f2fs: fix to give correct parent inode number for roll forward
When we recover fsync'ed data after power-off-recovery, we should guarantee that any parent inode number should be correct for each direct inode blocks. So, let's make the following rules. - The fsync should do checkpoint to all the inodes that were experienced hard links. - So, the only normal files can be recovered by roll-forward. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim
parent
fa37241743
commit
953a3e27e1
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@ -148,6 +148,7 @@ struct extent_info {
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* i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
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*/
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#define FADVISE_COLD_BIT 0x01
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#define FADVISE_CP_BIT 0x02
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struct f2fs_inode_info {
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struct inode vfs_inode; /* serve a vfs inode */
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@ -825,7 +826,6 @@ static inline int f2fs_clear_bit(unsigned int nr, char *addr)
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/* used for f2fs_inode_info->flags */
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enum {
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FI_NEW_INODE, /* indicate newly allocated inode */
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FI_NEED_CP, /* need to do checkpoint during fsync */
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FI_INC_LINK, /* need to increment i_nlink */
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FI_ACL_MODE, /* indicate acl mode */
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FI_NO_ALLOC, /* should not allocate any blocks */
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@ -103,23 +103,6 @@ static const struct vm_operations_struct f2fs_file_vm_ops = {
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.remap_pages = generic_file_remap_pages,
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};
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static int need_to_sync_dir(struct f2fs_sb_info *sbi, struct inode *inode)
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{
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struct dentry *dentry;
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nid_t pino;
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inode = igrab(inode);
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dentry = d_find_any_alias(inode);
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if (!dentry) {
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iput(inode);
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return 0;
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}
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pino = dentry->d_parent->d_inode->i_ino;
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dput(dentry);
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iput(inode);
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return !is_checkpointed_node(sbi, pino);
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}
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int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
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{
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struct inode *inode = file->f_mapping->host;
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@ -149,17 +132,16 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
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if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
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need_cp = true;
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else if (is_inode_flag_set(F2FS_I(inode), FI_NEED_CP))
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else if (is_cp_file(inode))
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need_cp = true;
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else if (!space_for_roll_forward(sbi))
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need_cp = true;
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else if (need_to_sync_dir(sbi, inode))
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else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
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need_cp = true;
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if (need_cp) {
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/* all the dirty node pages should be flushed for POR */
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ret = f2fs_sync_fs(inode->i_sb, 1);
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clear_inode_flag(F2FS_I(inode), FI_NEED_CP);
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} else {
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/* if there is no written node page, write its inode page */
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while (!sync_node_pages(sbi, inode->i_ino, &wbc)) {
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@ -15,6 +15,7 @@
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#include <linux/ctype.h>
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#include "f2fs.h"
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#include "node.h"
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#include "xattr.h"
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#include "acl.h"
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@ -99,7 +100,7 @@ static int is_multimedia_file(const unsigned char *s, const char *sub)
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/*
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* Set multimedia files as cold files for hot/cold data separation
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*/
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static inline void set_cold_file(struct f2fs_sb_info *sbi, struct inode *inode,
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static inline void set_cold_files(struct f2fs_sb_info *sbi, struct inode *inode,
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const unsigned char *name)
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{
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int i;
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@ -108,7 +109,7 @@ static inline void set_cold_file(struct f2fs_sb_info *sbi, struct inode *inode,
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int count = le32_to_cpu(sbi->raw_super->extension_count);
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for (i = 0; i < count; i++) {
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if (!is_multimedia_file(name, extlist[i])) {
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F2FS_I(inode)->i_advise |= FADVISE_COLD_BIT;
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set_cold_file(inode);
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break;
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}
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}
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@ -130,7 +131,7 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
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return PTR_ERR(inode);
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if (!test_opt(sbi, DISABLE_EXT_IDENTIFY))
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set_cold_file(sbi, inode, dentry->d_name.name);
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set_cold_files(sbi, inode, dentry->d_name.name);
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inode->i_op = &f2fs_file_inode_operations;
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inode->i_fop = &f2fs_file_operations;
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@ -173,6 +174,12 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
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if (err)
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goto out;
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/*
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* This file should be checkpointed during fsync.
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* We lost i_pino from now on.
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*/
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set_cp_file(inode);
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d_instantiate(dentry, inode);
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return 0;
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out:
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@ -425,7 +432,6 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
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}
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old_inode->i_ctime = CURRENT_TIME;
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set_inode_flag(F2FS_I(old_inode), FI_NEED_CP);
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mark_inode_dirty(old_inode);
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f2fs_delete_entry(old_entry, old_page, NULL);
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@ -277,6 +277,21 @@ static inline int is_cold_file(struct inode *inode)
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return F2FS_I(inode)->i_advise & FADVISE_COLD_BIT;
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}
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static inline void set_cold_file(struct inode *inode)
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{
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F2FS_I(inode)->i_advise |= FADVISE_COLD_BIT;
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}
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static inline int is_cp_file(struct inode *inode)
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{
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return F2FS_I(inode)->i_advise & FADVISE_CP_BIT;
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}
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static inline void set_cp_file(struct inode *inode)
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{
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F2FS_I(inode)->i_advise |= FADVISE_CP_BIT;
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}
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static inline int is_cold_data(struct page *page)
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{
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return PageChecked(page);
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