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Merge branch 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Browse Source 
Pull more btrfs updates from Chris Mason:
 "This is part two of my btrfs pull, which is some cleanups and a batch
  of fixes.

  Most of the code here is from Jeff Mahoney, making the pointers we
  pass around internally more consistent and less confusing overall.  I
  noticed a small problem right before I sent this out yesterday, so I
  fixed it up and re-tested overnight"

* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (40 commits)
  Btrfs: fix __MAX_CSUM_ITEMS
  btrfs: btrfs_abort_transaction, drop root parameter
  btrfs: add btrfs_trans_handle->fs_info pointer
  btrfs: btrfs_relocate_chunk pass extent_root to btrfs_end_transaction
  btrfs: convert nodesize macros to static inlines
  btrfs: introduce BTRFS_MAX_ITEM_SIZE
  btrfs: cleanup, remove prototype for btrfs_find_root_ref
  btrfs: copy_to_sk drop unused root parameter
  btrfs: simpilify btrfs_subvol_inherit_props
  btrfs: tests, use BTRFS_FS_STATE_DUMMY_FS_INFO instead of dummy root
  btrfs: tests, require fs_info for root
  btrfs: tests, move initialization into tests/
  btrfs: btrfs_test_opt and friends should take a btrfs_fs_info
  btrfs: prefix fsid to all trace events
  btrfs: plumb fs_info into btrfs_work
  btrfs: remove obsolete part of comment in statfs
  btrfs: hide test-only member under ifdef
  btrfs: Ratelimit "no csum found" info message
  btrfs: Add ratelimit to btrfs printing
  Btrfs: fix unexpected balance crash due to BUG_ON
  ...
This commit is contained in:
Linus Torvalds
2016-08-04 19:56:16 -04:00
parent 3a303258ef 42049bf60d
commit d58b0d980f
45 changed files with 1072 additions and 823 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
fs/btrfs/extent_io.c
View File

@@ -163,13 +163,13 @@ int __init extent_io_init(void)
{
extent_state_cache = kmem_cache_create("btrfs_extent_state",
sizeof(struct extent_state), 0,
SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL);
SLAB_MEM_SPREAD, NULL);
if (!extent_state_cache)
return -ENOMEM;
extent_buffer_cache = kmem_cache_create("btrfs_extent_buffer",
sizeof(struct extent_buffer), 0,
SLAB_RECLAIM_ACCOUNT | SLAB_MEM_SPREAD, NULL);
SLAB_MEM_SPREAD, NULL);
if (!extent_buffer_cache)
goto free_state_cache;
@@ -2756,7 +2756,6 @@ static int merge_bio(struct extent_io_tree *tree, struct page *page,
if (tree->ops && tree->ops->merge_bio_hook)
ret = tree->ops->merge_bio_hook(page, offset, size, bio,
bio_flags);
BUG_ON(ret < 0);
return ret;
}
@@ -2879,6 +2878,7 @@ __get_extent_map(struct inode *inode, struct page *page, size_t pg_offset,
* into the tree that are removed when the IO is done (by the end_io
* handlers)
* XXX JDM: This needs looking at to ensure proper page locking
* return 0 on success, otherwise return error
*/
static int __do_readpage(struct extent_io_tree *tree,
struct page *page,
@@ -2900,7 +2900,7 @@ static int __do_readpage(struct extent_io_tree *tree,
sector_t sector;
struct extent_map *em;
struct block_device *bdev;
int ret;
int ret = 0;
int nr = 0;
size_t pg_offset = 0;
size_t iosize;
@@ -3081,6 +3081,7 @@ static int __do_readpage(struct extent_io_tree *tree,
} else {
SetPageError(page);
unlock_extent(tree, cur, cur + iosize - 1);
goto out;
}
cur = cur + iosize;
pg_offset += iosize;
@@ -3091,7 +3092,7 @@ out:
SetPageUptodate(page);
unlock_page(page);
}
return 0;
return ret;
}
static inline void __do_contiguous_readpages(struct extent_io_tree *tree,
@@ -5230,14 +5231,31 @@ int read_extent_buffer_pages(struct extent_io_tree *tree,
atomic_set(&eb->io_pages, num_reads);
for (i = start_i; i < num_pages; i++) {
page = eb->pages[i];
if (!PageUptodate(page)) {
if (ret) {
atomic_dec(&eb->io_pages);
unlock_page(page);
continue;
}
ClearPageError(page);
err = __extent_read_full_page(tree, page,
get_extent, &bio,
mirror_num, &bio_flags,
REQ_META);
if (err)
if (err) {
ret = err;
/*
* We use &bio in above __extent_read_full_page,
* so we ensure that if it returns error, the
* current page fails to add itself to bio and
* it's been unlocked.
*
* We must dec io_pages by ourselves.
*/
atomic_dec(&eb->io_pages);
}
} else {
unlock_page(page);
}