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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

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Pull btrfs updates from Chris Mason:
 "This pull is mostly cleanups and fixes:

   - The raid5/6 cleanups from Zhao Lei fixup some long standing warts
     in the code and add improvements on top of the scrubbing support
     from 3.19.

   - Josef has round one of our ENOSPC fixes coming from large btrfs
     clusters here at FB.

   - Dave Sterba continues a long series of cleanups (thanks Dave), and
     Filipe continues hammering on corner cases in fsync and others

  This all was held up a little trying to track down a use-after-free in
  btrfs raid5/6.  It's not clear yet if this is just made easier to
  trigger with this pull or if its a new bug from the raid5/6 cleanups.
  Dave Sterba is the only one to trigger it so far, but he has a
  consistent way to reproduce, so we'll get it nailed shortly"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (68 commits)
  Btrfs: don't remove extents and xattrs when logging new names
  Btrfs: fix fsync data loss after adding hard link to inode
  Btrfs: fix BUG_ON in btrfs_orphan_add() when delete unused block group
  Btrfs: account for large extents with enospc
  Btrfs: don't set and clear delalloc for O_DIRECT writes
  Btrfs: only adjust outstanding_extents when we do a short write
  btrfs: Fix out-of-space bug
  Btrfs: scrub, fix sleep in atomic context
  Btrfs: fix scheduler warning when syncing log
  Btrfs: Remove unnecessary placeholder in btrfs_err_code
  btrfs: cleanup init for list in free-space-cache
  btrfs: delete chunk allocation attemp when setting block group ro
  btrfs: clear bio reference after submit_one_bio()
  Btrfs: fix scrub race leading to use-after-free
  Btrfs: add missing cleanup on sysfs init failure
  Btrfs: fix race between transaction commit and empty block group removal
  btrfs: add more checks to btrfs_read_sys_array
  btrfs: cleanup, rename a few variables in btrfs_read_sys_array
  btrfs: add checks for sys_chunk_array sizes
  btrfs: more superblock checks, lower bounds on devices and sectorsize/nodesize
  ...
This commit is contained in:
Linus Torvalds
2015-02-19 14:36:00 -08:00
parent 4533f6e27a a742994aa2
commit 2b9fb532d4
34 changed files with 1065 additions and 863 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
fs/btrfs/extent_io.c
View File

@@ -64,7 +64,7 @@ void btrfs_leak_debug_check(void)
while (!list_empty(&states)) {
state = list_entry(states.next, struct extent_state, leak_list);
pr_err("BTRFS: state leak: start %llu end %llu state %lu in tree %d refs %d\n",
pr_err("BTRFS: state leak: start %llu end %llu state %u in tree %d refs %d\n",
state->start, state->end, state->state,
extent_state_in_tree(state),
atomic_read(&state->refs));
@@ -396,21 +396,21 @@ static void merge_state(struct extent_io_tree *tree,
}
static void set_state_cb(struct extent_io_tree *tree,
struct extent_state *state, unsigned long *bits)
struct extent_state *state, unsigned *bits)
{
if (tree->ops && tree->ops->set_bit_hook)
tree->ops->set_bit_hook(tree->mapping->host, state, bits);
}
static void clear_state_cb(struct extent_io_tree *tree,
struct extent_state *state, unsigned long *bits)
struct extent_state *state, unsigned *bits)
{
if (tree->ops && tree->ops->clear_bit_hook)
tree->ops->clear_bit_hook(tree->mapping->host, state, bits);
}
static void set_state_bits(struct extent_io_tree *tree,
struct extent_state *state, unsigned long *bits);
struct extent_state *state, unsigned *bits);
/*
* insert an extent_state struct into the tree. 'bits' are set on the
@@ -426,7 +426,7 @@ static int insert_state(struct extent_io_tree *tree,
struct extent_state *state, u64 start, u64 end,
struct rb_node ***p,
struct rb_node **parent,
unsigned long *bits)
unsigned *bits)
{
struct rb_node *node;
@@ -511,10 +511,10 @@ static struct extent_state *next_state(struct extent_state *state)
*/
static struct extent_state *clear_state_bit(struct extent_io_tree *tree,
struct extent_state *state,
unsigned long *bits, int wake)
unsigned *bits, int wake)
{
struct extent_state *next;
unsigned long bits_to_clear = *bits & ~EXTENT_CTLBITS;
unsigned bits_to_clear = *bits & ~EXTENT_CTLBITS;
if ((bits_to_clear & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) {
u64 range = state->end - state->start + 1;
@@ -570,7 +570,7 @@ static void extent_io_tree_panic(struct extent_io_tree *tree, int err)
* This takes the tree lock, and returns 0 on success and < 0 on error.
*/
int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, int wake, int delete,
unsigned bits, int wake, int delete,
struct extent_state **cached_state,
gfp_t mask)
{
@@ -789,9 +789,9 @@ out:
static void set_state_bits(struct extent_io_tree *tree,
struct extent_state *state,
unsigned long *bits)
unsigned *bits)
{
unsigned long bits_to_set = *bits & ~EXTENT_CTLBITS;
unsigned bits_to_set = *bits & ~EXTENT_CTLBITS;
set_state_cb(tree, state, bits);
if ((bits_to_set & EXTENT_DIRTY) && !(state->state & EXTENT_DIRTY)) {
@@ -803,7 +803,7 @@ static void set_state_bits(struct extent_io_tree *tree,
static void cache_state_if_flags(struct extent_state *state,
struct extent_state **cached_ptr,
const u64 flags)
unsigned flags)
{
if (cached_ptr && !(*cached_ptr)) {
if (!flags || (state->state & flags)) {
@@ -833,7 +833,7 @@ static void cache_state(struct extent_state *state,
static int __must_check
__set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, unsigned long exclusive_bits,
unsigned bits, unsigned exclusive_bits,
u64 *failed_start, struct extent_state **cached_state,
gfp_t mask)
{
@@ -1034,7 +1034,7 @@ search_again:
}
int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, u64 * failed_start,
unsigned bits, u64 * failed_start,
struct extent_state **cached_state, gfp_t mask)
{
return __set_extent_bit(tree, start, end, bits, 0, failed_start,
@@ -1060,7 +1060,7 @@ int set_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
* boundary bits like LOCK.
*/
int convert_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, unsigned long clear_bits,
unsigned bits, unsigned clear_bits,
struct extent_state **cached_state, gfp_t mask)
{
struct extent_state *state;
@@ -1268,14 +1268,14 @@ int set_extent_dirty(struct extent_io_tree *tree, u64 start, u64 end,
}
int set_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, gfp_t mask)
unsigned bits, gfp_t mask)
{
return set_extent_bit(tree, start, end, bits, NULL,
NULL, mask);
}
int clear_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, gfp_t mask)
unsigned bits, gfp_t mask)
{
return clear_extent_bit(tree, start, end, bits, 0, 0, NULL, mask);
}
@@ -1330,10 +1330,11 @@ int clear_extent_uptodate(struct extent_io_tree *tree, u64 start, u64 end,
* us if waiting is desired.
*/
int lock_extent_bits(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, struct extent_state **cached_state)
unsigned bits, struct extent_state **cached_state)
{
int err;
u64 failed_start;
while (1) {
err = __set_extent_bit(tree, start, end, EXTENT_LOCKED | bits,
EXTENT_LOCKED, &failed_start,
@@ -1440,7 +1441,7 @@ static int set_range_writeback(struct extent_io_tree *tree, u64 start, u64 end)
*/
static struct extent_state *
find_first_extent_bit_state(struct extent_io_tree *tree,
u64 start, unsigned long bits)
u64 start, unsigned bits)
{
struct rb_node *node;
struct extent_state *state;
@@ -1474,7 +1475,7 @@ out:
* If nothing was found, 1 is returned. If found something, return 0.
*/
int find_first_extent_bit(struct extent_io_tree *tree, u64 start,
u64 *start_ret, u64 *end_ret, unsigned long bits,
u64 *start_ret, u64 *end_ret, unsigned bits,
struct extent_state **cached_state)
{
struct extent_state *state;
@@ -1753,7 +1754,7 @@ out_failed:
int extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end,
struct page *locked_page,
unsigned long clear_bits,
unsigned clear_bits,
unsigned long page_ops)
{
struct extent_io_tree *tree = &BTRFS_I(inode)->io_tree;
@@ -1810,7 +1811,7 @@ int extent_clear_unlock_delalloc(struct inode *inode, u64 start, u64 end,
*/
u64 count_range_bits(struct extent_io_tree *tree,
u64 *start, u64 search_end, u64 max_bytes,
unsigned long bits, int contig)
unsigned bits, int contig)
{
struct rb_node *node;
struct extent_state *state;
@@ -1928,7 +1929,7 @@ out:
* range is found set.
*/
int test_range_bit(struct extent_io_tree *tree, u64 start, u64 end,
unsigned long bits, int filled, struct extent_state *cached)
unsigned bits, int filled, struct extent_state *cached)
{
struct extent_state *state = NULL;
struct rb_node *node;
@@ -2057,7 +2058,7 @@ int repair_io_failure(struct inode *inode, u64 start, u64 length, u64 logical,
sector = bbio->stripes[mirror_num-1].physical >> 9;
bio->bi_iter.bi_sector = sector;
dev = bbio->stripes[mirror_num-1].dev;
kfree(bbio);
btrfs_put_bbio(bbio);
if (!dev || !dev->bdev || !dev->writeable) {
bio_put(bio);
return -EIO;
@@ -2816,8 +2817,10 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
bio_add_page(bio, page, page_size, offset) < page_size) {
ret = submit_one_bio(rw, bio, mirror_num,
prev_bio_flags);
if (ret < 0)
if (ret < 0) {
*bio_ret = NULL;
return ret;
}
bio = NULL;
} else {
return 0;
@@ -3239,7 +3242,7 @@ static noinline_for_stack int writepage_delalloc(struct inode *inode,
page,
&delalloc_start,
&delalloc_end,
128 * 1024 * 1024);
BTRFS_MAX_EXTENT_SIZE);
if (nr_delalloc == 0) {
delalloc_start = delalloc_end + 1;
continue;
@@ -4598,11 +4601,11 @@ static inline void btrfs_release_extent_buffer(struct extent_buffer *eb)
static struct extent_buffer *
__alloc_extent_buffer(struct btrfs_fs_info *fs_info, u64 start,
unsigned long len, gfp_t mask)
unsigned long len)
{
struct extent_buffer *eb = NULL;
eb = kmem_cache_zalloc(extent_buffer_cache, mask);
eb = kmem_cache_zalloc(extent_buffer_cache, GFP_NOFS);
if (eb == NULL)
return NULL;
eb->start = start;
@@ -4643,7 +4646,7 @@ struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src)
struct extent_buffer *new;
unsigned long num_pages = num_extent_pages(src->start, src->len);
new = __alloc_extent_buffer(NULL, src->start, src->len, GFP_NOFS);
new = __alloc_extent_buffer(src->fs_info, src->start, src->len);
if (new == NULL)
return NULL;
@@ -4666,13 +4669,26 @@ struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src)
return new;
}
struct extent_buffer *alloc_dummy_extent_buffer(u64 start, unsigned long len)
struct extent_buffer *alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start)
{
struct extent_buffer *eb;
unsigned long num_pages = num_extent_pages(0, len);
unsigned long len;
unsigned long num_pages;
unsigned long i;
eb = __alloc_extent_buffer(NULL, start, len, GFP_NOFS);
if (!fs_info) {
/*
* Called only from tests that don't always have a fs_info
* available, but we know that nodesize is 4096
*/
len = 4096;
} else {
len = fs_info->tree_root->nodesize;
}
num_pages = num_extent_pages(0, len);
eb = __alloc_extent_buffer(fs_info, start, len);
if (!eb)
return NULL;
@@ -4762,7 +4778,7 @@ struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info,
#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start, unsigned long len)
u64 start)
{
struct extent_buffer *eb, *exists = NULL;
int ret;
@@ -4770,7 +4786,7 @@ struct extent_buffer *alloc_test_extent_buffer(struct btrfs_fs_info *fs_info,
eb = find_extent_buffer(fs_info, start);
if (eb)
return eb;
eb = alloc_dummy_extent_buffer(start, len);
eb = alloc_dummy_extent_buffer(fs_info, start);
if (!eb)
return NULL;
eb->fs_info = fs_info;
@@ -4808,8 +4824,9 @@ free_eb:
#endif
struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
u64 start, unsigned long len)
u64 start)
{
unsigned long len = fs_info->tree_root->nodesize;
unsigned long num_pages = num_extent_pages(start, len);
unsigned long i;
unsigned long index = start >> PAGE_CACHE_SHIFT;
@@ -4824,7 +4841,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info,
if (eb)
return eb;
eb = __alloc_extent_buffer(fs_info, start, len, GFP_NOFS);
eb = __alloc_extent_buffer(fs_info, start, len);
if (!eb)
return NULL;