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authorMatthew Garrett <mjg@redhat.com>2011-03-28 06:47:38 -0400
committerMatthew Garrett <mjg@redhat.com>2011-03-28 06:47:38 -0400
commit72ed73c3f0801e860ee27e53ab6aaf47941ba324 (patch)
treeb46c546d77ee8931d47dafc97bf23b11472bffeb /fs/btrfs
parent883ae7992c09435927dda642b61f1455fceb5b85 (diff)
parentbd1573a5546b4351b5d042f1e4cd631ea67cc6b0 (diff)
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Merge branch 'x86-platform-next' into x86-platform
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/acl.c2
-rw-r--r--fs/btrfs/ctree.h9
-rw-r--r--fs/btrfs/disk-io.c81
-rw-r--r--fs/btrfs/export.c8
-rw-r--r--fs/btrfs/extent-tree.c35
-rw-r--r--fs/btrfs/extent_io.c35
-rw-r--r--fs/btrfs/file.c114
-rw-r--r--fs/btrfs/inode.c23
-rw-r--r--fs/btrfs/ioctl.c4
-rw-r--r--fs/btrfs/volumes.c91
-rw-r--r--fs/btrfs/xattr.c6
-rw-r--r--fs/btrfs/xattr.h3
-rw-r--r--fs/btrfs/zlib.c3
13 files changed, 172 insertions, 242 deletions
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 9c94934..de34bfa 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -170,7 +170,7 @@ static int btrfs_xattr_acl_set(struct dentry *dentry, const char *name,
int ret;
struct posix_acl *acl = NULL;
- if (!is_owner_or_cap(dentry->d_inode))
+ if (!inode_owner_or_capable(dentry->d_inode))
return -EPERM;
if (!IS_POSIXACL(dentry->d_inode))
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6f820fa..7f78cc7 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -729,6 +729,15 @@ struct btrfs_space_info {
u64 disk_total; /* total bytes on disk, takes mirrors into
account */
+ /*
+ * we bump reservation progress every time we decrement
+ * bytes_reserved. This way people waiting for reservations
+ * know something good has happened and they can check
+ * for progress. The number here isn't to be trusted, it
+ * just shows reclaim activity
+ */
+ unsigned long reservation_progress;
+
int full; /* indicates that we cannot allocate any more
chunks for this space */
int force_alloc; /* set if we need to force a chunk alloc for
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e1aa8d6..830d261 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -847,7 +847,6 @@ static const struct address_space_operations btree_aops = {
.writepages = btree_writepages,
.releasepage = btree_releasepage,
.invalidatepage = btree_invalidatepage,
- .sync_page = block_sync_page,
#ifdef CONFIG_MIGRATION
.migratepage = btree_migratepage,
#endif
@@ -1331,82 +1330,6 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits)
}
/*
- * this unplugs every device on the box, and it is only used when page
- * is null
- */
-static void __unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
- struct btrfs_device *device;
- struct btrfs_fs_info *info;
-
- info = (struct btrfs_fs_info *)bdi->unplug_io_data;
- list_for_each_entry(device, &info->fs_devices->devices, dev_list) {
- if (!device->bdev)
- continue;
-
- bdi = blk_get_backing_dev_info(device->bdev);
- if (bdi->unplug_io_fn)
- bdi->unplug_io_fn(bdi, page);
- }
-}
-
-static void btrfs_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
-{
- struct inode *inode;
- struct extent_map_tree *em_tree;
- struct extent_map *em;
- struct address_space *mapping;
- u64 offset;
-
- /* the generic O_DIRECT read code does this */
- if (1 || !page) {
- __unplug_io_fn(bdi, page);
- return;
- }
-
- /*
- * page->mapping may change at any time. Get a consistent copy
- * and use that for everything below
- */
- smp_mb();
- mapping = page->mapping;
- if (!mapping)
- return;
-
- inode = mapping->host;
-
- /*
- * don't do the expensive searching for a small number of
- * devices
- */
- if (BTRFS_I(inode)->root->fs_info->fs_devices->open_devices <= 2) {
- __unplug_io_fn(bdi, page);
- return;
- }
-
- offset = page_offset(page);
-
- em_tree = &BTRFS_I(inode)->extent_tree;
- read_lock(&em_tree->lock);
- em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE);
- read_unlock(&em_tree->lock);
- if (!em) {
- __unplug_io_fn(bdi, page);
- return;
- }
-
- if (em->block_start >= EXTENT_MAP_LAST_BYTE) {
- free_extent_map(em);
- __unplug_io_fn(bdi, page);
- return;
- }
- offset = offset - em->start;
- btrfs_unplug_page(&BTRFS_I(inode)->root->fs_info->mapping_tree,
- em->block_start + offset, page);
- free_extent_map(em);
-}
-
-/*
* If this fails, caller must call bdi_destroy() to get rid of the
* bdi again.
*/
@@ -1420,8 +1343,6 @@ static int setup_bdi(struct btrfs_fs_info *info, struct backing_dev_info *bdi)
return err;
bdi->ra_pages = default_backing_dev_info.ra_pages;
- bdi->unplug_io_fn = btrfs_unplug_io_fn;
- bdi->unplug_io_data = info;
bdi->congested_fn = btrfs_congested_fn;
bdi->congested_data = info;
return 0;
@@ -2493,7 +2414,7 @@ int close_ctree(struct btrfs_root *root)
* ERROR state on disk.
*
* 2. when btrfs flips readonly just in btrfs_commit_super,
- * and in such case, btrfs cannnot write sb via btrfs_commit_super,
+ * and in such case, btrfs cannot write sb via btrfs_commit_super,
* and since fs_state has been set BTRFS_SUPER_FLAG_ERROR flag,
* btrfs will cleanup all FS resources first and write sb then.
*/
diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index ff27d7a..b4ffad8 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -21,9 +21,13 @@ static int btrfs_encode_fh(struct dentry *dentry, u32 *fh, int *max_len,
int len = *max_len;
int type;
- if ((len < BTRFS_FID_SIZE_NON_CONNECTABLE) ||
- (connectable && len < BTRFS_FID_SIZE_CONNECTABLE))
+ if (connectable && (len < BTRFS_FID_SIZE_CONNECTABLE)) {
+ *max_len = BTRFS_FID_SIZE_CONNECTABLE;
return 255;
+ } else if (len < BTRFS_FID_SIZE_NON_CONNECTABLE) {
+ *max_len = BTRFS_FID_SIZE_NON_CONNECTABLE;
+ return 255;
+ }
len = BTRFS_FID_SIZE_NON_CONNECTABLE;
type = FILEID_BTRFS_WITHOUT_PARENT;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 588ff98..7b3089b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3342,15 +3342,16 @@ static int shrink_delalloc(struct btrfs_trans_handle *trans,
u64 max_reclaim;
u64 reclaimed = 0;
long time_left;
- int pause = 1;
int nr_pages = (2 * 1024 * 1024) >> PAGE_CACHE_SHIFT;
int loops = 0;
+ unsigned long progress;
block_rsv = &root->fs_info->delalloc_block_rsv;
space_info = block_rsv->space_info;
smp_mb();
reserved = space_info->bytes_reserved;
+ progress = space_info->reservation_progress;
if (reserved == 0)
return 0;
@@ -3365,31 +3366,36 @@ static int shrink_delalloc(struct btrfs_trans_handle *trans,
writeback_inodes_sb_nr_if_idle(root->fs_info->sb, nr_pages);
spin_lock(&space_info->lock);
- if (reserved > space_info->bytes_reserved) {
- loops = 0;
+ if (reserved > space_info->bytes_reserved)
reclaimed += reserved - space_info->bytes_reserved;
- } else {
- loops++;
- }
reserved = space_info->bytes_reserved;
spin_unlock(&space_info->lock);
+ loops++;
+
if (reserved == 0 || reclaimed >= max_reclaim)
break;
if (trans && trans->transaction->blocked)
return -EAGAIN;
- __set_current_state(TASK_INTERRUPTIBLE);
- time_left = schedule_timeout(pause);
+ time_left = schedule_timeout_interruptible(1);
/* We were interrupted, exit */
if (time_left)
break;
- pause <<= 1;
- if (pause > HZ / 10)
- pause = HZ / 10;
+ /* we've kicked the IO a few times, if anything has been freed,
+ * exit. There is no sense in looping here for a long time
+ * when we really need to commit the transaction, or there are
+ * just too many writers without enough free space
+ */
+
+ if (loops > 3) {
+ smp_mb();
+ if (progress != space_info->reservation_progress)
+ break;
+ }
}
return reclaimed >= to_reclaim;
@@ -3612,6 +3618,7 @@ void block_rsv_release_bytes(struct btrfs_block_rsv *block_rsv,
if (num_bytes) {
spin_lock(&space_info->lock);
space_info->bytes_reserved -= num_bytes;
+ space_info->reservation_progress++;
spin_unlock(&space_info->lock);
}
}
@@ -3844,6 +3851,7 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
if (block_rsv->reserved >= block_rsv->size) {
num_bytes = block_rsv->reserved - block_rsv->size;
sinfo->bytes_reserved -= num_bytes;
+ sinfo->reservation_progress++;
block_rsv->reserved = block_rsv->size;
block_rsv->full = 1;
}
@@ -4005,7 +4013,6 @@ int btrfs_delalloc_reserve_metadata(struct inode *inode, u64 num_bytes)
to_reserve = 0;
}
spin_unlock(&BTRFS_I(inode)->accounting_lock);
-
to_reserve += calc_csum_metadata_size(inode, num_bytes);
ret = reserve_metadata_bytes(NULL, root, block_rsv, to_reserve, 1);
if (ret)
@@ -4133,6 +4140,7 @@ static int update_block_group(struct btrfs_trans_handle *trans,
btrfs_set_block_group_used(&cache->item, old_val);
cache->reserved -= num_bytes;
cache->space_info->bytes_reserved -= num_bytes;
+ cache->space_info->reservation_progress++;
cache->space_info->bytes_used += num_bytes;
cache->space_info->disk_used += num_bytes * factor;
spin_unlock(&cache->lock);
@@ -4184,6 +4192,7 @@ static int pin_down_extent(struct btrfs_root *root,
if (reserved) {
cache->reserved -= num_bytes;
cache->space_info->bytes_reserved -= num_bytes;
+ cache->space_info->reservation_progress++;
}
spin_unlock(&cache->lock);
spin_unlock(&cache->space_info->lock);
@@ -4234,6 +4243,7 @@ static int update_reserved_bytes(struct btrfs_block_group_cache *cache,
space_info->bytes_readonly += num_bytes;
cache->reserved -= num_bytes;
space_info->bytes_reserved -= num_bytes;
+ space_info->reservation_progress++;
}
spin_unlock(&cache->lock);
spin_unlock(&space_info->lock);
@@ -4712,6 +4722,7 @@ void btrfs_free_tree_block(struct btrfs_trans_handle *trans,
if (ret) {
spin_lock(&cache->space_info->lock);
cache->space_info->bytes_reserved -= buf->len;
+ cache->space_info->reservation_progress++;
spin_unlock(&cache->space_info->lock);
}
goto out;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index fd3f172..b5b9282 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2188,7 +2188,7 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
unsigned long nr_written = 0;
if (wbc->sync_mode == WB_SYNC_ALL)
- write_flags = WRITE_SYNC_PLUG;
+ write_flags = WRITE_SYNC;
else
write_flags = WRITE;
@@ -3046,17 +3046,38 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
}
while (!end) {
- off = extent_map_end(em);
- if (off >= max)
- end = 1;
+ u64 offset_in_extent;
+
+ /* break if the extent we found is outside the range */
+ if (em->start >= max || extent_map_end(em) < off)
+ break;
+
+ /*
+ * get_extent may return an extent that starts before our
+ * requested range. We have to make sure the ranges
+ * we return to fiemap always move forward and don't
+ * overlap, so adjust the offsets here
+ */
+ em_start = max(em->start, off);
- em_start = em->start;
- em_len = em->len;
+ /*
+ * record the offset from the start of the extent
+ * for adjusting the disk offset below
+ */
+ offset_in_extent = em_start - em->start;
em_end = extent_map_end(em);
+ em_len = em_end - em_start;
emflags = em->flags;
disko = 0;
flags = 0;
+ /*
+ * bump off for our next call to get_extent
+ */
+ off = extent_map_end(em);
+ if (off >= max)
+ end = 1;
+
if (em->block_start == EXTENT_MAP_LAST_BYTE) {
end = 1;
flags |= FIEMAP_EXTENT_LAST;
@@ -3067,7 +3088,7 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
flags |= (FIEMAP_EXTENT_DELALLOC |
FIEMAP_EXTENT_UNKNOWN);
} else {
- disko = em->block_start;
+ disko = em->block_start + offset_in_extent;
}
if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags))
flags |= FIEMAP_EXTENT_ENCODED;
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 7084140..f447b78 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -70,6 +70,19 @@ static noinline int btrfs_copy_from_user(loff_t pos, int num_pages,
/* Flush processor's dcache for this page */
flush_dcache_page(page);
+
+ /*
+ * if we get a partial write, we can end up with
+ * partially up to date pages. These add
+ * a lot of complexity, so make sure they don't
+ * happen by forcing this copy to be retried.
+ *
+ * The rest of the btrfs_file_write code will fall
+ * back to page at a time copies after we return 0.
+ */
+ if (!PageUptodate(page) && copied < count)
+ copied = 0;
+
iov_iter_advance(i, copied);
write_bytes -= copied;
total_copied += copied;
@@ -763,6 +776,27 @@ out:
}
/*
+ * on error we return an unlocked page and the error value
+ * on success we return a locked page and 0
+ */
+static int prepare_uptodate_page(struct page *page, u64 pos)
+{
+ int ret = 0;
+
+ if ((pos & (PAGE_CACHE_SIZE - 1)) && !PageUptodate(page)) {
+ ret = btrfs_readpage(NULL, page);
+ if (ret)
+ return ret;
+ lock_page(page);
+ if (!PageUptodate(page)) {
+ unlock_page(page);
+ return -EIO;
+ }
+ }
+ return 0;
+}
+
+/*
* this gets pages into the page cache and locks them down, it also properly
* waits for data=ordered extents to finish before allowing the pages to be
* modified.
@@ -777,6 +811,7 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
unsigned long index = pos >> PAGE_CACHE_SHIFT;
struct inode *inode = fdentry(file)->d_inode;
int err = 0;
+ int faili = 0;
u64 start_pos;
u64 last_pos;
@@ -794,15 +829,24 @@ again:
for (i = 0; i < num_pages; i++) {
pages[i] = grab_cache_page(inode->i_mapping, index + i);
if (!pages[i]) {
- int c;
- for (c = i - 1; c >= 0; c--) {
- unlock_page(pages[c]);
- page_cache_release(pages[c]);
- }
- return -ENOMEM;
+ faili = i - 1;
+ err = -ENOMEM;
+ goto fail;
+ }
+
+ if (i == 0)
+ err = prepare_uptodate_page(pages[i], pos);
+ if (i == num_pages - 1)
+ err = prepare_uptodate_page(pages[i],
+ pos + write_bytes);
+ if (err) {
+ page_cache_release(pages[i]);
+ faili = i - 1;
+ goto fail;
}
wait_on_page_writeback(pages[i]);
}
+ err = 0;
if (start_pos < inode->i_size) {
struct btrfs_ordered_extent *ordered;
lock_extent_bits(&BTRFS_I(inode)->io_tree,
@@ -842,6 +886,14 @@ again:
WARN_ON(!PageLocked(pages[i]));
}
return 0;
+fail:
+ while (faili >= 0) {
+ unlock_page(pages[faili]);
+ page_cache_release(pages[faili]);
+ faili--;
+ }
+ return err;
+
}
static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
@@ -851,7 +903,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
struct file *file = iocb->ki_filp;
struct inode *inode = fdentry(file)->d_inode;
struct btrfs_root *root = BTRFS_I(inode)->root;
- struct page *pinned[2];
struct page **pages = NULL;
struct iov_iter i;
loff_t *ppos = &iocb->ki_pos;
@@ -872,9 +923,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
will_write = ((file->f_flags & O_DSYNC) || IS_SYNC(inode) ||
(file->f_flags & O_DIRECT));
- pinned[0] = NULL;
- pinned[1] = NULL;
-
start_pos = pos;
vfs_check_frozen(inode->i_sb, SB_FREEZE_WRITE);
@@ -962,32 +1010,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
first_index = pos >> PAGE_CACHE_SHIFT;
last_index = (pos + iov_iter_count(&i)) >> PAGE_CACHE_SHIFT;
- /*
- * there are lots of better ways to do this, but this code
- * makes sure the first and last page in the file range are
- * up to date and ready for cow
- */
- if ((pos & (PAGE_CACHE_SIZE - 1))) {
- pinned[0] = grab_cache_page(inode->i_mapping, first_index);
- if (!PageUptodate(pinned[0])) {
- ret = btrfs_readpage(NULL, pinned[0]);
- BUG_ON(ret);
- wait_on_page_locked(pinned[0]);
- } else {
- unlock_page(pinned[0]);
- }
- }
- if ((pos + iov_iter_count(&i)) & (PAGE_CACHE_SIZE - 1)) {
- pinned[1] = grab_cache_page(inode->i_mapping, last_index);
- if (!PageUptodate(pinned[1])) {
- ret = btrfs_readpage(NULL, pinned[1]);
- BUG_ON(ret);
- wait_on_page_locked(pinned[1]);
- } else {
- unlock_page(pinned[1]);
- }
- }
-
while (iov_iter_count(&i) > 0) {
size_t offset = pos & (PAGE_CACHE_SIZE - 1);
size_t write_bytes = min(iov_iter_count(&i),
@@ -1024,8 +1046,20 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
copied = btrfs_copy_from_user(pos, num_pages,
write_bytes, pages, &i);
- dirty_pages = (copied + offset + PAGE_CACHE_SIZE - 1) >>
- PAGE_CACHE_SHIFT;
+
+ /*
+ * if we have trouble faulting in the pages, fall
+ * back to one page at a time
+ */
+ if (copied < write_bytes)
+ nrptrs = 1;
+
+ if (copied == 0)
+ dirty_pages = 0;
+ else
+ dirty_pages = (copied + offset +
+ PAGE_CACHE_SIZE - 1) >>
+ PAGE_CACHE_SHIFT;
if (num_pages > dirty_pages) {
if (copied > 0)
@@ -1069,10 +1103,6 @@ out:
err = ret;
kfree(pages);
- if (pinned[0])
- page_cache_release(pinned[0]);
- if (pinned[1])
- page_cache_release(pinned[1]);
*ppos = pos;
/*
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 0efdb65..119520b 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -90,13 +90,14 @@ static noinline int cow_file_range(struct inode *inode,
unsigned long *nr_written, int unlock);
static int btrfs_init_inode_security(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir)
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
{
int err;
err = btrfs_init_acl(trans, inode, dir);
if (!err)
- err = btrfs_xattr_security_init(trans, inode, dir);
+ err = btrfs_xattr_security_init(trans, inode, dir, qstr);
return err;
}
@@ -4704,7 +4705,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
if (IS_ERR(inode))
goto out_unlock;
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err) {
drop_inode = 1;
goto out_unlock;
@@ -4765,7 +4766,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
if (IS_ERR(inode))
goto out_unlock;
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err) {
drop_inode = 1;
goto out_unlock;
@@ -4806,9 +4807,6 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
int err;
int drop_inode = 0;
- if (inode->i_nlink == 0)
- return -ENOENT;
-
/* do not allow sys_link's with other subvols of the same device */
if (root->objectid != BTRFS_I(inode)->root->objectid)
return -EPERM;
@@ -4821,10 +4819,11 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
goto fail;
/*
- * 1 item for inode ref
+ * 2 items for inode and inode ref
* 2 items for dir items
+ * 1 item for parent inode
*/
- trans = btrfs_start_transaction(root, 3);
+ trans = btrfs_start_transaction(root, 5);
if (IS_ERR(trans)) {
err = PTR_ERR(trans);
goto fail;
@@ -4893,7 +4892,7 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
drop_on_err = 1;
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err)
goto out_fail;
@@ -6056,6 +6055,7 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
if (!skip_sum) {
dip->csums = kmalloc(sizeof(u32) * bio->bi_vcnt, GFP_NOFS);
if (!dip->csums) {
+ kfree(dip);
ret = -ENOMEM;
goto free_ordered;
}
@@ -7104,7 +7104,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
if (IS_ERR(inode))
goto out_unlock;
- err = btrfs_init_inode_security(trans, inode, dir);
+ err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name);
if (err) {
drop_inode = 1;
goto out_unlock;
@@ -7340,7 +7340,6 @@ static const struct address_space_operations btrfs_aops = {
.writepage = btrfs_writepage,
.writepages = btrfs_writepages,
.readpages = btrfs_readpages,
- .sync_page = block_sync_page,
.direct_IO = btrfs_direct_IO,
.invalidatepage = btrfs_invalidatepage,
.releasepage = btrfs_releasepage,
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5fdb2ab..d1bace3 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -158,7 +158,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg)
FS_SYNC_FL | FS_DIRSYNC_FL))
return -EOPNOTSUPP;
- if (!is_owner_or_cap(inode))
+ if (!inode_owner_or_capable(inode))
return -EACCES;
mutex_lock(&inode->i_mutex);
@@ -1077,7 +1077,7 @@ static noinline int btrfs_ioctl_subvol_setflags(struct file *file,
if (flags & ~BTRFS_SUBVOL_RDONLY)
return -EOPNOTSUPP;
- if (!is_owner_or_cap(inode))
+ if (!inode_owner_or_capable(inode))
return -EACCES;
down_write(&root->fs_info->subvol_sem);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index dd13eb8..9d554e8 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -162,7 +162,6 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
struct bio *cur;
int again = 0;
unsigned long num_run;
- unsigned long num_sync_run;
unsigned long batch_run = 0;
unsigned long limit;
unsigned long last_waited = 0;
@@ -173,11 +172,6 @@ static noinline int run_scheduled_bios(struct btrfs_device *device)
limit = btrfs_async_submit_limit(fs_info);
limit = limit * 2 / 3;
- /* we want to make sure that every time we switch from the sync
- * list to the normal list, we unplug
- */
- num_sync_run = 0;
-
loop:
spin_lock(&device->io_lock);
@@ -223,15 +217,6 @@ loop_lock:
spin_unlock(&device->io_lock);
- /*
- * if we're doing the regular priority list, make sure we unplug
- * for any high prio bios we've sent down
- */
- if (pending_bios == &device->pending_bios && num_sync_run > 0) {
- num_sync_run = 0;
- blk_run_backing_dev(bdi, NULL);
- }
-
while (pending) {
rmb();
@@ -259,19 +244,11 @@ loop_lock:
BUG_ON(atomic_read(&cur->bi_cnt) == 0);
- if (cur->bi_rw & REQ_SYNC)
- num_sync_run++;
-
submit_bio(cur->bi_rw, cur);
num_run++;
batch_run++;
- if (need_resched()) {
- if (num_sync_run) {
- blk_run_backing_dev(bdi, NULL);
- num_sync_run = 0;
- }
+ if (need_resched())
cond_resched();
- }
/*
* we made progress, there is more work to do and the bdi
@@ -304,13 +281,8 @@ loop_lock:
* against it before looping
*/
last_waited = ioc->last_waited;
- if (need_resched()) {
- if (num_sync_run) {
- blk_run_backing_dev(bdi, NULL);
- num_sync_run = 0;
- }
+ if (need_resched())
cond_resched();
- }
continue;
}
spin_lock(&device->io_lock);
@@ -323,22 +295,6 @@ loop_lock:
}
}
- if (num_sync_run) {
- num_sync_run = 0;
- blk_run_backing_dev(bdi, NULL);
- }
- /*
- * IO has already been through a long path to get here. Checksumming,
- * async helper threads, perhaps compression. We've done a pretty
- * good job of collecting a batch of IO and should just unplug
- * the device right away.
- *
- * This will help anyone who is waiting on the IO, they might have
- * already unplugged, but managed to do so before the bio they
- * cared about found its way down here.
- */
- blk_run_backing_dev(bdi, NULL);
-
cond_resched();
if (again)
goto loop;
@@ -2955,7 +2911,7 @@ static int find_live_mirror(struct map_lookup *map, int first, int num,
static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
u64 logical, u64 *length,
struct btrfs_multi_bio **multi_ret,
- int mirror_num, struct page *unplug_page)
+ int mirror_num)
{
struct extent_map *em;
struct map_lookup *map;
@@ -2987,11 +2943,6 @@ again:
em = lookup_extent_mapping(em_tree, logical, *length);
read_unlock(&em_tree->lock);
- if (!em && unplug_page) {
- kfree(multi);
- return 0;
- }
-
if (!em) {
printk(KERN_CRIT "unable to find logical %llu len %llu\n",
(unsigned long long)logical,
@@ -3047,13 +2998,13 @@ again:
*length = em->len - offset;
}
- if (!multi_ret && !unplug_page)
+ if (!multi_ret)
goto out;
num_stripes = 1;
stripe_index = 0;
if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
- if (unplug_page || (rw & REQ_WRITE))
+ if (rw & REQ_WRITE)
num_stripes = map->num_stripes;
else if (mirror_num)
stripe_index = mirror_num - 1;
@@ -3075,7 +3026,7 @@ again:
stripe_index = do_div(stripe_nr, factor);
stripe_index *= map->sub_stripes;
- if (unplug_page || (rw & REQ_WRITE))
+ if (rw & REQ_WRITE)
num_stripes = map->sub_stripes;
else if (mirror_num)
stripe_index += mirror_num - 1;
@@ -3095,22 +3046,10 @@ again:
BUG_ON(stripe_index >= map->num_stripes);
for (i = 0; i < num_stripes; i++) {
- if (unplug_page) {
- struct btrfs_device *device;
- struct backing_dev_info *bdi;
-
- device = map->stripes[stripe_index].dev;
- if (device->bdev) {
- bdi = blk_get_backing_dev_info(device->bdev);
- if (bdi->unplug_io_fn)
- bdi->unplug_io_fn(bdi, unplug_page);
- }
- } else {
- multi->stripes[i].physical =
- map->stripes[stripe_index].physical +
- stripe_offset + stripe_nr * map->stripe_len;
- multi->stripes[i].dev = map->stripes[stripe_index].dev;
- }
+ multi->stripes[i].physical =
+ map->stripes[stripe_index].physical +
+ stripe_offset + stripe_nr * map->stripe_len;
+ multi->stripes[i].dev = map->stripes[stripe_index].dev;
stripe_index++;
}
if (multi_ret) {
@@ -3128,7 +3067,7 @@ int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
struct btrfs_multi_bio **multi_ret, int mirror_num)
{
return __btrfs_map_block(map_tree, rw, logical, length, multi_ret,
- mirror_num, NULL);
+ mirror_num);
}
int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
@@ -3196,14 +3135,6 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
return 0;
}
-int btrfs_unplug_page(struct btrfs_mapping_tree *map_tree,
- u64 logical, struct page *page)
-{
- u64 length = PAGE_CACHE_SIZE;
- return __btrfs_map_block(map_tree, READ, logical, &length,
- NULL, 0, page);
-}
-
static void end_bio_multi_stripe(struct bio *bio, int err)
{
struct btrfs_multi_bio *multi = bio->bi_private;
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index a577653..d779cef 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -370,7 +370,8 @@ int btrfs_removexattr(struct dentry *dentry, const char *name)
}
int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir)
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
{
int err;
size_t len;
@@ -378,7 +379,8 @@ int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
char *suffix;
char *name;
- err = security_inode_init_security(inode, dir, &suffix, &value, &len);
+ err = security_inode_init_security(inode, dir, qstr, &suffix, &value,
+ &len);
if (err) {
if (err == -EOPNOTSUPP)
return 0;
diff --git a/fs/btrfs/xattr.h b/fs/btrfs/xattr.h
index 7a43fd6..b3cc803 100644
--- a/fs/btrfs/xattr.h
+++ b/fs/btrfs/xattr.h
@@ -37,6 +37,7 @@ extern int btrfs_setxattr(struct dentry *dentry, const char *name,
extern int btrfs_removexattr(struct dentry *dentry, const char *name);
extern int btrfs_xattr_security_init(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir);
+ struct inode *inode, struct inode *dir,
+ const struct qstr *qstr);
#endif /* __XATTR__ */
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index f5ec2d4..faccd47 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -57,7 +57,8 @@ static struct list_head *zlib_alloc_workspace(void)
if (!workspace)
return ERR_PTR(-ENOMEM);
- workspace->def_strm.workspace = vmalloc(zlib_deflate_workspacesize());
+ workspace->def_strm.workspace = vmalloc(zlib_deflate_workspacesize(
+ MAX_WBITS, MAX_MEM_LEVEL));
workspace->inf_strm.workspace = vmalloc(zlib_inflate_workspacesize());
workspace->buf = kmalloc(PAGE_CACHE_SIZE, GFP_NOFS);
if (!workspace->def_strm.workspace ||