static struct kmem_cache *bio_post_read_ctx_cache;
static struct kmem_cache *bio_entry_slab;
static mempool_t *bio_post_read_ctx_pool;
+static struct bio_set f2fs_bioset;
+
+#define F2FS_BIO_POOL_SIZE NR_CURSEG_TYPE
+
+int __init f2fs_init_bioset(void)
+{
+ if (bioset_init(&f2fs_bioset, F2FS_BIO_POOL_SIZE,
+ 0, BIOSET_NEED_BVECS))
+ return -ENOMEM;
+ return 0;
+}
+
+void f2fs_destroy_bioset(void)
+{
+ bioset_exit(&f2fs_bioset);
+}
+
+static inline struct bio *__f2fs_bio_alloc(gfp_t gfp_mask,
+ unsigned int nr_iovecs)
+{
+ return bio_alloc_bioset(gfp_mask, nr_iovecs, &f2fs_bioset);
+}
+
+struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool no_fail)
+{
+ struct bio *bio;
+
+ if (no_fail) {
+ /* No failure on bio allocation */
+ bio = __f2fs_bio_alloc(GFP_NOIO, npages);
+ if (!bio)
+ bio = __f2fs_bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages);
+ return bio;
+ }
+ if (time_to_inject(sbi, FAULT_ALLOC_BIO)) {
+ f2fs_show_injection_info(sbi, FAULT_ALLOC_BIO);
+ return NULL;
+ }
+
+ return __f2fs_bio_alloc(GFP_KERNEL, npages);
+}
static bool __is_cp_guaranteed(struct page *page)
{
if (!mapping)
return false;
+ if (f2fs_is_compressed_page(page))
+ return false;
+
inode = mapping->host;
sbi = F2FS_I_SB(inode);
/* postprocessing steps for read bios */
enum bio_post_read_step {
- STEP_INITIAL = 0,
STEP_DECRYPT,
+ STEP_DECOMPRESS,
STEP_VERITY,
};
struct bio_post_read_ctx {
struct bio *bio;
+ struct f2fs_sb_info *sbi;
struct work_struct work;
- unsigned int cur_step;
unsigned int enabled_steps;
};
-static void __read_end_io(struct bio *bio)
+static void __read_end_io(struct bio *bio, bool compr, bool verity)
{
struct page *page;
struct bio_vec *bv;
bio_for_each_segment_all(bv, bio, iter_all) {
page = bv->bv_page;
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (compr && f2fs_is_compressed_page(page)) {
+ f2fs_decompress_pages(bio, page, verity);
+ continue;
+ }
+#endif
+
/* PG_error was set if any post_read step failed */
if (bio->bi_status || PageError(page)) {
ClearPageUptodate(page);
dec_page_count(F2FS_P_SB(page), __read_io_type(page));
unlock_page(page);
}
- if (bio->bi_private)
- mempool_free(bio->bi_private, bio_post_read_ctx_pool);
- bio_put(bio);
+}
+
+static void f2fs_release_read_bio(struct bio *bio);
+static void __f2fs_read_end_io(struct bio *bio, bool compr, bool verity)
+{
+ if (!compr)
+ __read_end_io(bio, false, verity);
+ f2fs_release_read_bio(bio);
+}
+
+static void f2fs_decompress_bio(struct bio *bio, bool verity)
+{
+ __read_end_io(bio, true, verity);
}
static void bio_post_read_processing(struct bio_post_read_ctx *ctx);
-static void decrypt_work(struct work_struct *work)
+static void f2fs_decrypt_work(struct bio_post_read_ctx *ctx)
+{
+ fscrypt_decrypt_bio(ctx->bio);
+}
+
+static void f2fs_decompress_work(struct bio_post_read_ctx *ctx)
+{
+ f2fs_decompress_bio(ctx->bio, ctx->enabled_steps & (1 << STEP_VERITY));
+}
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+static void f2fs_verify_pages(struct page **rpages, unsigned int cluster_size)
+{
+ f2fs_decompress_end_io(rpages, cluster_size, false, true);
+}
+
+static void f2fs_verify_bio(struct bio *bio)
+{
+ struct page *page = bio_first_page_all(bio);
+ struct decompress_io_ctx *dic =
+ (struct decompress_io_ctx *)page_private(page);
+
+ f2fs_verify_pages(dic->rpages, dic->cluster_size);
+ f2fs_free_dic(dic);
+}
+#endif
+
+static void f2fs_verity_work(struct work_struct *work)
{
struct bio_post_read_ctx *ctx =
container_of(work, struct bio_post_read_ctx, work);
+ struct bio *bio = ctx->bio;
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ unsigned int enabled_steps = ctx->enabled_steps;
+#endif
- fscrypt_decrypt_bio(ctx->bio);
+ /*
+ * fsverity_verify_bio() may call readpages() again, and while verity
+ * will be disabled for this, decryption may still be needed, resulting
+ * in another bio_post_read_ctx being allocated. So to prevent
+ * deadlocks we need to release the current ctx to the mempool first.
+ * This assumes that verity is the last post-read step.
+ */
+ mempool_free(ctx, bio_post_read_ctx_pool);
+ bio->bi_private = NULL;
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ /* previous step is decompression */
+ if (enabled_steps & (1 << STEP_DECOMPRESS)) {
+ f2fs_verify_bio(bio);
+ f2fs_release_read_bio(bio);
+ return;
+ }
+#endif
- bio_post_read_processing(ctx);
+ fsverity_verify_bio(bio);
+ __f2fs_read_end_io(bio, false, false);
}
-static void verity_work(struct work_struct *work)
+static void f2fs_post_read_work(struct work_struct *work)
{
struct bio_post_read_ctx *ctx =
container_of(work, struct bio_post_read_ctx, work);
- fsverity_verify_bio(ctx->bio);
+ if (ctx->enabled_steps & (1 << STEP_DECRYPT))
+ f2fs_decrypt_work(ctx);
- bio_post_read_processing(ctx);
+ if (ctx->enabled_steps & (1 << STEP_DECOMPRESS))
+ f2fs_decompress_work(ctx);
+
+ if (ctx->enabled_steps & (1 << STEP_VERITY)) {
+ INIT_WORK(&ctx->work, f2fs_verity_work);
+ fsverity_enqueue_verify_work(&ctx->work);
+ return;
+ }
+
+ __f2fs_read_end_io(ctx->bio,
+ ctx->enabled_steps & (1 << STEP_DECOMPRESS), false);
+}
+
+static void f2fs_enqueue_post_read_work(struct f2fs_sb_info *sbi,
+ struct work_struct *work)
+{
+ queue_work(sbi->post_read_wq, work);
}
static void bio_post_read_processing(struct bio_post_read_ctx *ctx)
* verity may require reading metadata pages that need decryption, and
* we shouldn't recurse to the same workqueue.
*/
- switch (++ctx->cur_step) {
- case STEP_DECRYPT:
- if (ctx->enabled_steps & (1 << STEP_DECRYPT)) {
- INIT_WORK(&ctx->work, decrypt_work);
- fscrypt_enqueue_decrypt_work(&ctx->work);
- return;
- }
- ctx->cur_step++;
- /* fall-through */
- case STEP_VERITY:
- if (ctx->enabled_steps & (1 << STEP_VERITY)) {
- INIT_WORK(&ctx->work, verity_work);
- fsverity_enqueue_verify_work(&ctx->work);
- return;
- }
- ctx->cur_step++;
- /* fall-through */
- default:
- __read_end_io(ctx->bio);
+
+ if (ctx->enabled_steps & (1 << STEP_DECRYPT) ||
+ ctx->enabled_steps & (1 << STEP_DECOMPRESS)) {
+ INIT_WORK(&ctx->work, f2fs_post_read_work);
+ f2fs_enqueue_post_read_work(ctx->sbi, &ctx->work);
+ return;
}
+
+ if (ctx->enabled_steps & (1 << STEP_VERITY)) {
+ INIT_WORK(&ctx->work, f2fs_verity_work);
+ fsverity_enqueue_verify_work(&ctx->work);
+ return;
+ }
+
+ __f2fs_read_end_io(ctx->bio, false, false);
}
static bool f2fs_bio_post_read_required(struct bio *bio)
{
- return bio->bi_private && !bio->bi_status;
+ return bio->bi_private;
}
static void f2fs_read_end_io(struct bio *bio)
if (f2fs_bio_post_read_required(bio)) {
struct bio_post_read_ctx *ctx = bio->bi_private;
- ctx->cur_step = STEP_INITIAL;
bio_post_read_processing(ctx);
return;
}
- __read_end_io(bio);
+ __f2fs_read_end_io(bio, false, false);
}
static void f2fs_write_end_io(struct bio *bio)
fscrypt_finalize_bounce_page(&page);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_is_compressed_page(page)) {
+ f2fs_compress_write_end_io(bio, page);
+ continue;
+ }
+#endif
+
if (unlikely(bio->bi_status)) {
mapping_set_error(page->mapping, -EIO);
if (type == F2FS_WB_CP_DATA)
submit_bio(bio);
}
+void f2fs_submit_bio(struct f2fs_sb_info *sbi,
+ struct bio *bio, enum page_type type)
+{
+ __submit_bio(sbi, bio, type);
+}
+
static void __submit_merged_bio(struct f2fs_bio_info *io)
{
struct f2fs_io_info *fio = &io->fio;
struct page *page, nid_t ino)
{
struct bio_vec *bvec;
- struct page *target;
struct bvec_iter_all iter_all;
if (!bio)
return true;
bio_for_each_segment_all(bvec, bio, iter_all) {
+ struct page *target = bvec->bv_page;
- target = bvec->bv_page;
- if (fscrypt_is_bounce_page(target))
+ if (fscrypt_is_bounce_page(target)) {
target = fscrypt_pagecache_page(target);
+ if (IS_ERR(target))
+ continue;
+ }
+ if (f2fs_is_compressed_page(target)) {
+ target = f2fs_compress_control_page(target);
+ if (IS_ERR(target))
+ continue;
+ }
if (inode && inode == target->mapping->host)
return true;
found = true;
- if (bio_add_page(*bio, page, PAGE_SIZE, 0) == PAGE_SIZE) {
+ if (bio_add_page(*bio, page, PAGE_SIZE, 0) ==
+ PAGE_SIZE) {
ret = 0;
break;
}
verify_fio_blkaddr(fio);
- bio_page = fio->encrypted_page ? fio->encrypted_page : fio->page;
+ if (fio->encrypted_page)
+ bio_page = fio->encrypted_page;
+ else if (fio->compressed_page)
+ bio_page = fio->compressed_page;
+ else
+ bio_page = fio->page;
/* set submitted = true as a return value */
fio->submitted = true;
if (f2fs_encrypted_file(inode))
post_read_steps |= 1 << STEP_DECRYPT;
-
+ if (f2fs_compressed_file(inode))
+ post_read_steps |= 1 << STEP_DECOMPRESS;
if (f2fs_need_verity(inode, first_idx))
post_read_steps |= 1 << STEP_VERITY;
if (post_read_steps) {
+ /* Due to the mempool, this never fails. */
ctx = mempool_alloc(bio_post_read_ctx_pool, GFP_NOFS);
- if (!ctx) {
- bio_put(bio);
- return ERR_PTR(-ENOMEM);
- }
ctx->bio = bio;
+ ctx->sbi = sbi;
ctx->enabled_steps = post_read_steps;
bio->bi_private = ctx;
}
return bio;
}
+static void f2fs_release_read_bio(struct bio *bio)
+{
+ if (bio->bi_private)
+ mempool_free(bio->bi_private, bio_post_read_ctx_pool);
+ bio_put(bio);
+}
+
/* This can handle encryption stuffs */
static int f2fs_submit_page_read(struct inode *inode, struct page *page,
block_t blkaddr)
int err = 0;
bool direct_io = iocb->ki_flags & IOCB_DIRECT;
- /* convert inline data for Direct I/O*/
- if (direct_io) {
- err = f2fs_convert_inline_inode(inode);
- if (err)
- return err;
- }
-
- if (direct_io && allow_outplace_dio(inode, iocb, from))
- return 0;
-
- if (is_inode_flag_set(inode, FI_NO_PREALLOC))
- return 0;
-
map.m_lblk = F2FS_BLK_ALIGN(iocb->ki_pos);
map.m_len = F2FS_BYTES_TO_BLK(iocb->ki_pos + iov_iter_count(from));
if (map.m_len > map.m_lblk)
return ret;
}
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
+ unsigned nr_pages, sector_t *last_block_in_bio,
+ bool is_readahead)
+{
+ struct dnode_of_data dn;
+ struct inode *inode = cc->inode;
+ struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
+ struct bio *bio = *bio_ret;
+ unsigned int start_idx = cc->cluster_idx << cc->log_cluster_size;
+ sector_t last_block_in_file;
+ const unsigned blkbits = inode->i_blkbits;
+ const unsigned blocksize = 1 << blkbits;
+ struct decompress_io_ctx *dic = NULL;
+ int i;
+ int ret = 0;
+
+ f2fs_bug_on(sbi, f2fs_cluster_is_empty(cc));
+
+ last_block_in_file = (i_size_read(inode) + blocksize - 1) >> blkbits;
+
+ /* get rid of pages beyond EOF */
+ for (i = 0; i < cc->cluster_size; i++) {
+ struct page *page = cc->rpages[i];
+
+ if (!page)
+ continue;
+ if ((sector_t)page->index >= last_block_in_file) {
+ zero_user_segment(page, 0, PAGE_SIZE);
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
+ } else if (!PageUptodate(page)) {
+ continue;
+ }
+ unlock_page(page);
+ cc->rpages[i] = NULL;
+ cc->nr_rpages--;
+ }
+
+ /* we are done since all pages are beyond EOF */
+ if (f2fs_cluster_is_empty(cc))
+ goto out;
+
+ set_new_dnode(&dn, inode, NULL, NULL, 0);
+ ret = f2fs_get_dnode_of_data(&dn, start_idx, LOOKUP_NODE);
+ if (ret)
+ goto out;
+
+ /* cluster was overwritten as normal cluster */
+ if (dn.data_blkaddr != COMPRESS_ADDR)
+ goto out;
+
+ for (i = 1; i < cc->cluster_size; i++) {
+ block_t blkaddr;
+
+ blkaddr = datablock_addr(dn.inode, dn.node_page,
+ dn.ofs_in_node + i);
+
+ if (!__is_valid_data_blkaddr(blkaddr))
+ break;
+
+ if (!f2fs_is_valid_blkaddr(sbi, blkaddr, DATA_GENERIC)) {
+ ret = -EFAULT;
+ goto out_put_dnode;
+ }
+ cc->nr_cpages++;
+ }
+
+ /* nothing to decompress */
+ if (cc->nr_cpages == 0) {
+ ret = 0;
+ goto out_put_dnode;
+ }
+
+ dic = f2fs_alloc_dic(cc);
+ if (IS_ERR(dic)) {
+ ret = PTR_ERR(dic);
+ goto out_put_dnode;
+ }
+
+ for (i = 0; i < dic->nr_cpages; i++) {
+ struct page *page = dic->cpages[i];
+ block_t blkaddr;
+
+ blkaddr = datablock_addr(dn.inode, dn.node_page,
+ dn.ofs_in_node + i + 1);
+
+ if (bio && !page_is_mergeable(sbi, bio,
+ *last_block_in_bio, blkaddr)) {
+submit_and_realloc:
+ __submit_bio(sbi, bio, DATA);
+ bio = NULL;
+ }
+
+ if (!bio) {
+ bio = f2fs_grab_read_bio(inode, blkaddr, nr_pages,
+ is_readahead ? REQ_RAHEAD : 0,
+ page->index);
+ if (IS_ERR(bio)) {
+ ret = PTR_ERR(bio);
+ bio = NULL;
+ dic->failed = true;
+ if (refcount_sub_and_test(dic->nr_cpages - i,
+ &dic->ref))
+ f2fs_decompress_end_io(dic->rpages,
+ cc->cluster_size, true,
+ false);
+ f2fs_free_dic(dic);
+ f2fs_put_dnode(&dn);
+ *bio_ret = bio;
+ return ret;
+ }
+ }
+
+ f2fs_wait_on_block_writeback(inode, blkaddr);
+
+ if (bio_add_page(bio, page, blocksize, 0) < blocksize)
+ goto submit_and_realloc;
+
+ inc_page_count(sbi, F2FS_RD_DATA);
+ ClearPageError(page);
+ *last_block_in_bio = blkaddr;
+ }
+
+ f2fs_put_dnode(&dn);
+
+ *bio_ret = bio;
+ return 0;
+
+out_put_dnode:
+ f2fs_put_dnode(&dn);
+out:
+ f2fs_decompress_end_io(cc->rpages, cc->cluster_size, true, false);
+ *bio_ret = bio;
+ return ret;
+}
+#endif
+
/*
* This function was originally taken from fs/mpage.c, and customized for f2fs.
* Major change was from block_size == page_size in f2fs by default.
* use ->readpage() or do the necessary surgery to decouple ->readpages()
* from read-ahead.
*/
-static int f2fs_mpage_readpages(struct address_space *mapping,
+int f2fs_mpage_readpages(struct address_space *mapping,
struct list_head *pages, struct page *page,
unsigned nr_pages, bool is_readahead)
{
sector_t last_block_in_bio = 0;
struct inode *inode = mapping->host;
struct f2fs_map_blocks map;
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ struct compress_ctx cc = {
+ .inode = inode,
+ .log_cluster_size = F2FS_I(inode)->i_log_cluster_size,
+ .cluster_size = F2FS_I(inode)->i_cluster_size,
+ .cluster_idx = NULL_CLUSTER,
+ .rpages = NULL,
+ .cpages = NULL,
+ .nr_rpages = 0,
+ .nr_cpages = 0,
+ };
+#endif
+ unsigned max_nr_pages = nr_pages;
int ret = 0;
map.m_pblk = 0;
goto next_page;
}
- ret = f2fs_read_single_page(inode, page, nr_pages, &map, &bio,
- &last_block_in_bio, is_readahead);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_compressed_file(inode)) {
+ /* there are remained comressed pages, submit them */
+ if (!f2fs_cluster_can_merge_page(&cc, page->index)) {
+ ret = f2fs_read_multi_pages(&cc, &bio,
+ max_nr_pages,
+ &last_block_in_bio,
+ is_readahead);
+ f2fs_destroy_compress_ctx(&cc);
+ if (ret)
+ goto set_error_page;
+ }
+ ret = f2fs_is_compressed_cluster(inode, page->index);
+ if (ret < 0)
+ goto set_error_page;
+ else if (!ret)
+ goto read_single_page;
+
+ ret = f2fs_init_compress_ctx(&cc);
+ if (ret)
+ goto set_error_page;
+
+ f2fs_compress_ctx_add_page(&cc, page);
+
+ goto next_page;
+ }
+read_single_page:
+#endif
+
+ ret = f2fs_read_single_page(inode, page, max_nr_pages, &map,
+ &bio, &last_block_in_bio, is_readahead);
if (ret) {
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+set_error_page:
+#endif
SetPageError(page);
zero_user_segment(page, 0, PAGE_SIZE);
unlock_page(page);
next_page:
if (pages)
put_page(page);
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_compressed_file(inode)) {
+ /* last page */
+ if (nr_pages == 1 && !f2fs_cluster_is_empty(&cc)) {
+ ret = f2fs_read_multi_pages(&cc, &bio,
+ max_nr_pages,
+ &last_block_in_bio,
+ is_readahead);
+ f2fs_destroy_compress_ctx(&cc);
+ }
+ }
+#endif
}
BUG_ON(pages && !list_empty(pages));
if (bio)
trace_f2fs_readpage(page, DATA);
+ if (!f2fs_is_compress_backend_ready(inode)) {
+ unlock_page(page);
+ return -EOPNOTSUPP;
+ }
+
/* If the file has inline data, try to read it directly */
if (f2fs_has_inline_data(inode))
ret = f2fs_read_inline_data(inode, page);
trace_f2fs_readpages(inode, page, nr_pages);
+ if (!f2fs_is_compress_backend_ready(inode))
+ return 0;
+
/* If the file has inline data, skip readpages */
if (f2fs_has_inline_data(inode))
return 0;
return f2fs_mpage_readpages(mapping, pages, NULL, nr_pages, true);
}
-static int encrypt_one_page(struct f2fs_io_info *fio)
+int f2fs_encrypt_one_page(struct f2fs_io_info *fio)
{
struct inode *inode = fio->page->mapping->host;
- struct page *mpage;
+ struct page *mpage, *page;
gfp_t gfp_flags = GFP_NOFS;
if (!f2fs_encrypted_file(inode))
return 0;
+ page = fio->compressed_page ? fio->compressed_page : fio->page;
+
/* wait for GCed page writeback via META_MAPPING */
f2fs_wait_on_block_writeback(inode, fio->old_blkaddr);
retry_encrypt:
- fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(fio->page,
- PAGE_SIZE, 0,
- gfp_flags);
+ fio->encrypted_page = fscrypt_encrypt_pagecache_blocks(page,
+ PAGE_SIZE, 0, gfp_flags);
if (IS_ERR(fio->encrypted_page)) {
/* flush pending IOs and wait for a while in the ENOMEM case */
if (PTR_ERR(fio->encrypted_page) == -ENOMEM) {
if (ipu_force ||
(__is_valid_data_blkaddr(fio->old_blkaddr) &&
need_inplace_update(fio))) {
- err = encrypt_one_page(fio);
+ err = f2fs_encrypt_one_page(fio);
if (err)
goto out_writepage;
fio->version = ni.version;
- err = encrypt_one_page(fio);
+ err = f2fs_encrypt_one_page(fio);
if (err)
goto out_writepage;
set_page_writeback(page);
ClearPageError(page);
+ if (fio->compr_blocks && fio->old_blkaddr == COMPRESS_ADDR)
+ f2fs_i_compr_blocks_update(inode, fio->compr_blocks - 1, false);
+
/* LFS mode write path */
f2fs_outplace_write_data(&dn, fio);
trace_f2fs_do_write_data_page(page, OPU);
return err;
}
-static int __write_data_page(struct page *page, bool *submitted,
+int f2fs_write_single_data_page(struct page *page, int *submitted,
struct bio **bio,
sector_t *last_block,
struct writeback_control *wbc,
- enum iostat_type io_type)
+ enum iostat_type io_type,
+ int compr_blocks)
{
struct inode *inode = page->mapping->host;
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
loff_t i_size = i_size_read(inode);
- const pgoff_t end_index = ((unsigned long long) i_size)
+ const pgoff_t end_index = ((unsigned long long)i_size)
>> PAGE_SHIFT;
loff_t psize = (loff_t)(page->index + 1) << PAGE_SHIFT;
unsigned offset = 0;
.page = page,
.encrypted_page = NULL,
.submitted = false,
+ .compr_blocks = compr_blocks,
.need_lock = LOCK_RETRY,
.io_type = io_type,
.io_wbc = wbc,
if (unlikely(is_sbi_flag_set(sbi, SBI_POR_DOING)))
goto redirty_out;
- if (page->index < end_index || f2fs_verity_in_progress(inode))
+ if (page->index < end_index ||
+ f2fs_verity_in_progress(inode) ||
+ compr_blocks)
goto write;
/*
f2fs_remove_dirty_inode(inode);
submitted = NULL;
}
-
unlock_page(page);
if (!S_ISDIR(inode->i_mode) && !IS_NOQUOTA(inode) &&
!F2FS_I(inode)->cp_task)
}
if (submitted)
- *submitted = fio.submitted;
+ *submitted = fio.submitted ? 1 : 0;
return 0;
static int f2fs_write_data_page(struct page *page,
struct writeback_control *wbc)
{
- return __write_data_page(page, NULL, NULL, NULL, wbc, FS_DATA_IO);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ struct inode *inode = page->mapping->host;
+
+ if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
+ goto out;
+
+ if (f2fs_compressed_file(inode)) {
+ if (f2fs_is_compressed_cluster(inode, page->index)) {
+ redirty_page_for_writepage(wbc, page);
+ return AOP_WRITEPAGE_ACTIVATE;
+ }
+ }
+out:
+#endif
+
+ return f2fs_write_single_data_page(page, NULL, NULL, NULL,
+ wbc, FS_DATA_IO, 0);
}
/*
enum iostat_type io_type)
{
int ret = 0;
- int done = 0;
+ int done = 0, retry = 0;
struct pagevec pvec;
struct f2fs_sb_info *sbi = F2FS_M_SB(mapping);
struct bio *bio = NULL;
sector_t last_block;
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ struct inode *inode = mapping->host;
+ struct compress_ctx cc = {
+ .inode = inode,
+ .log_cluster_size = F2FS_I(inode)->i_log_cluster_size,
+ .cluster_size = F2FS_I(inode)->i_cluster_size,
+ .cluster_idx = NULL_CLUSTER,
+ .rpages = NULL,
+ .nr_rpages = 0,
+ .cpages = NULL,
+ .rbuf = NULL,
+ .cbuf = NULL,
+ .rlen = PAGE_SIZE * F2FS_I(inode)->i_cluster_size,
+ .private = NULL,
+ };
+#endif
int nr_pages;
pgoff_t uninitialized_var(writeback_index);
pgoff_t index;
int range_whole = 0;
xa_mark_t tag;
int nwritten = 0;
+ int submitted = 0;
+ int i;
pagevec_init(&pvec);
else
tag = PAGECACHE_TAG_DIRTY;
retry:
+ retry = 0;
if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages)
tag_pages_for_writeback(mapping, index, end);
done_index = index;
- while (!done && (index <= end)) {
- int i;
-
+ while (!done && !retry && (index <= end)) {
nr_pages = pagevec_lookup_range_tag(&pvec, mapping, &index, end,
tag);
if (nr_pages == 0)
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
- bool submitted = false;
+ bool need_readd;
+readd:
+ need_readd = false;
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_compressed_file(inode)) {
+ ret = f2fs_init_compress_ctx(&cc);
+ if (ret) {
+ done = 1;
+ break;
+ }
+
+ if (!f2fs_cluster_can_merge_page(&cc,
+ page->index)) {
+ ret = f2fs_write_multi_pages(&cc,
+ &submitted, wbc, io_type);
+ if (!ret)
+ need_readd = true;
+ goto result;
+ }
+ if (unlikely(f2fs_cp_error(sbi)))
+ goto lock_page;
+
+ if (f2fs_cluster_is_empty(&cc)) {
+ void *fsdata = NULL;
+ struct page *pagep;
+ int ret2;
+
+ ret2 = f2fs_prepare_compress_overwrite(
+ inode, &pagep,
+ page->index, &fsdata);
+ if (ret2 < 0) {
+ ret = ret2;
+ done = 1;
+ break;
+ } else if (ret2 &&
+ !f2fs_compress_write_end(inode,
+ fsdata, page->index,
+ 1)) {
+ retry = 1;
+ break;
+ }
+ } else {
+ goto lock_page;
+ }
+ }
+#endif
/* give a priority to WB_SYNC threads */
if (atomic_read(&sbi->wb_sync_req[DATA]) &&
wbc->sync_mode == WB_SYNC_NONE) {
done = 1;
break;
}
-
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+lock_page:
+#endif
done_index = page->index;
retry_write:
lock_page(page);
if (!clear_page_dirty_for_io(page))
goto continue_unlock;
- ret = __write_data_page(page, &submitted, &bio,
- &last_block, wbc, io_type);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_compressed_file(inode)) {
+ get_page(page);
+ f2fs_compress_ctx_add_page(&cc, page);
+ continue;
+ }
+#endif
+ ret = f2fs_write_single_data_page(page, &submitted,
+ &bio, &last_block, wbc, io_type, 0);
+ if (ret == AOP_WRITEPAGE_ACTIVATE)
+ unlock_page(page);
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+result:
+#endif
+ nwritten += submitted;
+ wbc->nr_to_write -= submitted;
+
if (unlikely(ret)) {
/*
* keep nr_to_write, since vfs uses this to
* get # of written pages.
*/
if (ret == AOP_WRITEPAGE_ACTIVATE) {
- unlock_page(page);
ret = 0;
- continue;
+ goto next;
} else if (ret == -EAGAIN) {
ret = 0;
if (wbc->sync_mode == WB_SYNC_ALL) {
cond_resched();
congestion_wait(BLK_RW_ASYNC,
- HZ/50);
+ HZ/50);
goto retry_write;
}
- continue;
+ goto next;
}
done_index = page->index + 1;
done = 1;
break;
- } else if (submitted) {
- nwritten++;
}
- if (--wbc->nr_to_write <= 0 &&
+ if (wbc->nr_to_write <= 0 &&
wbc->sync_mode == WB_SYNC_NONE) {
done = 1;
break;
}
+next:
+ if (need_readd)
+ goto readd;
}
pagevec_release(&pvec);
cond_resched();
}
-
- if (!cycled && !done) {
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ /* flush remained pages in compress cluster */
+ if (f2fs_compressed_file(inode) && !f2fs_cluster_is_empty(&cc)) {
+ ret = f2fs_write_multi_pages(&cc, &submitted, wbc, io_type);
+ nwritten += submitted;
+ wbc->nr_to_write -= submitted;
+ if (ret) {
+ done = 1;
+ retry = 0;
+ }
+ }
+#endif
+ if ((!cycled && !done) || retry) {
cycled = 1;
index = 0;
end = writeback_index - 1;
{
if (!S_ISREG(inode->i_mode))
return false;
+ if (f2fs_compressed_file(inode))
+ return true;
if (IS_NOQUOTA(inode))
return false;
/* to avoid deadlock in path of data flush */
struct inode *inode = mapping->host;
loff_t i_size = i_size_read(inode);
+ if (IS_NOQUOTA(inode))
+ return;
+
/* In the fs-verity case, f2fs_end_enable_verity() does the truncate */
if (to > i_size && !f2fs_verity_in_progress(inode)) {
down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
down_write(&F2FS_I(inode)->i_mmap_sem);
truncate_pagecache(inode, i_size);
- if (!IS_NOQUOTA(inode))
- f2fs_truncate_blocks(inode, i_size, true);
+ f2fs_truncate_blocks(inode, i_size, true);
up_write(&F2FS_I(inode)->i_mmap_sem);
up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
__do_map_lock(sbi, flag, true);
locked = true;
}
+
restart:
/* check inline_data */
ipage = f2fs_get_node_page(sbi, inode->i_ino);
if (err)
goto fail;
}
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ if (f2fs_compressed_file(inode)) {
+ int ret;
+
+ *fsdata = NULL;
+
+ ret = f2fs_prepare_compress_overwrite(inode, pagep,
+ index, fsdata);
+ if (ret < 0) {
+ err = ret;
+ goto fail;
+ } else if (ret) {
+ return 0;
+ }
+ }
+#endif
+
repeat:
/*
* Do not use grab_cache_page_write_begin() to avoid deadlock due to
goto fail;
}
+ /* TODO: cluster can be compressed due to race with .writepage */
+
*pagep = page;
err = prepare_write_begin(sbi, page, pos, len,
else
SetPageUptodate(page);
}
+
+#ifdef CONFIG_F2FS_FS_COMPRESSION
+ /* overwrite compressed file */
+ if (f2fs_compressed_file(inode) && fsdata) {
+ f2fs_compress_write_end(inode, fsdata, page->index, copied);
+ f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
+ return copied;
+ }
+#endif
+
if (!copied)
goto unlock_out;
#ifdef CONFIG_SWAP
/* Copied from generic_swapfile_activate() to check any holes */
-static int check_swap_activate(struct file *swap_file, unsigned int max)
+static int check_swap_activate(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;
sector_t last_block;
sector_t lowest_block = -1;
sector_t highest_block = 0;
+ int nr_extents = 0;
+ int ret;
blkbits = inode->i_blkbits;
blocks_per_page = PAGE_SIZE >> blkbits;
probe_block = 0;
page_no = 0;
last_block = i_size_read(inode) >> blkbits;
- while ((probe_block + blocks_per_page) <= last_block && page_no < max) {
+ while ((probe_block + blocks_per_page) <= last_block &&
+ page_no < sis->max) {
unsigned block_in_page;
sector_t first_block;
highest_block = first_block;
}
+ /*
+ * We found a PAGE_SIZE-length, PAGE_SIZE-aligned run of blocks
+ */
+ ret = add_swap_extent(sis, page_no, 1, first_block);
+ if (ret < 0)
+ goto out;
+ nr_extents += ret;
page_no++;
probe_block += blocks_per_page;
reprobe:
continue;
}
- return 0;
-
+ ret = nr_extents;
+ *span = 1 + highest_block - lowest_block;
+ if (page_no == 0)
+ page_no = 1; /* force Empty message */
+ sis->max = page_no;
+ sis->pages = page_no - 1;
+ sis->highest_bit = page_no - 1;
+out:
+ return ret;
bad_bmap:
pr_err("swapon: swapfile has holes\n");
return -EINVAL;
if (ret)
return ret;
- ret = check_swap_activate(file, sis->max);
- if (ret)
+ if (f2fs_disable_compressed_file(inode))
+ return -EINVAL;
+
+ ret = check_swap_activate(sis, file, span);
+ if (ret < 0)
return ret;
set_inode_flag(inode, FI_PIN_FILE);
f2fs_precache_extents(inode);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
- return 0;
+ return ret;
}
static void f2fs_swap_deactivate(struct file *file)
kmem_cache_destroy(bio_post_read_ctx_cache);
}
+int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi)
+{
+ if (!f2fs_sb_has_encrypt(sbi) &&
+ !f2fs_sb_has_verity(sbi) &&
+ !f2fs_sb_has_compression(sbi))
+ return 0;
+
+ sbi->post_read_wq = alloc_workqueue("f2fs_post_read_wq",
+ WQ_UNBOUND | WQ_HIGHPRI,
+ num_online_cpus());
+ if (!sbi->post_read_wq)
+ return -ENOMEM;
+ return 0;
+}
+
+void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi)
+{
+ if (sbi->post_read_wq)
+ destroy_workqueue(sbi->post_read_wq);
+}
+
int __init f2fs_init_bio_entry_cache(void)
{
bio_entry_slab = f2fs_kmem_cache_create("bio_entry_slab",
return 0;
}
-void __exit f2fs_destroy_bio_entry_cache(void)
+void f2fs_destroy_bio_entry_cache(void)
{
kmem_cache_destroy(bio_entry_slab);
}
projects / linux.git / blobdiff