OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

for-5.2-rc4-tag 

-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAlz/z0wACgkQxWXV+ddt
 WDt/4g//eS+USsVpHV65AoOC+LWHQFvKHVNX97l53yy7GvINxgCO5+X7MctvCP1P
 cEhhyGhapTFWinOj2zoMSz+mk1//wkqPsC9KzN+ha1fx0ktj+IKms+xbh3kFsygq
 dbqLMBHobGpCVV1z7kg+YN0OnG3W90qv/5TqeYhPADBEzEDffXuj+5qEul88J47h
 n4GP309mJcJwO1SmYOMFTchZDKJJnFMejr+KS+hOvzh3i5C6ZVOLeEs2yksdFvUi
 X9zeM9sbzshPonzRQVR9xazzW3JKP69rgkz+fo5TLnKqYwXiGN9ObCCjtKm/rck6
 pkJbvSmqV6QpX/pBUwdI/8DjgQyrPlfVyVcv5lU960mwya0eCkJYTa95bMC7N4UJ
 NNfROq9aJHKmct/rHECLsOwRTy2KuAqpX7+Ktjy6Sarw9bvlPwpgBep7PvYR9DXf
 mC9QHcRTYDCoKR5SF5xzB5lQHVOfWe6dduCugW8BhvO8t3ty+IW8p9WfcNXkTVu8
 SQWuxF2Y9uOEuTJMmyw6gbl1KRppg+U95r7vpKKbPFXMrsJDcGy2eUhMHfChwnkO
 brI2scsAaJg+UMvTjjO/8DVw4qpR9UDZaDgPqsGcFCNIQv65bPlL/UnQD112M2Ba
 w9FsvwbyI1AgUC0JsslLoHQVcOqHl2DnxFyvtbFTy0zcJK8fPxY=
 =UByh
 -----END PGP SIGNATURE-----

Merge tag 'for-5.2-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fix from David Sterba:
 "One regression fix to TRIM ioctl.

  The range cannot be used as its meaning can be confusing regarding
  physical and logical addresses. This confusion in code led to
  potential corruptions when the range overlapped data.

  The original patch made it to several stable kernels and was promptly
  reverted, the version for master branch is different due to additional
  changes but the change is effectively the same"

* tag 'for-5.2-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: Always trim all unallocated space in btrfs_trim_free_extents
This commit is contained in:
Linus Torvalds 2019-06-11 15:10:15 -10:00
parent 01ccc3ad44 8103d10b71
commit 6fa425a265
1 changed files with 3 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
fs/btrfs/extent-tree.c
View File

@ -11137,13 +11137,11 @@ int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info,
* it while performing the free space search since we have already
* held back allocations.
*/
static int btrfs_trim_free_extents(struct btrfs_device *device,
struct fstrim_range *range, u64 *trimmed)
static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed)
{
u64 start, len = 0, end = 0;
u64 start = SZ_1M, len = 0, end = 0;
int ret;
start = max_t(u64, range->start, SZ_1M);
*trimmed = 0;
/* Discard not supported = nothing to do. */
@ -11186,22 +11184,6 @@ static int btrfs_trim_free_extents(struct btrfs_device *device,
break;
}
/* Keep going until we satisfy minlen or reach end of space */
if (len < range->minlen) {
mutex_unlock(&fs_info->chunk_mutex);
start += len;
continue;
}
/* If we are out of the passed range break */
if (start > range->start + range->len - 1) {
mutex_unlock(&fs_info->chunk_mutex);
break;
}
start = max(range->start, start);
len = min(range->len, len);
ret = btrfs_issue_discard(device->bdev, start, len,
&bytes);
if (!ret)
@ -11216,10 +11198,6 @@ static int btrfs_trim_free_extents(struct btrfs_device *device,
start += len;
*trimmed += bytes;
/* We've trimmed enough */
if (*trimmed >= range->len)
break;
if (fatal_signal_pending(current)) {
ret = -ERESTARTSYS;
break;
@ -11303,7 +11281,7 @@ int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range)
mutex_lock(&fs_info->fs_devices->device_list_mutex);
devices = &fs_info->fs_devices->devices;
list_for_each_entry(device, devices, dev_list) {
ret = btrfs_trim_free_extents(device, range, &group_trimmed);
ret = btrfs_trim_free_extents(device, &group_trimmed);
if (ret) {
dev_failed++;
dev_ret = ret;