f2fs: apply write hints to select the type of segment for direct write

When blocks are allocated for direct write, select the type of
segment using the kiocb hint. But if an inode has FI_NO_ALLOC,
use the inode hint.

Signed-off-by: Hyunchul Lee <cheol.lee@lge.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index ff86ecb7d02198bc273f6580a6fa7376be560afd..7f8bf9629a24c8e0bb892cfa88809642675b8ebf 100644 (file)
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -783,7 +783,7 @@ got_it:
        return page;
 }
 
-static int __allocate_data_block(struct dnode_of_data *dn)
+static int __allocate_data_block(struct dnode_of_data *dn, int seg_type)
 {
        struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
        struct f2fs_summary sum;
@@ -808,7 +808,7 @@ alloc:
        set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version);
 
        allocate_data_block(sbi, NULL, dn->data_blkaddr, &dn->data_blkaddr,
-                                       &sum, CURSEG_WARM_DATA, NULL, false);
+                                       &sum, seg_type, NULL, false);
        set_data_blkaddr(dn);
 
        /* update i_size */
@@ -851,12 +851,15 @@ int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from)
                map.m_len = 0;
 
        map.m_next_pgofs = NULL;
+       map.m_seg_type = NO_CHECK_TYPE;
 
-       if (iocb->ki_flags & IOCB_DIRECT)
+       if (iocb->ki_flags & IOCB_DIRECT) {
+               map.m_seg_type = rw_hint_to_seg_type(iocb->ki_hint);
                return f2fs_map_blocks(inode, &map, 1,
                        __force_buffered_io(inode, WRITE) ?
                                F2FS_GET_BLOCK_PRE_AIO :
                                F2FS_GET_BLOCK_PRE_DIO);
+       }
        if (iocb->ki_pos + iov_iter_count(from) > MAX_INLINE_DATA(inode)) {
                err = f2fs_convert_inline_inode(inode);
                if (err)
@@ -966,7 +969,8 @@ next_block:
                                        last_ofs_in_node = dn.ofs_in_node;
                                }
                        } else {
-                               err = __allocate_data_block(&dn);
+                               err = __allocate_data_block(&dn,
+                                                       map->m_seg_type);
                                if (!err)
                                        set_inode_flag(inode, FI_APPEND_WRITE);
                        }
@@ -1059,7 +1063,7 @@ out:
 
 static int __get_data_block(struct inode *inode, sector_t iblock,
                        struct buffer_head *bh, int create, int flag,
-                       pgoff_t *next_pgofs)
+                       pgoff_t *next_pgofs, int seg_type)
 {
        struct f2fs_map_blocks map;
        int err;
@@ -1067,6 +1071,7 @@ static int __get_data_block(struct inode *inode, sector_t iblock,
        map.m_lblk = iblock;
        map.m_len = bh->b_size >> inode->i_blkbits;
        map.m_next_pgofs = next_pgofs;
+       map.m_seg_type = seg_type;
 
        err = f2fs_map_blocks(inode, &map, create, flag);
        if (!err) {
@@ -1082,14 +1087,17 @@ static int get_data_block(struct inode *inode, sector_t iblock,
                        pgoff_t *next_pgofs)
 {
        return __get_data_block(inode, iblock, bh_result, create,
-                                                       flag, next_pgofs);
+                                                       flag, next_pgofs,
+                                                       NO_CHECK_TYPE);
 }
 
 static int get_data_block_dio(struct inode *inode, sector_t iblock,
                        struct buffer_head *bh_result, int create)
 {
        return __get_data_block(inode, iblock, bh_result, create,
-                                               F2FS_GET_BLOCK_DEFAULT, NULL);
+                                               F2FS_GET_BLOCK_DEFAULT, NULL,
+                                               rw_hint_to_seg_type(
+                                                       inode->i_write_hint));
 }
 
 static int get_data_block_bmap(struct inode *inode, sector_t iblock,
@@ -1100,7 +1108,8 @@ static int get_data_block_bmap(struct inode *inode, sector_t iblock,
                return -EFBIG;
 
        return __get_data_block(inode, iblock, bh_result, create,
-                                               F2FS_GET_BLOCK_BMAP, NULL);
+                                               F2FS_GET_BLOCK_BMAP, NULL,
+                                               NO_CHECK_TYPE);
 }
 
 static inline sector_t logical_to_blk(struct inode *inode, loff_t offset)
@@ -1219,6 +1228,7 @@ static int f2fs_mpage_readpages(struct address_space *mapping,
        map.m_len = 0;
        map.m_flags = 0;
        map.m_next_pgofs = NULL;
+       map.m_seg_type = NO_CHECK_TYPE;
 
        for (; nr_pages; nr_pages--) {
                if (pages) {

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 4acdca4369d5376a6de8e5125283e1d06cb02373..5c421738d818a5fdec8e3c8bda98c6cef49cada8 100644 (file)
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -542,6 +542,7 @@ struct f2fs_map_blocks {
        unsigned int m_len;
        unsigned int m_flags;
        pgoff_t *m_next_pgofs;          /* point next possible non-hole pgofs */
+       int m_seg_type;
 };
 
 /* for flag in get_data_block */
@@ -2674,6 +2675,7 @@ int build_segment_manager(struct f2fs_sb_info *sbi);
 void destroy_segment_manager(struct f2fs_sb_info *sbi);
 int __init create_segment_manager_caches(void);
 void destroy_segment_manager_caches(void);
+int rw_hint_to_seg_type(enum rw_hint hint);
 
 /*
  * checkpoint.c

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index ec7f2c5043f5b45f46fa2aeb2a7a28ef1d1c4255..e55180f71e18ba34a839952d155c57c5a547f6f4 100644 (file)
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1417,7 +1417,8 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
                                        loff_t len, int mode)
 {
        struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
-       struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
+       struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
+                                       .m_seg_type = NO_CHECK_TYPE };
        pgoff_t pg_end;
        loff_t new_size = i_size_read(inode);
        loff_t off_end;
@@ -2065,7 +2066,8 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
                                        struct f2fs_defragment *range)
 {
        struct inode *inode = file_inode(filp);
-       struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
+       struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
+                                       .m_seg_type = NO_CHECK_TYPE };
        struct extent_info ei = {0,0,0};
        pgoff_t pg_start, pg_end;
        unsigned int blk_per_seg = sbi->blocks_per_seg;