Messages in this thread Patch in this message | | | From | Namjae Jeon <> | Subject | [PATCH 1/4] fat: allocate persistent inode numbers | Date | Sat, 18 Aug 2012 05:42:31 -0400 |
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From: Namjae Jeon <namjae.jeon@samsung.com>
All the files on a FAT partition have an on-disk directory entry. The location of these entries, i_pos, is unique and is constructed by the fat_make_i_pos() function.We can use this as the inode number making it peristent across remounts.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com> Signed-off-by: Ravishankar N <ravi.n1@samsung.com> Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com> --- fs/fat/inode.c | 2 +- fs/fat/namei_vfat.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 973296b..cf111a0 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -458,7 +458,7 @@ struct inode *fat_build_inode(struct super_block *sb, inode = ERR_PTR(-ENOMEM); goto out; } - inode->i_ino = iunique(sb, MSDOS_ROOT_INO); + inode->i_ino = i_pos; inode->i_version = 1; err = fat_fill_inode(inode, de); if (err) { diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index e535dd7..ffb4814 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -954,6 +954,7 @@ static int vfat_rename(struct inode *old_dir, struct dentry *old_dentry, new_dir->i_version++; fat_detach(old_inode); + old_inode->i_ino = new_i_pos; fat_attach(old_inode, new_i_pos); if (IS_DIRSYNC(new_dir)) { err = fat_sync_inode(old_inode); -- 1.7.9.5
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