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| author | Ingo Molnar <mingo@kernel.org> | 2019-05-03 12:52:45 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-05-03 12:52:45 +0200 |
| commit | 176d2323c7743e03e3bb4298b6f25eea2f00fed0 (patch) | |
| tree | c751cba895aa8870372c97c8340166de079eae8e /fs/btrfs/ioctl.c | |
| parent | 9b019acb72e4b5741d88e8936d6f200ed44b66b2 (diff) | |
| parent | ea9866793d1e925b4d320eaea409263b2a568f38 (diff) | |
| download | talos-op-linux-176d2323c7743e03e3bb4298b6f25eea2f00fed0.tar.gz talos-op-linux-176d2323c7743e03e3bb4298b6f25eea2f00fed0.zip | |
Merge branch 'linus' into sched/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index ec2d8919e7fb..cd4e693406a0 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -501,6 +501,16 @@ static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg) if (!capable(CAP_SYS_ADMIN)) return -EPERM; + /* + * If the fs is mounted with nologreplay, which requires it to be + * mounted in RO mode as well, we can not allow discard on free space + * inside block groups, because log trees refer to extents that are not + * pinned in a block group's free space cache (pinning the extents is + * precisely the first phase of replaying a log tree). + */ + if (btrfs_test_opt(fs_info, NOLOGREPLAY)) + return -EROFS; + rcu_read_lock(); list_for_each_entry_rcu(device, &fs_info->fs_devices->devices, dev_list) { |
