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Diffstat (limited to 'fs/nilfs2/inode.c')
-rw-r--r--fs/nilfs2/inode.c93
1 files changed, 71 insertions, 22 deletions
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 7cc64465ec26..b1a5277cfd18 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -25,7 +25,7 @@
#include <linux/gfp.h>
#include <linux/mpage.h>
#include <linux/writeback.h>
-#include <linux/uio.h>
+#include <linux/aio.h>
#include "nilfs.h"
#include "btnode.h"
#include "segment.h"
@@ -34,6 +34,13 @@
#include "cpfile.h"
#include "ifile.h"
+/**
+ * struct nilfs_iget_args - arguments used during comparison between inodes
+ * @ino: inode number
+ * @cno: checkpoint number
+ * @root: pointer on NILFS root object (mounted checkpoint)
+ * @for_gc: inode for GC flag
+ */
struct nilfs_iget_args {
u64 ino;
__u64 cno;
@@ -47,7 +54,7 @@ void nilfs_inode_add_blocks(struct inode *inode, int n)
inode_add_bytes(inode, (1 << inode->i_blkbits) * n);
if (root)
- atomic_add(n, &root->blocks_count);
+ atomic64_add(n, &root->blocks_count);
}
void nilfs_inode_sub_blocks(struct inode *inode, int n)
@@ -56,7 +63,7 @@ void nilfs_inode_sub_blocks(struct inode *inode, int n)
inode_sub_bytes(inode, (1 << inode->i_blkbits) * n);
if (root)
- atomic_sub(n, &root->blocks_count);
+ atomic64_sub(n, &root->blocks_count);
}
/**
@@ -168,6 +175,11 @@ static int nilfs_writepages(struct address_space *mapping,
struct inode *inode = mapping->host;
int err = 0;
+ if (inode->i_sb->s_flags & MS_RDONLY) {
+ nilfs_clear_dirty_pages(mapping, false);
+ return -EROFS;
+ }
+
if (wbc->sync_mode == WB_SYNC_ALL)
err = nilfs_construct_dsync_segment(inode->i_sb, inode,
wbc->range_start,
@@ -180,6 +192,18 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
struct inode *inode = page->mapping->host;
int err;
+ if (inode->i_sb->s_flags & MS_RDONLY) {
+ /*
+ * It means that filesystem was remounted in read-only
+ * mode because of error or metadata corruption. But we
+ * have dirty pages that try to be flushed in background.
+ * So, here we simply discard this dirty page.
+ */
+ nilfs_clear_dirty_page(page, false);
+ unlock_page(page);
+ return -EROFS;
+ }
+
redirty_page_for_writepage(wbc, page);
unlock_page(page);
@@ -195,17 +219,46 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc)
static int nilfs_set_page_dirty(struct page *page)
{
- int ret = __set_page_dirty_buffers(page);
+ int ret = __set_page_dirty_nobuffers(page);
- if (ret) {
+ if (page_has_buffers(page)) {
struct inode *inode = page->mapping->host;
- unsigned nr_dirty = 1 << (PAGE_SHIFT - inode->i_blkbits);
+ unsigned nr_dirty = 0;
+ struct buffer_head *bh, *head;
- nilfs_set_file_dirty(inode, nr_dirty);
+ /*
+ * This page is locked by callers, and no other thread
+ * concurrently marks its buffers dirty since they are
+ * only dirtied through routines in fs/buffer.c in
+ * which call sites of mark_buffer_dirty are protected
+ * by page lock.
+ */
+ bh = head = page_buffers(page);
+ do {
+ /* Do not mark hole blocks dirty */
+ if (buffer_dirty(bh) || !buffer_mapped(bh))
+ continue;
+
+ set_buffer_dirty(bh);
+ nr_dirty++;
+ } while (bh = bh->b_this_page, bh != head);
+
+ if (nr_dirty)
+ nilfs_set_file_dirty(inode, nr_dirty);
}
return ret;
}
+void nilfs_write_failed(struct address_space *mapping, loff_t to)
+{
+ struct inode *inode = mapping->host;
+
+ if (to > inode->i_size) {
+ truncate_pagecache(inode, to, inode->i_size);
+ nilfs_truncate(inode);
+ }
+}
+
static int nilfs_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
@@ -220,10 +273,7 @@ static int nilfs_write_begin(struct file *file, struct address_space *mapping,
err = block_write_begin(mapping, pos, len, flags, pagep,
nilfs_get_block);
if (unlikely(err)) {
- loff_t isize = mapping->host->i_size;
- if (pos + len > isize)
- vmtruncate(mapping->host, isize);
-
+ nilfs_write_failed(mapping, pos + len);
nilfs_transaction_abort(inode->i_sb);
}
return err;
@@ -252,6 +302,7 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
loff_t offset, unsigned long nr_segs)
{
struct file *file = iocb->ki_filp;
+ struct address_space *mapping = file->f_mapping;
struct inode *inode = file->f_mapping->host;
ssize_t size;
@@ -271,7 +322,7 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
loff_t end = offset + iov_length(iov, nr_segs);
if (end > isize)
- vmtruncate(inode, isize);
+ nilfs_write_failed(mapping, end);
}
return size;
@@ -318,7 +369,7 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
goto failed_ifile_create_inode;
/* reference count of i_bh inherits from nilfs_mdt_read_block() */
- atomic_inc(&root->inodes_count);
+ atomic64_inc(&root->inodes_count);
inode_init_owner(inode, dir, mode);
inode->i_ino = ino;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
@@ -394,8 +445,8 @@ int nilfs_read_inode_common(struct inode *inode,
int err;
inode->i_mode = le16_to_cpu(raw_inode->i_mode);
- inode->i_uid = (uid_t)le32_to_cpu(raw_inode->i_uid);
- inode->i_gid = (gid_t)le32_to_cpu(raw_inode->i_gid);
+ i_uid_write(inode, le32_to_cpu(raw_inode->i_uid));
+ i_gid_write(inode, le32_to_cpu(raw_inode->i_gid));
set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
inode->i_size = le64_to_cpu(raw_inode->i_size);
inode->i_atime.tv_sec = le64_to_cpu(raw_inode->i_mtime);
@@ -583,8 +634,8 @@ void nilfs_write_inode_common(struct inode *inode,
struct nilfs_inode_info *ii = NILFS_I(inode);
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
- raw_inode->i_uid = cpu_to_le32(inode->i_uid);
- raw_inode->i_gid = cpu_to_le32(inode->i_gid);
+ raw_inode->i_uid = cpu_to_le32(i_uid_read(inode));
+ raw_inode->i_gid = cpu_to_le32(i_gid_read(inode));
raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
raw_inode->i_size = cpu_to_le64(inode->i_size);
raw_inode->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
@@ -750,7 +801,7 @@ void nilfs_evict_inode(struct inode *inode)
ret = nilfs_ifile_delete_inode(ii->i_root->ifile, inode->i_ino);
if (!ret)
- atomic_dec(&ii->i_root->inodes_count);
+ atomic64_dec(&ii->i_root->inodes_count);
nilfs_clear_inode(inode);
@@ -779,10 +830,8 @@ int nilfs_setattr(struct dentry *dentry, struct iattr *iattr)
if ((iattr->ia_valid & ATTR_SIZE) &&
iattr->ia_size != i_size_read(inode)) {
inode_dio_wait(inode);
-
- err = vmtruncate(inode, iattr->ia_size);
- if (unlikely(err))
- goto out_err;
+ truncate_setsize(inode, iattr->ia_size);
+ nilfs_truncate(inode);
}
setattr_copy(inode, iattr);
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 11:49:40 +0000