From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- fs/nilfs2/file.c | 165 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 165 insertions(+) create mode 100644 fs/nilfs2/file.c (limited to 'fs/nilfs2/file.c') diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c new file mode 100644 index 000000000..f93b68c48 --- /dev/null +++ b/fs/nilfs2/file.c @@ -0,0 +1,165 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * NILFS regular file handling primitives including fsync(). + * + * Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. + * + * Written by Amagai Yoshiji and Ryusuke Konishi. + */ + +#include +#include +#include +#include +#include "nilfs.h" +#include "segment.h" + +int nilfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) +{ + /* + * Called from fsync() system call + * This is the only entry point that can catch write and synch + * timing for both data blocks and intermediate blocks. + * + * This function should be implemented when the writeback function + * will be implemented. + */ + struct the_nilfs *nilfs; + struct inode *inode = file->f_mapping->host; + int err = 0; + + if (nilfs_inode_dirty(inode)) { + if (datasync) + err = nilfs_construct_dsync_segment(inode->i_sb, inode, + start, end); + else + err = nilfs_construct_segment(inode->i_sb); + } + + nilfs = inode->i_sb->s_fs_info; + if (!err) + err = nilfs_flush_device(nilfs); + + return err; +} + +static vm_fault_t nilfs_page_mkwrite(struct vm_fault *vmf) +{ + struct vm_area_struct *vma = vmf->vma; + struct folio *folio = page_folio(vmf->page); + struct inode *inode = file_inode(vma->vm_file); + struct nilfs_transaction_info ti; + struct buffer_head *bh, *head; + int ret = 0; + + if (unlikely(nilfs_near_disk_full(inode->i_sb->s_fs_info))) + return VM_FAULT_SIGBUS; /* -ENOSPC */ + + sb_start_pagefault(inode->i_sb); + folio_lock(folio); + if (folio->mapping != inode->i_mapping || + folio_pos(folio) >= i_size_read(inode) || + !folio_test_uptodate(folio)) { + folio_unlock(folio); + ret = -EFAULT; /* make the VM retry the fault */ + goto out; + } + + /* + * check to see if the folio is mapped already (no holes) + */ + if (folio_test_mappedtodisk(folio)) + goto mapped; + + head = folio_buffers(folio); + if (head) { + int fully_mapped = 1; + + bh = head; + do { + if (!buffer_mapped(bh)) { + fully_mapped = 0; + break; + } + } while (bh = bh->b_this_page, bh != head); + + if (fully_mapped) { + folio_set_mappedtodisk(folio); + goto mapped; + } + } + folio_unlock(folio); + + /* + * fill hole blocks + */ + ret = nilfs_transaction_begin(inode->i_sb, &ti, 1); + /* never returns -ENOMEM, but may return -ENOSPC */ + if (unlikely(ret)) + goto out; + + file_update_time(vma->vm_file); + ret = block_page_mkwrite(vma, vmf, nilfs_get_block); + if (ret) { + nilfs_transaction_abort(inode->i_sb); + goto out; + } + nilfs_set_file_dirty(inode, 1 << (PAGE_SHIFT - inode->i_blkbits)); + nilfs_transaction_commit(inode->i_sb); + + mapped: + /* + * Since checksumming including data blocks is performed to determine + * the validity of the log to be written and used for recovery, it is + * necessary to wait for writeback to finish here, regardless of the + * stable write requirement of the backing device. + */ + folio_wait_writeback(folio); + out: + sb_end_pagefault(inode->i_sb); + return vmf_fs_error(ret); +} + +static const struct vm_operations_struct nilfs_file_vm_ops = { + .fault = filemap_fault, + .map_pages = filemap_map_pages, + .page_mkwrite = nilfs_page_mkwrite, +}; + +static int nilfs_file_mmap_prepare(struct vm_area_desc *desc) +{ + file_accessed(desc->file); + desc->vm_ops = &nilfs_file_vm_ops; + return 0; +} + +/* + * We have mostly NULL's here: the current defaults are ok for + * the nilfs filesystem. + */ +const struct file_operations nilfs_file_operations = { + .llseek = generic_file_llseek, + .read_iter = generic_file_read_iter, + .write_iter = generic_file_write_iter, + .unlocked_ioctl = nilfs_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = nilfs_compat_ioctl, +#endif /* CONFIG_COMPAT */ + .mmap_prepare = nilfs_file_mmap_prepare, + .open = generic_file_open, + /* .release = nilfs_release_file, */ + .fsync = nilfs_sync_file, + .splice_read = filemap_splice_read, + .splice_write = iter_file_splice_write, + .setlease = generic_setlease, +}; + +const struct inode_operations nilfs_file_inode_operations = { + .setattr = nilfs_setattr, + .permission = nilfs_permission, + .fiemap = nilfs_fiemap, + .fileattr_get = nilfs_fileattr_get, + .fileattr_set = nilfs_fileattr_set, +}; + +/* end of file */ -- cgit v1.3.1