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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Browse Source 
Pull ext4 updates from Ted Ts'o:
 "The major change this cycle is deleting ext4's copy of the file system
  encryption code and switching things over to using the copies in
  fs/crypto.  I've updated the MAINTAINERS file to add an entry for
  fs/crypto listing Jaeguk Kim and myself as the maintainers.

  There are also a number of bug fixes, most notably for some problems
  found by American Fuzzy Lop (AFL) courtesy of Vegard Nossum.  Also
  fixed is a writeback deadlock detected by generic/130, and some
  potential races in the metadata checksum code"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
  ext4: verify extent header depth
  ext4: short-cut orphan cleanup on error
  ext4: fix reference counting bug on block allocation error
  MAINTAINRES: fs-crypto maintainers update
  ext4 crypto: migrate into vfs's crypto engine
  ext2: fix filesystem deadlock while reading corrupted xattr block
  ext4: fix project quota accounting without quota limits enabled
  ext4: validate s_reserved_gdt_blocks on mount
  ext4: remove unused page_idx
  ext4: don't call ext4_should_journal_data() on the journal inode
  ext4: Fix WARN_ON_ONCE in ext4_commit_super()
  ext4: fix deadlock during page writeback
  ext4: correct error value of function verifying dx checksum
  ext4: avoid modifying checksum fields directly during checksum verification
  ext4: check for extents that wrap around
  jbd2: make journal y2038 safe
  jbd2: track more dependencies on transaction commit
  jbd2: move lockdep tracking to journal_s
  jbd2: move lockdep instrumentation for jbd2 handles
  ext4: respect the nobarrier mount option in nojournal mode
  ...
This commit is contained in:
Linus Torvalds
2016-07-26 18:35:55 -07:00
parent 59ebc44e8d 7bc9491645
commit 396d10993f
34 changed files with 544 additions and 2109 deletions
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48
fs/ext4/readpage.c
View File

@@ -46,37 +46,6 @@
#include "ext4.h"
/*
* Call ext4_decrypt on every single page, reusing the encryption
* context.
*/
static void completion_pages(struct work_struct *work)
{
#ifdef CONFIG_EXT4_FS_ENCRYPTION
struct ext4_crypto_ctx *ctx =
container_of(work, struct ext4_crypto_ctx, r.work);
struct bio *bio = ctx->r.bio;
struct bio_vec *bv;
int i;
bio_for_each_segment_all(bv, bio, i) {
struct page *page = bv->bv_page;
int ret = ext4_decrypt(page);
if (ret) {
WARN_ON_ONCE(1);
SetPageError(page);
} else
SetPageUptodate(page);
unlock_page(page);
}
ext4_release_crypto_ctx(ctx);
bio_put(bio);
#else
BUG();
#endif
}
static inline bool ext4_bio_encrypted(struct bio *bio)
{
#ifdef CONFIG_EXT4_FS_ENCRYPTION
@@ -104,14 +73,10 @@ static void mpage_end_io(struct bio *bio)
int i;
if (ext4_bio_encrypted(bio)) {
struct ext4_crypto_ctx *ctx = bio->bi_private;
if (bio->bi_error) {
ext4_release_crypto_ctx(ctx);
fscrypt_release_ctx(bio->bi_private);
} else {
INIT_WORK(&ctx->r.work, completion_pages);
ctx->r.bio = bio;
queue_work(ext4_read_workqueue, &ctx->r.work);
fscrypt_decrypt_bio_pages(bio->bi_private, bio);
return;
}
}
@@ -135,7 +100,6 @@ int ext4_mpage_readpages(struct address_space *mapping,
unsigned nr_pages)
{
struct bio *bio = NULL;
unsigned page_idx;
sector_t last_block_in_bio = 0;
struct inode *inode = mapping->host;
@@ -157,7 +121,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
map.m_len = 0;
map.m_flags = 0;
for (page_idx = 0; nr_pages; page_idx++, nr_pages--) {
for (; nr_pages; nr_pages--) {
int fully_mapped = 1;
unsigned first_hole = blocks_per_page;
@@ -275,11 +239,11 @@ int ext4_mpage_readpages(struct address_space *mapping,
bio = NULL;
}
if (bio == NULL) {
struct ext4_crypto_ctx *ctx = NULL;
struct fscrypt_ctx *ctx = NULL;
if (ext4_encrypted_inode(inode) &&
S_ISREG(inode->i_mode)) {
ctx = ext4_get_crypto_ctx(inode, GFP_NOFS);
ctx = fscrypt_get_ctx(inode, GFP_NOFS);
if (IS_ERR(ctx))
goto set_error_page;
}
@@ -287,7 +251,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
min_t(int, nr_pages, BIO_MAX_PAGES));
if (!bio) {
if (ctx)
ext4_release_crypto_ctx(ctx);
fscrypt_release_ctx(ctx);
goto set_error_page;
}
bio->bi_bdev = bdev;