Hi Alex, With the latest changes i see both group preallocation and inode preallocation being used by mballoc. Since the choice is now made with file size not just the request size. (None of the test were actually using inode prealloc previously). Now that the test are using inode prealloc i see the below dump stack on the console. I guess you put in the dump stack there to find out how often these happen. Do you still want the dump stack to be there. Or can I remove it. ? uh-oh! some one just deleted it Call Trace: [c0000000e4143970] [c000000000010554] .show_stack+0x6c/0x1a0 (unreliable) [c0000000e4143a10] [c00000000019db90] .ext4_mb_discard_inode_preallocations+0x1d4/0x428 [c0000000e4143b20] [c000000000178e8c] .ext4_discard_reservation+0x30/0xb4 [c0000000e4143bc0] [c00000000017c0b8] .ext4_release_file+0x54/0xbc [c0000000e4143c50] [c0000000000de4b0] .__fput+0x114/0x214 [c0000000e4143d00] [c0000000000db2d8] .filp_close+0xb0/0xd8 [c0000000e4143d90] [c0000000000dbb20] .sys_close+0xc4/0x128 [c0000000e4143e30] [c00000000000872c] syscall_exit+0x0/0x40 uh-oh! some one just deleted it Call Trace: [c0000000ede97970] [c000000000010554] .show_stack+0x6c/0x1a0 (unreliable) [c0000000ede97a10] [c00000000019db90] .ext4_mb_discard_inode_preallocations+0x1d4/0x428 [c0000000ede97b20] [c000000000178e8c] .ext4_discard_reservation+0x30/0xb4 [c0000000ede97bc0] [c00000000017c0b8] .ext4_release_file+0x54/0xbc [c0000000ede97c50] [c0000000000de4b0] .__fput+0x114/0x214 [c0000000ede97d00] [c0000000000db2d8] .filp_close+0xb0/0xd8 [c0000000ede97d90] [c0000000000dbb20] .sys_close+0xc4/0x128 [c0000000ede97e30] [c00000000000872c] syscall_exit+0x0/0x40 uh-oh! some one just deleted it Call Trace: [c0000000e6b1f970] [c000000000010554] .show_stack+0x6c/0x1a0 (unreliable) [c0000000e6b1fa10] [c00000000019db90] .ext4_mb_discard_inode_preallocations+0x1d4/0x428 [c0000000e6b1fb20] [c000000000178e8c] .ext4_discard_reservation+0x30/0xb4 [c0000000e6b1fbc0] [c00000000017c0b8] .ext4_release_file+0x54/0xbc [c0000000e6b1fc50] [c0000000000de4b0] .__fput+0x114/0x214 [c0000000e6b1fd00] [c0000000000db2d8] .filp_close+0xb0/0xd8 [c0000000e6b1fd90] [c0000000000dbb20] .sys_close+0xc4/0x128 [c0000000e6b1fe30] [c00000000000872c] syscall_exit+0x0/0x40 -- 0:conmux-control -- time-stamp -- Jan/08/08 2:20:11 -- -- 0:conmux-control -- time-stamp -- Jan/08/08 2:38:19 -- (bot:conmon-payload) disconnected - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
