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Diffstat (limited to 'fs/f2fs/data.c')
-rw-r--r--fs/f2fs/data.c125
1 files changed, 102 insertions, 23 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 4e5257c763d0..96f1a354f89f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1086,6 +1086,7 @@ int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count)
for (; count > 0; dn->ofs_in_node++) {
block_t blkaddr = f2fs_data_blkaddr(dn);
+
if (blkaddr == NULL_ADDR) {
dn->data_blkaddr = NEW_ADDR;
__set_data_blkaddr(dn);
@@ -1722,7 +1723,7 @@ static int get_data_block_dio_write(struct inode *inode, sector_t iblock,
return __get_data_block(inode, iblock, bh_result, create,
F2FS_GET_BLOCK_DIO, NULL,
f2fs_rw_hint_to_seg_type(inode->i_write_hint),
- IS_SWAPFILE(inode) ? false : true);
+ true);
}
static int get_data_block_dio(struct inode *inode, sector_t iblock,
@@ -1837,6 +1838,7 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
int ret = 0;
bool compr_cluster = false;
unsigned int cluster_size = F2FS_I(inode)->i_cluster_size;
+ loff_t maxbytes;
if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) {
ret = f2fs_precache_extents(inode);
@@ -1850,6 +1852,15 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
inode_lock(inode);
+ maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
+ if (start > maxbytes) {
+ ret = -EFBIG;
+ goto out;
+ }
+
+ if (len > maxbytes || (maxbytes - len) < start)
+ len = maxbytes - start;
+
if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
ret = f2fs_xattr_fiemap(inode, fieinfo);
goto out;
@@ -3755,6 +3766,7 @@ int f2fs_migrate_page(struct address_space *mapping,
if (atomic_written) {
struct inmem_pages *cur;
+
list_for_each_entry(cur, &fi->inmem_pages, list)
if (cur->page == page) {
cur->page = newpage;
@@ -3780,11 +3792,64 @@ int f2fs_migrate_page(struct address_space *mapping,
#endif
#ifdef CONFIG_SWAP
+static int f2fs_is_file_aligned(struct inode *inode)
+{
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ block_t main_blkaddr = SM_I(sbi)->main_blkaddr;
+ block_t cur_lblock;
+ block_t last_lblock;
+ block_t pblock;
+ unsigned long nr_pblocks;
+ unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
+ int ret = 0;
+
+ cur_lblock = 0;
+ last_lblock = bytes_to_blks(inode, i_size_read(inode));
+
+ while (cur_lblock < last_lblock) {
+ struct f2fs_map_blocks map;
+
+ memset(&map, 0, sizeof(map));
+ map.m_lblk = cur_lblock;
+ map.m_len = last_lblock - cur_lblock;
+ map.m_next_pgofs = NULL;
+ map.m_next_extent = NULL;
+ map.m_seg_type = NO_CHECK_TYPE;
+ map.m_may_create = false;
+
+ ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP);
+ if (ret)
+ goto out;
+
+ /* hole */
+ if (!(map.m_flags & F2FS_MAP_FLAGS)) {
+ f2fs_err(sbi, "Swapfile has holes\n");
+ ret = -ENOENT;
+ goto out;
+ }
+
+ pblock = map.m_pblk;
+ nr_pblocks = map.m_len;
+
+ if ((pblock - main_blkaddr) & (blocks_per_sec - 1) ||
+ nr_pblocks & (blocks_per_sec - 1)) {
+ f2fs_err(sbi, "Swapfile does not align to section");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ cur_lblock += nr_pblocks;
+ }
+out:
+ return ret;
+}
+
static int check_swap_activate_fast(struct swap_info_struct *sis,
struct file *swap_file, sector_t *span)
{
struct address_space *mapping = swap_file->f_mapping;
struct inode *inode = mapping->host;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
sector_t cur_lblock;
sector_t last_lblock;
sector_t pblock;
@@ -3792,8 +3857,8 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
sector_t highest_pblock = 0;
int nr_extents = 0;
unsigned long nr_pblocks;
- u64 len;
- int ret;
+ unsigned int blocks_per_sec = BLKS_PER_SEC(sbi);
+ int ret = 0;
/*
* Map all the blocks into the extent list. This code doesn't try
@@ -3801,31 +3866,41 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
*/
cur_lblock = 0;
last_lblock = bytes_to_blks(inode, i_size_read(inode));
- len = i_size_read(inode);
- while (cur_lblock <= last_lblock && cur_lblock < sis->max) {
+ while (cur_lblock < last_lblock && cur_lblock < sis->max) {
struct f2fs_map_blocks map;
- pgoff_t next_pgofs;
cond_resched();
memset(&map, 0, sizeof(map));
map.m_lblk = cur_lblock;
- map.m_len = bytes_to_blks(inode, len) - cur_lblock;
- map.m_next_pgofs = &next_pgofs;
+ map.m_len = last_lblock - cur_lblock;
+ map.m_next_pgofs = NULL;
+ map.m_next_extent = NULL;
map.m_seg_type = NO_CHECK_TYPE;
+ map.m_may_create = false;
ret = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_FIEMAP);
if (ret)
- goto err_out;
+ goto out;
/* hole */
- if (!(map.m_flags & F2FS_MAP_FLAGS))
- goto err_out;
+ if (!(map.m_flags & F2FS_MAP_FLAGS)) {
+ f2fs_err(sbi, "Swapfile has holes\n");
+ ret = -ENOENT;
+ goto out;
+ }
pblock = map.m_pblk;
nr_pblocks = map.m_len;
+ if ((pblock - SM_I(sbi)->main_blkaddr) & (blocks_per_sec - 1) ||
+ nr_pblocks & (blocks_per_sec - 1)) {
+ f2fs_err(sbi, "Swapfile does not align to section");
+ ret = -EINVAL;
+ goto out;
+ }
+
if (cur_lblock + nr_pblocks >= sis->max)
nr_pblocks = sis->max - cur_lblock;
@@ -3854,9 +3929,6 @@ static int check_swap_activate_fast(struct swap_info_struct *sis,
sis->highest_bit = cur_lblock - 1;
out:
return ret;
-err_out:
- pr_err("swapon: swapfile has holes\n");
- return -EINVAL;
}
/* Copied from generic_swapfile_activate() to check any holes */
@@ -3865,6 +3937,7 @@ static int check_swap_activate(struct swap_info_struct *sis,
{
struct address_space *mapping = swap_file->f_mapping;
struct inode *inode = mapping->host;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
unsigned blocks_per_page;
unsigned long page_no;
sector_t probe_block;
@@ -3872,11 +3945,15 @@ static int check_swap_activate(struct swap_info_struct *sis,
sector_t lowest_block = -1;
sector_t highest_block = 0;
int nr_extents = 0;
- int ret;
+ int ret = 0;
if (PAGE_SIZE == F2FS_BLKSIZE)
return check_swap_activate_fast(sis, swap_file, span);
+ ret = f2fs_is_file_aligned(inode);
+ if (ret)
+ goto out;
+
blocks_per_page = bytes_to_blks(inode, PAGE_SIZE);
/*
@@ -3891,13 +3968,14 @@ static int check_swap_activate(struct swap_info_struct *sis,
unsigned block_in_page;
sector_t first_block;
sector_t block = 0;
- int err = 0;
cond_resched();
block = probe_block;
- err = bmap(inode, &block);
- if (err || !block)
+ ret = bmap(inode, &block);
+ if (ret)
+ goto out;
+ if (!block)
goto bad_bmap;
first_block = block;
@@ -3913,9 +3991,10 @@ static int check_swap_activate(struct swap_info_struct *sis,
block_in_page++) {
block = probe_block + block_in_page;
- err = bmap(inode, &block);
-
- if (err || !block)
+ ret = bmap(inode, &block);
+ if (ret)
+ goto out;
+ if (!block)
goto bad_bmap;
if (block != first_block + block_in_page) {
@@ -3955,8 +4034,8 @@ reprobe:
out:
return ret;
bad_bmap:
- pr_err("swapon: swapfile has holes\n");
- return -EINVAL;
+ f2fs_err(sbi, "Swapfile has holes\n");
+ return -ENOENT;
}
static int f2fs_swap_activate(struct swap_info_struct *sis, struct file *file,
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-19 15:38:42 +0300