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f2fs: f2fs_do_map_lock

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Split f2fs_do_map_lock into a lock and unlock helper to make the code
using it easier to read.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Christoph Hellwig 2022-11-28 10:15:16 +01:00 committed by Jaegeuk Kim
parent cf342d3bed
commit 2f51ade952
1 changed files with 23 additions and 22 deletions
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45
fs/f2fs/data.c
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@ -1451,19 +1451,20 @@ alloc:
return 0;
}
static void f2fs_do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock)
static void f2fs_map_lock(struct f2fs_sb_info *sbi, int flag)
{
if (flag == F2FS_GET_BLOCK_PRE_AIO) {
if (lock)
f2fs_down_read(&sbi->node_change);
else
f2fs_up_read(&sbi->node_change);
} else {
if (lock)
f2fs_lock_op(sbi);
else
f2fs_unlock_op(sbi);
}
if (flag == F2FS_GET_BLOCK_PRE_AIO)
f2fs_down_read(&sbi->node_change);
else
f2fs_lock_op(sbi);
}
static void f2fs_map_unlock(struct f2fs_sb_info *sbi, int flag)
{
if (flag == F2FS_GET_BLOCK_PRE_AIO)
f2fs_up_read(&sbi->node_change);
else
f2fs_unlock_op(sbi);
}
int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index)
@ -1471,9 +1472,9 @@ int f2fs_get_block_locked(struct dnode_of_data *dn, pgoff_t index)
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
int err;
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
err = f2fs_get_block(dn, index);
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
f2fs_map_unlock(sbi, F2FS_GET_BLOCK_PRE_AIO);
return err;
}
@ -1548,7 +1549,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
next_dnode:
if (map->m_may_create)
f2fs_do_map_lock(sbi, flag, true);
f2fs_map_lock(sbi, flag);
/* When reading holes, we need its node page */
set_new_dnode(&dn, inode, NULL, NULL, 0);
@ -1732,7 +1733,7 @@ skip:
f2fs_put_dnode(&dn);
if (map->m_may_create) {
f2fs_do_map_lock(sbi, flag, false);
f2fs_map_unlock(sbi, flag);
f2fs_balance_fs(sbi, dn.node_changed);
}
goto next_dnode;
@ -1778,7 +1779,7 @@ sync_out:
f2fs_put_dnode(&dn);
unlock_out:
if (map->m_may_create) {
f2fs_do_map_lock(sbi, flag, false);
f2fs_map_unlock(sbi, flag);
f2fs_balance_fs(sbi, dn.node_changed);
}
out:
@ -3350,7 +3351,7 @@ static int prepare_write_begin(struct f2fs_sb_info *sbi,
if (f2fs_has_inline_data(inode) ||
(pos & PAGE_MASK) >= i_size_read(inode)) {
f2fs_do_map_lock(sbi, flag, true);
f2fs_map_lock(sbi, flag);
locked = true;
}
@ -3385,7 +3386,7 @@ restart:
err = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
if (err || dn.data_blkaddr == NULL_ADDR) {
f2fs_put_dnode(&dn);
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
WARN_ON(flag != F2FS_GET_BLOCK_PRE_AIO);
locked = true;
goto restart;
@ -3399,7 +3400,7 @@ out:
f2fs_put_dnode(&dn);
unlock_out:
if (locked)
f2fs_do_map_lock(sbi, flag, false);
f2fs_map_unlock(sbi, flag);
return err;
}
@ -3438,7 +3439,7 @@ static int __reserve_data_block(struct inode *inode, pgoff_t index,
struct page *ipage;
int err = 0;
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
f2fs_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO);
ipage = f2fs_get_node_page(sbi, inode->i_ino);
if (IS_ERR(ipage)) {
@ -3454,7 +3455,7 @@ static int __reserve_data_block(struct inode *inode, pgoff_t index,
f2fs_put_dnode(&dn);
unlock_out:
f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
f2fs_map_unlock(sbi, F2FS_GET_BLOCK_PRE_AIO);
return err;
}