6.1-stable review patch. If anyone has any objections, please let me know.
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From: Jaegeuk Kim jaegeuk@kernel.org
[ Upstream commit 078cad8212ce4f4ebbafcc0936475b8215e1ca2a ]
Let's drop the inode from the donation list when there is no other open file.
Reviewed-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Stable-dep-of: 10b591e7fb7c ("f2fs: fix to avoid updating compression context during writeback") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/f2fs/f2fs.h | 2 ++ fs/f2fs/file.c | 8 +++++++- fs/f2fs/inode.c | 2 +- fs/f2fs/super.c | 1 + 4 files changed, 11 insertions(+), 2 deletions(-)
--- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -824,6 +824,7 @@ struct f2fs_inode_info { /* linked in global inode list for cache donation */ struct list_head gdonate_list; pgoff_t donate_start, donate_end; /* inclusive */ + atomic_t open_count; /* # of open files */
struct task_struct *atomic_write_task; /* store atomic write task */ struct extent_tree *extent_tree[NR_EXTENT_CACHES]; @@ -3473,6 +3474,7 @@ int f2fs_try_to_free_nats(struct f2fs_sb void f2fs_update_inode(struct inode *inode, struct page *node_page); void f2fs_update_inode_page(struct inode *inode); int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc); +void f2fs_remove_donate_inode(struct inode *inode); void f2fs_evict_inode(struct inode *inode); void f2fs_handle_failed_inode(struct inode *inode);
--- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -595,7 +595,10 @@ static int f2fs_file_open(struct inode * if (err) return err;
- return finish_preallocate_blocks(inode); + err = finish_preallocate_blocks(inode); + if (!err) + atomic_inc(&F2FS_I(inode)->open_count); + return err; }
void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count) @@ -1923,6 +1926,9 @@ out:
static int f2fs_release_file(struct inode *inode, struct file *filp) { + if (atomic_dec_and_test(&F2FS_I(inode)->open_count)) + f2fs_remove_donate_inode(inode); + /* * f2fs_release_file is called at every close calls. So we should * not drop any inmemory pages by close called by other process. --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -743,7 +743,7 @@ int f2fs_write_inode(struct inode *inode return 0; }
-static void f2fs_remove_donate_inode(struct inode *inode) +void f2fs_remove_donate_inode(struct inode *inode) { struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
--- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1425,6 +1425,7 @@ static struct inode *f2fs_alloc_inode(st /* Initialize f2fs-specific inode info */ atomic_set(&fi->dirty_pages, 0); atomic_set(&fi->i_compr_blocks, 0); + atomic_set(&fi->open_count, 0); init_f2fs_rwsem(&fi->i_sem); spin_lock_init(&fi->i_size_lock); INIT_LIST_HEAD(&fi->dirty_list);