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-rw-r--r--fs/nilfs2/dir.c24
-rw-r--r--fs/nilfs2/inode.c10
-rw-r--r--fs/nilfs2/mdt.c6
-rw-r--r--fs/nilfs2/namei.c37
-rw-r--r--fs/nilfs2/nilfs.h10
-rw-r--r--fs/nilfs2/page.c55
-rw-r--r--fs/nilfs2/page.h4
-rw-r--r--fs/nilfs2/segment.c4
8 files changed, 84 insertions, 66 deletions
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index cd363e2fc071..3d7e692f3e7f 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -64,12 +64,6 @@ static inline unsigned int nilfs_chunk_size(struct inode *inode)
return inode->i_sb->s_blocksize;
}
-static inline void nilfs_put_page(struct page *page)
-{
- kunmap(page);
- put_page(page);
-}
-
/*
* Return the offset into page `page_nr' of the last valid
* byte in that page, plus one.
@@ -450,8 +444,7 @@ int nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr, ino_t *ino)
return 0;
}
-/* Releases the page */
-void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
+int nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
struct page *page, struct inode *inode)
{
unsigned int from = (char *)de - (char *)page_address(page);
@@ -461,12 +454,15 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
lock_page(page);
err = nilfs_prepare_chunk(page, from, to);
- BUG_ON(err);
+ if (unlikely(err)) {
+ unlock_page(page);
+ return err;
+ }
de->inode = cpu_to_le64(inode->i_ino);
nilfs_set_de_type(de, inode);
nilfs_commit_chunk(page, mapping, from, to);
- nilfs_put_page(page);
dir->i_mtime = dir->i_ctime = current_time(dir);
+ return 0;
}
/*
@@ -569,7 +565,7 @@ out_unlock:
/*
* nilfs_delete_entry deletes a directory entry by merging it with the
- * previous entry. Page is up-to-date. Releases the page.
+ * previous entry. Page is up-to-date.
*/
int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page)
{
@@ -598,14 +594,16 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct page *page)
from = (char *)pde - (char *)page_address(page);
lock_page(page);
err = nilfs_prepare_chunk(page, from, to);
- BUG_ON(err);
+ if (unlikely(err)) {
+ unlock_page(page);
+ goto out;
+ }
if (pde)
pde->rec_len = nilfs_rec_len_to_disk(to - from);
dir->inode = 0;
nilfs_commit_chunk(page, mapping, from, to);
inode->i_ctime = inode->i_mtime = current_time(inode);
out:
- nilfs_put_page(page);
return err;
}
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 97c1beb00637..424949d86a41 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -162,7 +162,7 @@ static int nilfs_writepages(struct address_space *mapping,
int err = 0;
if (sb_rdonly(inode->i_sb)) {
- nilfs_clear_dirty_pages(mapping, false);
+ nilfs_clear_dirty_pages(mapping);
return -EROFS;
}
@@ -185,7 +185,7 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
* have dirty pages that try to be flushed in background.
* So, here we simply discard this dirty page.
*/
- nilfs_clear_dirty_page(page, false);
+ nilfs_clear_dirty_page(page);
unlock_page(page);
return -EROFS;
}
@@ -1265,7 +1265,7 @@ int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
if (size) {
if (phys && blkphy << blkbits == phys + size) {
/* The current extent goes on */
- size += n << blkbits;
+ size += (u64)n << blkbits;
} else {
/* Terminate the current extent */
ret = fiemap_fill_next_extent(
@@ -1278,14 +1278,14 @@ int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
flags = FIEMAP_EXTENT_MERGED;
logical = blkoff << blkbits;
phys = blkphy << blkbits;
- size = n << blkbits;
+ size = (u64)n << blkbits;
}
} else {
/* Start a new extent */
flags = FIEMAP_EXTENT_MERGED;
logical = blkoff << blkbits;
phys = blkphy << blkbits;
- size = n << blkbits;
+ size = (u64)n << blkbits;
}
blkoff += n;
}
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index bd3e0f9144ff..8156d2b5ec6c 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -410,7 +410,7 @@ nilfs_mdt_write_page(struct page *page, struct writeback_control *wbc)
* have dirty pages that try to be flushed in background.
* So, here we simply discard this dirty page.
*/
- nilfs_clear_dirty_page(page, false);
+ nilfs_clear_dirty_page(page);
unlock_page(page);
return -EROFS;
}
@@ -632,10 +632,10 @@ void nilfs_mdt_restore_from_shadow_map(struct inode *inode)
if (mi->mi_palloc_cache)
nilfs_palloc_clear_cache(inode);
- nilfs_clear_dirty_pages(inode->i_mapping, true);
+ nilfs_clear_dirty_pages(inode->i_mapping);
nilfs_copy_back_pages(inode->i_mapping, shadow->inode->i_mapping);
- nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping, true);
+ nilfs_clear_dirty_pages(ii->i_assoc_inode->i_mapping);
nilfs_copy_back_pages(ii->i_assoc_inode->i_mapping,
NILFS_I(shadow->inode)->i_assoc_inode->i_mapping);
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 4f778bc24ef5..a81c24630e26 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -297,6 +297,7 @@ static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry)
set_nlink(inode, 1);
}
err = nilfs_delete_entry(de, page);
+ nilfs_put_page(page);
if (err)
goto out;
@@ -405,7 +406,10 @@ static int nilfs_rename(struct user_namespace *mnt_userns,
err = PTR_ERR(new_de);
goto out_dir;
}
- nilfs_set_link(new_dir, new_de, new_page, old_inode);
+ err = nilfs_set_link(new_dir, new_de, new_page, old_inode);
+ nilfs_put_page(new_page);
+ if (unlikely(err))
+ goto out_dir;
nilfs_mark_inode_dirty(new_dir);
new_inode->i_ctime = current_time(new_inode);
if (dir_de)
@@ -428,28 +432,27 @@ static int nilfs_rename(struct user_namespace *mnt_userns,
*/
old_inode->i_ctime = current_time(old_inode);
- nilfs_delete_entry(old_de, old_page);
-
- if (dir_de) {
- nilfs_set_link(old_inode, dir_de, dir_page, new_dir);
- drop_nlink(old_dir);
+ err = nilfs_delete_entry(old_de, old_page);
+ if (likely(!err)) {
+ if (dir_de) {
+ err = nilfs_set_link(old_inode, dir_de, dir_page,
+ new_dir);
+ drop_nlink(old_dir);
+ }
+ nilfs_mark_inode_dirty(old_dir);
}
- nilfs_mark_inode_dirty(old_dir);
nilfs_mark_inode_dirty(old_inode);
- err = nilfs_transaction_commit(old_dir->i_sb);
- return err;
-
out_dir:
- if (dir_de) {
- kunmap(dir_page);
- put_page(dir_page);
- }
+ if (dir_de)
+ nilfs_put_page(dir_page);
out_old:
- kunmap(old_page);
- put_page(old_page);
+ nilfs_put_page(old_page);
out:
- nilfs_transaction_abort(old_dir->i_sb);
+ if (likely(!err))
+ err = nilfs_transaction_commit(old_dir->i_sb);
+ else
+ nilfs_transaction_abort(old_dir->i_sb);
return err;
}
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 935fb5234c24..14ae1e3df83f 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -240,8 +240,14 @@ nilfs_find_entry(struct inode *, const struct qstr *, struct page **);
extern int nilfs_delete_entry(struct nilfs_dir_entry *, struct page *);
extern int nilfs_empty_dir(struct inode *);
extern struct nilfs_dir_entry *nilfs_dotdot(struct inode *, struct page **);
-extern void nilfs_set_link(struct inode *, struct nilfs_dir_entry *,
- struct page *, struct inode *);
+int nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
+ struct page *page, struct inode *inode);
+
+static inline void nilfs_put_page(struct page *page)
+{
+ kunmap(page);
+ put_page(page);
+}
/* file.c */
extern int nilfs_sync_file(struct file *, loff_t, loff_t, int);
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index d2d6d5c761e8..ce5947cf4bd5 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -354,9 +354,8 @@ repeat:
/**
* nilfs_clear_dirty_pages - discard dirty pages in address space
* @mapping: address space with dirty pages for discarding
- * @silent: suppress [true] or print [false] warning messages
*/
-void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
+void nilfs_clear_dirty_pages(struct address_space *mapping)
{
struct pagevec pvec;
unsigned int i;
@@ -377,7 +376,7 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
* was acquired. Skip processing in that case.
*/
if (likely(page->mapping == mapping))
- nilfs_clear_dirty_page(page, silent);
+ nilfs_clear_dirty_page(page);
unlock_page(page);
}
@@ -389,44 +388,54 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, bool silent)
/**
* nilfs_clear_dirty_page - discard dirty page
* @page: dirty page that will be discarded
- * @silent: suppress [true] or print [false] warning messages
+ *
+ * nilfs_clear_dirty_page() clears working states including dirty state for
+ * the page and its buffers. If the page has buffers, clear only if it is
+ * confirmed that none of the buffer heads are busy (none have valid
+ * references and none are locked).
*/
-void nilfs_clear_dirty_page(struct page *page, bool silent)
+void nilfs_clear_dirty_page(struct page *page)
{
- struct inode *inode = page->mapping->host;
- struct super_block *sb = inode->i_sb;
-
BUG_ON(!PageLocked(page));
- if (!silent)
- nilfs_warn(sb, "discard dirty page: offset=%lld, ino=%lu",
- page_offset(page), inode->i_ino);
-
- ClearPageUptodate(page);
- ClearPageMappedToDisk(page);
- ClearPageChecked(page);
-
if (page_has_buffers(page)) {
- struct buffer_head *bh, *head;
+ struct buffer_head *bh, *head = page_buffers(page);
const unsigned long clear_bits =
(BIT(BH_Uptodate) | BIT(BH_Dirty) | BIT(BH_Mapped) |
BIT(BH_Async_Write) | BIT(BH_NILFS_Volatile) |
BIT(BH_NILFS_Checked) | BIT(BH_NILFS_Redirected) |
BIT(BH_Delay));
+ bool busy, invalidated = false;
- bh = head = page_buffers(page);
+recheck_buffers:
+ busy = false;
+ bh = head;
do {
- lock_buffer(bh);
- if (!silent)
- nilfs_warn(sb,
- "discard dirty block: blocknr=%llu, size=%zu",
- (u64)bh->b_blocknr, bh->b_size);
+ if (atomic_read(&bh->b_count) | buffer_locked(bh)) {
+ busy = true;
+ break;
+ }
+ } while (bh = bh->b_this_page, bh != head);
+ if (busy) {
+ if (invalidated)
+ return;
+ invalidate_bh_lrus();
+ invalidated = true;
+ goto recheck_buffers;
+ }
+
+ bh = head;
+ do {
+ lock_buffer(bh);
set_mask_bits(&bh->b_state, clear_bits, 0);
unlock_buffer(bh);
} while (bh = bh->b_this_page, bh != head);
}
+ ClearPageUptodate(page);
+ ClearPageMappedToDisk(page);
+ ClearPageChecked(page);
__nilfs_clear_page_dirty(page);
}
diff --git a/fs/nilfs2/page.h b/fs/nilfs2/page.h
index 62b9bb469e92..a5b9b5a457ab 100644
--- a/fs/nilfs2/page.h
+++ b/fs/nilfs2/page.h
@@ -41,8 +41,8 @@ void nilfs_page_bug(struct page *);
int nilfs_copy_dirty_pages(struct address_space *, struct address_space *);
void nilfs_copy_back_pages(struct address_space *, struct address_space *);
-void nilfs_clear_dirty_page(struct page *, bool);
-void nilfs_clear_dirty_pages(struct address_space *, bool);
+void nilfs_clear_dirty_page(struct page *page);
+void nilfs_clear_dirty_pages(struct address_space *mapping);
void nilfs_mapping_init(struct address_space *mapping, struct inode *inode);
unsigned int nilfs_page_count_clean_buffers(struct page *, unsigned int,
unsigned int);
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 75fd6e86f18a..2f778234ecf2 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -732,7 +732,6 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode,
}
if (!page_has_buffers(page))
create_empty_buffers(page, i_blocksize(inode), 0);
- unlock_page(page);
bh = head = page_buffers(page);
do {
@@ -742,11 +741,14 @@ static size_t nilfs_lookup_dirty_data_buffers(struct inode *inode,
list_add_tail(&bh->b_assoc_buffers, listp);
ndirties++;
if (unlikely(ndirties >= nlimit)) {
+ unlock_page(page);
pagevec_release(&pvec);
cond_resched();
return ndirties;
}
} while (bh = bh->b_this_page, bh != head);
+
+ unlock_page(page);
}
pagevec_release(&pvec);
cond_resched();
generated by cgit v1.2.3 (git 2.0.4) at 2025-08-06 17:07:18 +0000