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f2fs-for-6.16-rc4

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There are two bug fixes: 1) double-unlock introduced by the recent folio
 conversion, 2) stale page content beyond eof complained by xfstests/generic/363.
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Merge tag 'f2fs-for-6.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs fixes from Jaegeuk Kim:

 - fix double-unlock introduced by the recent folio conversion

 - fix stale page content beyond EOF complained by xfstests/generic/363

* tag 'f2fs-for-6.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: fix to zero post-eof page
  f2fs: Fix __write_node_folio() conversion
This commit is contained in:
Linus Torvalds 2025-06-23 14:55:40 -07:00
commit cb0de0e220
2 changed files with 38 additions and 1 deletions
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38
fs/f2fs/file.c
View File

@ -35,6 +35,17 @@
#include <trace/events/f2fs.h>
#include <uapi/linux/f2fs.h>
static void f2fs_zero_post_eof_page(struct inode *inode, loff_t new_size)
{
loff_t old_size = i_size_read(inode);
if (old_size >= new_size)
return;
/* zero or drop pages only in range of [old_size, new_size] */
truncate_pagecache(inode, old_size);
}
static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
{
struct inode *inode = file_inode(vmf->vma->vm_file);
@ -103,8 +114,13 @@ static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
filemap_invalidate_lock(inode->i_mapping);
f2fs_zero_post_eof_page(inode, (folio->index + 1) << PAGE_SHIFT);
filemap_invalidate_unlock(inode->i_mapping);
file_update_time(vmf->vma->vm_file);
filemap_invalidate_lock_shared(inode->i_mapping);
folio_lock(folio);
if (unlikely(folio->mapping != inode->i_mapping ||
folio_pos(folio) > i_size_read(inode) ||
@ -1109,6 +1125,8 @@ int f2fs_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
f2fs_down_write(&fi->i_gc_rwsem[WRITE]);
filemap_invalidate_lock(inode->i_mapping);
if (attr->ia_size > old_size)
f2fs_zero_post_eof_page(inode, attr->ia_size);
truncate_setsize(inode, attr->ia_size);
if (attr->ia_size <= old_size)
@ -1227,6 +1245,10 @@ static int f2fs_punch_hole(struct inode *inode, loff_t offset, loff_t len)
if (ret)
return ret;
filemap_invalidate_lock(inode->i_mapping);
f2fs_zero_post_eof_page(inode, offset + len);
filemap_invalidate_unlock(inode->i_mapping);
pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
@ -1510,6 +1532,8 @@ static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
filemap_invalidate_lock(inode->i_mapping);
f2fs_zero_post_eof_page(inode, offset + len);
f2fs_lock_op(sbi);
f2fs_drop_extent_tree(inode);
truncate_pagecache(inode, offset);
@ -1631,6 +1655,10 @@ static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
if (ret)
return ret;
filemap_invalidate_lock(mapping);
f2fs_zero_post_eof_page(inode, offset + len);
filemap_invalidate_unlock(mapping);
pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
@ -1762,6 +1790,8 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
/* avoid gc operation during block exchange */
f2fs_down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
filemap_invalidate_lock(mapping);
f2fs_zero_post_eof_page(inode, offset + len);
truncate_pagecache(inode, offset);
while (!ret && idx > pg_start) {
@ -1819,6 +1849,10 @@ static int f2fs_expand_inode_data(struct inode *inode, loff_t offset,
if (err)
return err;
filemap_invalidate_lock(inode->i_mapping);
f2fs_zero_post_eof_page(inode, offset + len);
filemap_invalidate_unlock(inode->i_mapping);
f2fs_balance_fs(sbi, true);
pg_start = ((unsigned long long)offset) >> PAGE_SHIFT;
@ -4860,6 +4894,10 @@ static ssize_t f2fs_write_checks(struct kiocb *iocb, struct iov_iter *from)
err = file_modified(file);
if (err)
return err;
filemap_invalidate_lock(inode->i_mapping);
f2fs_zero_post_eof_page(inode, iocb->ki_pos + iov_iter_count(from));
filemap_invalidate_unlock(inode->i_mapping);
return count;
}

1
fs/f2fs/node.c
View File

@ -2078,7 +2078,6 @@ write_node:
if (!__write_node_folio(folio, false, &submitted,
wbc, do_balance, io_type, NULL)) {
folio_unlock(folio);
folio_batch_release(&fbatch);
ret = -EIO;
goto out;