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Diffstat (limited to 'fs/btrfs/volumes.h')
| -rw-r--r-- | fs/btrfs/volumes.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 2128a032c3b7..5203095318b0 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -15,6 +15,12 @@ #define BTRFS_MAX_DATA_CHUNK_SIZE (10ULL * SZ_1G) +/* + * Arbitratry maximum size of one discard request to limit potentially long time + * spent in blkdev_issue_discard(). + */ +#define BTRFS_MAX_DISCARD_CHUNK_SIZE (SZ_1G) + extern struct mutex uuid_mutex; #define BTRFS_STRIPE_LEN SZ_64K |