From: Daeho Jeong <daehoje...@google.com> Support swap file pinning for zoned devices
Signed-off-by: Daeho Jeong <daehoje...@google.com> Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org> --- fs/f2fs/data.c | 54 ++++++++++++++++++++++++++++++++------------------ 1 file changed, 35 insertions(+), 19 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 05158f89ef32..5d8ee6e73dbe 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -3905,28 +3905,40 @@ static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, unsigned int blkcnt) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_map_blocks map = { .m_next_pgofs = NULL, + .m_next_extent = NULL, .m_seg_type = CURSEG_COLD_DATA_PINNED, + .m_may_create = true }; unsigned int blkofs; unsigned int blk_per_sec = BLKS_PER_SEC(sbi); unsigned int secidx = start_blk / blk_per_sec; - unsigned int end_sec = secidx + blkcnt / blk_per_sec; + unsigned int end_sec; int ret = 0; + if (!blkcnt) + return 0; + end_sec = secidx + (blkcnt - 1) / blk_per_sec; + f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); filemap_invalidate_lock(inode->i_mapping); set_inode_flag(inode, FI_ALIGNED_WRITE); set_inode_flag(inode, FI_OPU_WRITE); - for (; secidx < end_sec; secidx++) { + for (; secidx <= end_sec; secidx++) { + unsigned int blkofs_end = secidx == end_sec ? + (blkcnt - 1) % blk_per_sec : blk_per_sec - 1; + f2fs_down_write(&sbi->pin_sem); - f2fs_lock_op(sbi); - f2fs_allocate_new_section(sbi, CURSEG_COLD_DATA_PINNED, false); - f2fs_unlock_op(sbi); + ret = f2fs_allocate_pinning_section(sbi); + if (ret) { + f2fs_up_write(&sbi->pin_sem); + break; + } set_inode_flag(inode, FI_SKIP_WRITES); - for (blkofs = 0; blkofs < blk_per_sec; blkofs++) { + for (blkofs = 0; blkofs <= blkofs_end; blkofs++) { struct page *page; unsigned int blkidx = secidx * blk_per_sec + blkofs; @@ -3944,6 +3956,12 @@ static int f2fs_migrate_blocks(struct inode *inode, block_t start_blk, clear_inode_flag(inode, FI_SKIP_WRITES); ret = filemap_fdatawrite(inode->i_mapping); + if (!ret && blkofs != blk_per_sec) { + map.m_lblk = secidx * blk_per_sec + blkofs; + map.m_len = blk_per_sec - blkofs; + ret = f2fs_map_blocks(inode, &map, + F2FS_GET_BLOCK_PRE_DIO); + } f2fs_up_write(&sbi->pin_sem); @@ -4015,19 +4033,17 @@ static int check_swap_activate(struct swap_info_struct *sis, nr_pblocks = map.m_len; if ((pblock - SM_I(sbi)->main_blkaddr) & sec_blks_mask || - nr_pblocks & sec_blks_mask) { + nr_pblocks & sec_blks_mask || + !f2fs_valid_pinned_area(sbi, pblock)) { not_aligned++; nr_pblocks = roundup(nr_pblocks, blks_per_sec); if (cur_lblock + nr_pblocks > sis->max) nr_pblocks -= blks_per_sec; - if (!nr_pblocks) { - /* this extent is last one */ - nr_pblocks = map.m_len; - f2fs_warn(sbi, "Swapfile: last extent is not aligned to section"); - goto next; - } + /* this extent is last one */ + if (!nr_pblocks) + nr_pblocks = last_lblock - cur_lblock; ret = f2fs_migrate_blocks(inode, cur_lblock, nr_pblocks); @@ -4035,7 +4051,7 @@ static int check_swap_activate(struct swap_info_struct *sis, goto out; goto retry; } -next: + if (cur_lblock + nr_pblocks >= sis->max) nr_pblocks = sis->max - cur_lblock; @@ -4073,17 +4089,17 @@ static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, sector_t *span) { struct inode *inode = file_inode(file); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); int ret; if (!S_ISREG(inode->i_mode)) return -EINVAL; - if (f2fs_readonly(F2FS_I_SB(inode)->sb)) + if (f2fs_readonly(sbi->sb)) return -EROFS; - if (f2fs_lfs_mode(F2FS_I_SB(inode))) { - f2fs_err(F2FS_I_SB(inode), - "Swapfile not supported in LFS mode"); + if (f2fs_lfs_mode(sbi) && !f2fs_sb_has_blkzoned(sbi)) { + f2fs_err(sbi, "Swapfile not supported in LFS mode"); return -EINVAL; } @@ -4102,7 +4118,7 @@ static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file, stat_inc_swapfile_inode(inode); set_inode_flag(inode, FI_PIN_FILE); - f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); + f2fs_update_time(sbi, REQ_TIME); return ret; } -- 2.43.0.594.gd9cf4e227d-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel