From: Adrian Hunter Date: Thu, 4 Apr 2013 13:41:05 +0000 (+0300) Subject: Revert "mmc: core: wait while adding MMC host to ensure root mounts successfully" X-Git-Tag: v3.10-rc1~96^2~15 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=f9a94e0a3f18ae4c0245d4a16d0ee20e93fd7bad;p=linux.git Revert "mmc: core: wait while adding MMC host to ensure root mounts successfully" This reverts commit 3500ed90b26a9935b943b5e2e4cd3226600d6b58. The reverted patch caused a significant performance regression when booting with the root file system on eMMC. Before the patch: [ 1.625623] VFS: Mounted root (ext4 filesystem) readonly on device 179:2. After the patch: [ 1.935851] VFS: Mounted root (ext4 filesystem) readonly on device 179:2. That was an addition of 310 ms which is a 19% performance degradation. Signed-off-by: Adrian Hunter Signed-off-by: Chris Ball --- diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index ad7decc3340a..3bf1c462eded 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2418,7 +2418,6 @@ void mmc_start_host(struct mmc_host *host) host->rescan_disable = 0; mmc_power_up(host); mmc_detect_change(host, 0); - mmc_flush_scheduled_work(); } void mmc_stop_host(struct mmc_host *host)