diff options
Diffstat (limited to 'fs/ext4/inline.c')
| -rw-r--r-- | fs/ext4/inline.c | 60 |
1 files changed, 38 insertions, 22 deletions
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c index 28c5c3abddb3..70cf4c7b268a 100644 --- a/fs/ext4/inline.c +++ b/fs/ext4/inline.c @@ -1,18 +1,12 @@ +// SPDX-License-Identifier: LGPL-2.1 /* * Copyright (c) 2012 Taobao. * Written by Tao Ma <boyu.mt@taobao.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2.1 of the GNU Lesser General Public License - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ +#include <linux/iomap.h> #include <linux/fiemap.h> +#include <linux/iversion.h> #include "ext4_jbd2.h" #include "ext4.h" @@ -302,11 +296,6 @@ static int ext4_create_inline_data(handle_t *handle, EXT4_I(inode)->i_inline_size = len + EXT4_MIN_INLINE_DATA_SIZE; ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS); ext4_set_inode_flag(inode, EXT4_INODE_INLINE_DATA); - /* - * Propagate changes to inode->i_flags as well - e.g. S_DAX may - * get cleared - */ - ext4_set_inode_flags(inode); get_bh(is.iloc.bh); error = ext4_mark_iloc_dirty(handle, inode, &is.iloc); @@ -451,11 +440,6 @@ static int ext4_destroy_inline_data_nolock(handle_t *handle, } } ext4_clear_inode_flag(inode, EXT4_INODE_INLINE_DATA); - /* - * Propagate changes to inode->i_flags as well - e.g. S_DAX may - * get set. - */ - ext4_set_inode_flags(inode); get_bh(is.iloc.bh); error = ext4_mark_iloc_dirty(handle, inode, &is.iloc); @@ -1051,7 +1035,7 @@ static int ext4_add_dirent_to_inline(handle_t *handle, */ dir->i_mtime = dir->i_ctime = current_time(dir); ext4_update_dx_flag(dir); - dir->i_version++; + inode_inc_iversion(dir); return 1; } @@ -1503,7 +1487,7 @@ int ext4_read_inline_dir(struct file *file, * dirent right now. Scan from the start of the inline * dir to make sure. */ - if (file->f_version != inode->i_version) { + if (!inode_eq_iversion(inode, file->f_version)) { for (i = 0; i < extra_size && i < offset;) { /* * "." is with offset 0 and @@ -1535,7 +1519,7 @@ int ext4_read_inline_dir(struct file *file, } offset = i; ctx->pos = offset; - file->f_version = inode->i_version; + file->f_version = inode_query_iversion(inode); } while (ctx->pos < extra_size) { @@ -1827,6 +1811,38 @@ int ext4_destroy_inline_data(handle_t *handle, struct inode *inode) return ret; } +int ext4_inline_data_iomap(struct inode *inode, struct iomap *iomap) +{ + __u64 addr; + int error = -EAGAIN; + struct ext4_iloc iloc; + + down_read(&EXT4_I(inode)->xattr_sem); + if (!ext4_has_inline_data(inode)) + goto out; + + error = ext4_get_inode_loc(inode, &iloc); + if (error) + goto out; + + addr = (__u64)iloc.bh->b_blocknr << inode->i_sb->s_blocksize_bits; + addr += (char *)ext4_raw_inode(&iloc) - iloc.bh->b_data; + addr += offsetof(struct ext4_inode, i_block); + + brelse(iloc.bh); + + iomap->addr = addr; + iomap->offset = 0; + iomap->length = min_t(loff_t, ext4_get_inline_size(inode), + i_size_read(inode)); + iomap->type = 0; + iomap->flags = IOMAP_F_DATA_INLINE; + +out: + up_read(&EXT4_I(inode)->xattr_sem); + return error; +} + int ext4_inline_data_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, int *has_inline, __u64 start, __u64 len) |