >> 1);
}
return res;
}
diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h
index acb71e507a7a..d10b6448a671 100644
--- a/fs/f2fs/node.h
+++ b/fs/f2fs/node.h
@@ -106,7 +106,8 @@ static inline void raw_nat_from_node_info(struct f2fs_nat_entry *raw_ne,
enum mem_type {
FREE_NIDS, /* indicates the free nid list */
NAT_ENTRIES, /* indicates the cached nat entry */
- DIRTY_DENTS /* indicates dirty dentry pages */
+ DIRTY_DENTS, /* indicates dirty dentry pages */
+ INO_ENTRIES, /* indicates inode entries */
};
struct nat_entry_set {
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 16721b5dffa4..e094675497d8 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -276,7 +276,8 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
{
/* check the # of cached NAT entries and prefree segments */
if (try_to_free_nats(sbi, NAT_ENTRY_PER_BLOCK) ||
- excess_prefree_segs(sbi))
+ excess_prefree_segs(sbi) ||
+ available_free_memory(sbi, INO_ENTRIES))
f2fs_sync_fs(sbi->sb, true);
}