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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /fs/nilfs2/file.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'fs/nilfs2/file.c')
-rw-r--r--fs/nilfs2/file.c165
1 files changed, 165 insertions, 0 deletions
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 <linux/fs.h>
+#include <linux/filelock.h>
+#include <linux/mm.h>
+#include <linux/writeback.h>
+#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 */