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f2fs: speed up gc_urgent mode with SSR 

This patch activates SSR in gc_urgent mode.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2017-09-09 11:11:04 -07:00
parent 1eb1ef4a8e
commit b3a97a2a9a
3 changed files with 16 additions and 13 deletions
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1
fs/f2fs/f2fs.h
View File

@ -2511,6 +2511,7 @@ void destroy_node_manager_caches(void);
/* /*
* segment.c * segment.c
*/ */
bool need_SSR(struct f2fs_sb_info *sbi);
void register_inmem_page(struct inode *inode, struct page *page); void register_inmem_page(struct inode *inode, struct page *page);
void drop_inmem_pages(struct inode *inode); void drop_inmem_pages(struct inode *inode);
void drop_inmem_page(struct inode *inode, struct page *page); void drop_inmem_page(struct inode *inode, struct page *page);

15
fs/f2fs/segment.c
View File

@ -169,6 +169,21 @@ static unsigned long __find_rev_next_zero_bit(const unsigned long *addr,
return result - size + __reverse_ffz(tmp); return result - size + __reverse_ffz(tmp);
} }
bool need_SSR(struct f2fs_sb_info *sbi)
{
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
if (test_opt(sbi, LFS))
return false;
if (sbi->gc_thread && sbi->gc_thread->gc_urgent)
return true;
return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
2 * reserved_sections(sbi));
}
void register_inmem_page(struct inode *inode, struct page *page) void register_inmem_page(struct inode *inode, struct page *page)
{ {
struct f2fs_inode_info *fi = F2FS_I(inode); struct f2fs_inode_info *fi = F2FS_I(inode);

13
fs/f2fs/segment.h
View File

@ -497,19 +497,6 @@ static inline int reserved_sections(struct f2fs_sb_info *sbi)
return GET_SEC_FROM_SEG(sbi, (unsigned int)reserved_segments(sbi)); return GET_SEC_FROM_SEG(sbi, (unsigned int)reserved_segments(sbi));
} }
static inline bool need_SSR(struct f2fs_sb_info *sbi)
{
int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES);
int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS);
int imeta_secs = get_blocktype_secs(sbi, F2FS_DIRTY_IMETA);
if (test_opt(sbi, LFS))
return false;
return free_sections(sbi) <= (node_secs + 2 * dent_secs + imeta_secs +
2 * reserved_sections(sbi));
}
static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi,
int freed, int needed) int freed, int needed)
{ {