author | Linus Torvalds <torvalds@linux-foundation.org> | |
Mon, 28 Mar 2011 22:31:05 +0000 (15:31 -0700) | ||
committer | Linus Torvalds <torvalds@linux-foundation.org> | |
Mon, 28 Mar 2011 22:31:05 +0000 (15:31 -0700) |
* 'for-linus-unmerged' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: (45 commits)
Btrfs: fix __btrfs_map_block on 32 bit machines
btrfs: fix possible deadlock by clearing __GFP_FS flag
btrfs: check link counter overflow in link(2)
btrfs: don't mess with i_nlink of unlocked inode in rename()
Btrfs: check return value of btrfs_alloc_path()
Btrfs: fix OOPS of empty filesystem after balance
Btrfs: fix memory leak of empty filesystem after balance
Btrfs: fix return value of setflags ioctl
Btrfs: fix uncheck memory allocations
btrfs: make inode ref log recovery faster
Btrfs: add btrfs_trim_fs() to handle FITRIM
Btrfs: adjust btrfs_discard_extent() return errors and trimmed bytes
Btrfs: make btrfs_map_block() return entire free extent for each device of RAID0/1/10/DUP
Btrfs: make update_reserved_bytes() public
btrfs: return EXDEV when linking from different subvolumes
Btrfs: Per file/directory controls for COW and compression
Btrfs: add datacow flag in inode flag
btrfs: use GFP_NOFS instead of GFP_KERNEL
Btrfs: check return value of read_tree_block()
btrfs: properly access unaligned checksum buffer
...
Fix up trivial conflicts in fs/btrfs/volumes.c due to plug removal in
the block layer.
Btrfs: fix __btrfs_map_block on 32 bit machines
btrfs: fix possible deadlock by clearing __GFP_FS flag
btrfs: check link counter overflow in link(2)
btrfs: don't mess with i_nlink of unlocked inode in rename()
Btrfs: check return value of btrfs_alloc_path()
Btrfs: fix OOPS of empty filesystem after balance
Btrfs: fix memory leak of empty filesystem after balance
Btrfs: fix return value of setflags ioctl
Btrfs: fix uncheck memory allocations
btrfs: make inode ref log recovery faster
Btrfs: add btrfs_trim_fs() to handle FITRIM
Btrfs: adjust btrfs_discard_extent() return errors and trimmed bytes
Btrfs: make btrfs_map_block() return entire free extent for each device of RAID0/1/10/DUP
Btrfs: make update_reserved_bytes() public
btrfs: return EXDEV when linking from different subvolumes
Btrfs: Per file/directory controls for COW and compression
Btrfs: add datacow flag in inode flag
btrfs: use GFP_NOFS instead of GFP_KERNEL
Btrfs: check return value of read_tree_block()
btrfs: properly access unaligned checksum buffer
...
Fix up trivial conflicts in fs/btrfs/volumes.c due to plug removal in
the block layer.
1 | 2 | |||
---|---|---|---|---|
fs/btrfs/disk-io.c | patch | | diff1 | | diff2 | | blob | history |
fs/btrfs/extent_io.c | patch | | diff1 | | diff2 | | blob | history |
fs/btrfs/inode.c | patch | | diff1 | | diff2 | | blob | history |
fs/btrfs/ioctl.c | patch | | diff1 | | diff2 | | blob | history |
fs/btrfs/volumes.c | patch | | diff1 | | diff2 | | blob | history |
fs/btrfs/xattr.c | patch | | diff1 | | diff2 | | blob | history |
include/linux/fs.h | patch | | diff1 | | diff2 | | blob | history |
diff --cc fs/btrfs/disk-io.c
Simple merge
diff --cc fs/btrfs/extent_io.c
Simple merge
diff --cc fs/btrfs/inode.c
index 119520bdb9a540d8dc0f9bcf94d66b01df0af068,06274186b290de73cf46cbcf884fce40899a9e8d..93c28a1d6bdc758b5270e6b8c7b448d106f1ab7b
--- 1/fs/btrfs/inode.c
--- 2/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
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;
+ return -EXDEV;
+
+ if (inode->i_nlink == ~0U)
+ return -EMLINK;
btrfs_inc_nlink(inode);
inode->i_ctime = CURRENT_TIME;
diff --cc fs/btrfs/ioctl.c
index d1bace3df9b61fab21ca50a9e84ff427fedc75ea,6b70e0e2bd1e224dd0bdcaf72d9a86f55e2944c2..7c07fe26b7cfcf7e7872686da07f5676e87549c4
--- 1/fs/btrfs/ioctl.c
--- 2/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
if (copy_from_user(&flags, arg, sizeof(flags)))
return -EFAULT;
- if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
- FS_NOATIME_FL | FS_NODUMP_FL | \
- FS_SYNC_FL | FS_DIRSYNC_FL))
- return -EOPNOTSUPP;
+ ret = check_flags(flags);
+ if (ret)
+ return ret;
- if (!is_owner_or_cap(inode))
+ if (!inode_owner_or_capable(inode))
return -EACCES;
mutex_lock(&inode->i_mutex);
diff --cc fs/btrfs/volumes.c
index 9d554e8e6583e62a277eaa906ebd8dbe03d0f39f,8b9fb8c7683da9fc2652281cb21c99bdcbab2f2e..309a57b9fc85e3a6f09809da14d0cd9e1df55fb5
--- 1/fs/btrfs/volumes.c
--- 2/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
num_stripes = 1;
stripe_index = 0;
- if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
- if (rw & REQ_WRITE)
+ stripe_nr_orig = stripe_nr;
+ stripe_nr_end = (offset + *length + map->stripe_len - 1) &
+ (~(map->stripe_len - 1));
+ do_div(stripe_nr_end, map->stripe_len);
+ stripe_end_offset = stripe_nr_end * map->stripe_len -
+ (offset + *length);
+ if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
+ if (rw & REQ_DISCARD)
+ num_stripes = min_t(u64, map->num_stripes,
+ stripe_nr_end - stripe_nr_orig);
+ stripe_index = do_div(stripe_nr, map->num_stripes);
+ } else if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
- if (unplug_page || (rw & (REQ_WRITE | REQ_DISCARD)))
++ if (rw & (REQ_WRITE | REQ_DISCARD))
num_stripes = map->num_stripes;
else if (mirror_num)
stripe_index = mirror_num - 1;
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 (rw & REQ_DISCARD)
+ num_stripes = min_t(u64, map->sub_stripes *
+ (stripe_nr_end - stripe_nr_orig),
+ map->num_stripes);
else if (mirror_num)
stripe_index += mirror_num - 1;
else {
}
BUG_ON(stripe_index >= map->num_stripes);
- for (i = 0; i < num_stripes; i++) {
- 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 (rw & REQ_DISCARD) {
+ for (i = 0; i < num_stripes; i++) {
+ 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;
+
+ if (map->type & BTRFS_BLOCK_GROUP_RAID0) {
+ u64 stripes;
+ u32 last_stripe = 0;
+ int j;
+
+ div_u64_rem(stripe_nr_end - 1,
+ map->num_stripes,
+ &last_stripe);
+
+ for (j = 0; j < map->num_stripes; j++) {
+ u32 test;
+
+ div_u64_rem(stripe_nr_end - 1 - j,
+ map->num_stripes, &test);
+ if (test == stripe_index)
+ break;
+ }
+ stripes = stripe_nr_end - 1 - j;
+ do_div(stripes, map->num_stripes);
+ multi->stripes[i].length = map->stripe_len *
+ (stripes - stripe_nr + 1);
+
+ if (i == 0) {
+ multi->stripes[i].length -=
+ stripe_offset;
+ stripe_offset = 0;
+ }
+ if (stripe_index == last_stripe)
+ multi->stripes[i].length -=
+ stripe_end_offset;
+ } else if (map->type & BTRFS_BLOCK_GROUP_RAID10) {
+ u64 stripes;
+ int j;
+ int factor = map->num_stripes /
+ map->sub_stripes;
+ u32 last_stripe = 0;
+
+ div_u64_rem(stripe_nr_end - 1,
+ factor, &last_stripe);
+ last_stripe *= map->sub_stripes;
+
+ for (j = 0; j < factor; j++) {
+ u32 test;
+
+ div_u64_rem(stripe_nr_end - 1 - j,
+ factor, &test);
+
+ if (test ==
+ stripe_index / map->sub_stripes)
+ break;
+ }
+ stripes = stripe_nr_end - 1 - j;
+ do_div(stripes, factor);
+ multi->stripes[i].length = map->stripe_len *
+ (stripes - stripe_nr + 1);
+
+ if (i < map->sub_stripes) {
+ multi->stripes[i].length -=
+ stripe_offset;
+ if (i == map->sub_stripes - 1)
+ stripe_offset = 0;
+ }
+ if (stripe_index >= last_stripe &&
+ stripe_index <= (last_stripe +
+ map->sub_stripes - 1)) {
+ multi->stripes[i].length -=
+ stripe_end_offset;
+ }
+ } else
+ multi->stripes[i].length = *length;
+
+ stripe_index++;
+ if (stripe_index == map->num_stripes) {
+ /* This could only happen for RAID0/10 */
+ stripe_index = 0;
+ stripe_nr++;
+ }
+ }
+ } else {
+ 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) {
*multi_ret = multi;
diff --cc fs/btrfs/xattr.c
Simple merge
diff --cc include/linux/fs.h
Simple merge