RW semphore dio_rwsem in struct f2fs_inode_info is introduced to avoid race between dio and data gc, but now, it is more wildly used to avoid foreground operation vs data gc. So rename it to i_gc_rwsem to improve its readability.
Signed-off-by: Chao Yu <[email protected]> --- fs/f2fs/data.c | 6 +++--- fs/f2fs/f2fs.h | 2 +- fs/f2fs/file.c | 28 ++++++++++++++-------------- fs/f2fs/gc.c | 14 +++++++------- fs/f2fs/super.c | 4 ++-- 5 files changed, 27 insertions(+), 27 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 5477fc09c3cd..f7365ce45450 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -2395,17 +2395,17 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter) if (rw == WRITE && whint_mode == WHINT_MODE_OFF) iocb->ki_hint = WRITE_LIFE_NOT_SET; - if (!down_read_trylock(&F2FS_I(inode)->dio_rwsem[rw])) { + if (!down_read_trylock(&F2FS_I(inode)->i_gc_rwsem[rw])) { if (iocb->ki_flags & IOCB_NOWAIT) { iocb->ki_hint = hint; err = -EAGAIN; goto out; } - down_read(&F2FS_I(inode)->dio_rwsem[rw]); + down_read(&F2FS_I(inode)->i_gc_rwsem[rw]); } err = blockdev_direct_IO(iocb, inode, iter, get_data_block_dio); - up_read(&F2FS_I(inode)->dio_rwsem[rw]); + up_read(&F2FS_I(inode)->i_gc_rwsem[rw]); if (rw == WRITE) { if (whint_mode == WHINT_MODE_OFF) diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index c2b92cb377c6..96556ce7f754 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -653,7 +653,7 @@ struct f2fs_inode_info { struct task_struct *inmem_task; /* store inmemory task */ struct mutex inmem_lock; /* lock for inmemory pages */ struct extent_tree *extent_tree; /* cached extent_tree entry */ - struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */ + struct rw_semaphore i_gc_rwsem[2];/* avoid racing between foreground op and gc */ struct rw_semaphore i_mmap_sem; struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */ diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 0cfa65c21d3f..e88d94846d50 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1191,7 +1191,7 @@ static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) pg_end = (offset + len) >> PAGE_SHIFT; /* avoid gc operation during block exchange */ - down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); down_write(&F2FS_I(inode)->i_mmap_sem); /* write out all dirty pages from offset */ @@ -1217,7 +1217,7 @@ static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) f2fs_i_size_write(inode, new_size); out_unlock: up_write(&F2FS_I(inode)->i_mmap_sem); - up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); return ret; } @@ -1393,7 +1393,7 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) f2fs_balance_fs(sbi, true); /* avoid gc operation during block exchange */ - down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); down_write(&F2FS_I(inode)->i_mmap_sem); ret = truncate_blocks(inode, i_size_read(inode), true); @@ -1434,7 +1434,7 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) f2fs_i_size_write(inode, new_size); out: up_write(&F2FS_I(inode)->i_mmap_sem); - up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); return ret; } @@ -1681,7 +1681,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) inode_lock(inode); - down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); if (f2fs_is_atomic_file(inode)) goto out; @@ -1709,7 +1709,7 @@ static int f2fs_ioc_start_atomic_write(struct file *filp) stat_inc_atomic_write(inode); stat_update_max_atomic_write(inode); out: - up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); inode_unlock(inode); mnt_drop_write_file(filp); return ret; @@ -1729,7 +1729,7 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp) inode_lock(inode); - down_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); if (f2fs_is_volatile_file(inode)) { ret = -EINVAL; @@ -1755,7 +1755,7 @@ static int f2fs_ioc_commit_atomic_write(struct file *filp) clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST); ret = -EINVAL; } - up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); inode_unlock(inode); mnt_drop_write_file(filp); return ret; @@ -2342,12 +2342,12 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, } inode_lock(src); - down_write(&F2FS_I(src)->dio_rwsem[WRITE]); + down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); if (src != dst) { ret = -EBUSY; if (!inode_trylock(dst)) goto out; - if (!down_write_trylock(&F2FS_I(dst)->dio_rwsem[WRITE])) { + if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE])) { inode_unlock(dst); goto out; } @@ -2409,11 +2409,11 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in, f2fs_unlock_op(sbi); out_unlock: if (src != dst) { - up_write(&F2FS_I(dst)->dio_rwsem[WRITE]); + up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]); inode_unlock(dst); } out: - up_write(&F2FS_I(src)->dio_rwsem[WRITE]); + up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]); inode_unlock(src); return ret; } @@ -2823,9 +2823,9 @@ int f2fs_precache_extents(struct inode *inode) while (map.m_lblk < end) { map.m_len = end - map.m_lblk; - down_write(&fi->dio_rwsem[WRITE]); + down_write(&fi->i_gc_rwsem[WRITE]); err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE); - up_write(&fi->dio_rwsem[WRITE]); + up_write(&fi->i_gc_rwsem[WRITE]); if (err) return err; diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index ec6cb7b417a1..a7bda034db06 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -890,7 +890,7 @@ static void gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, } if (!down_write_trylock( - &F2FS_I(inode)->dio_rwsem[WRITE])) { + &F2FS_I(inode)->i_gc_rwsem[WRITE])) { iput(inode); continue; } @@ -899,7 +899,7 @@ static void gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, data_page = get_read_data_page(inode, start_bidx + ofs_in_node, REQ_RAHEAD, true); - up_write(&F2FS_I(inode)->dio_rwsem[WRITE]); + up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]); if (IS_ERR(data_page)) { iput(inode); continue; @@ -917,11 +917,11 @@ static void gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, bool locked = false; if (S_ISREG(inode->i_mode)) { - if (!down_write_trylock(&fi->dio_rwsem[READ])) + if (!down_write_trylock(&fi->i_gc_rwsem[READ])) continue; if (!down_write_trylock( - &fi->dio_rwsem[WRITE])) { - up_write(&fi->dio_rwsem[READ]); + &fi->i_gc_rwsem[WRITE])) { + up_write(&fi->i_gc_rwsem[READ]); continue; } locked = true; @@ -940,8 +940,8 @@ static void gc_data_segment(struct f2fs_sb_info *sbi, struct f2fs_summary *sum, segno, off); if (locked) { - up_write(&fi->dio_rwsem[WRITE]); - up_write(&fi->dio_rwsem[READ]); + up_write(&fi->i_gc_rwsem[WRITE]); + up_write(&fi->i_gc_rwsem[READ]); } stat_inc_data_blk_count(sbi, 1, gc_type); diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 199f29dce86d..7e6fab673073 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -833,8 +833,8 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) INIT_LIST_HEAD(&fi->inmem_ilist); INIT_LIST_HEAD(&fi->inmem_pages); mutex_init(&fi->inmem_lock); - init_rwsem(&fi->dio_rwsem[READ]); - init_rwsem(&fi->dio_rwsem[WRITE]); + init_rwsem(&fi->i_gc_rwsem[READ]); + init_rwsem(&fi->i_gc_rwsem[WRITE]); init_rwsem(&fi->i_mmap_sem); init_rwsem(&fi->i_xattr_sem); -- 2.15.0.55.gc2ece9dc4de6 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
