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| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-04-08 21:36:54 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2013-04-08 21:36:54 +0200 |
| commit | 0b824f8dad9fdfc7c1bf9c1d3ac744075eb73ec6 (patch) | |
| tree | 7559859702f2fa02f6a4db64cf10f6c2e3f80c21 /drivers/md/md.c | |
| parent | 6dbe51c251a327e012439c4772097a13df43c5b8 (diff) | |
| parent | 3d5a96582303e28c48699f3faaf920ef7d43e6f2 (diff) | |
| download | olio-linux-3.10-0b824f8dad9fdfc7c1bf9c1d3ac744075eb73ec6.tar.xz olio-linux-3.10-0b824f8dad9fdfc7c1bf9c1d3ac744075eb73ec6.zip | |
Merge remote-tracking branch 'arm-soc/clksrc/cleanup' into sunxi/core-for-3.10
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 3db3d1b271f..fcb878f8879 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -307,6 +307,10 @@ static void md_make_request(struct request_queue *q, struct bio *bio) bio_io_error(bio); return; } + if (mddev->ro == 1 && unlikely(rw == WRITE)) { + bio_endio(bio, bio_sectors(bio) == 0 ? 0 : -EROFS); + return; + } smp_rmb(); /* Ensure implications of 'active' are visible */ rcu_read_lock(); if (mddev->suspended) { @@ -2994,6 +2998,9 @@ rdev_size_store(struct md_rdev *rdev, const char *buf, size_t len) } else if (!sectors) sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) - rdev->data_offset; + if (!my_mddev->pers->resize) + /* Cannot change size for RAID0 or Linear etc */ + return -EINVAL; } if (sectors < my_mddev->dev_sectors) return -EINVAL; /* component must fit device */ @@ -6525,7 +6532,17 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode, mddev->ro = 0; sysfs_notify_dirent_safe(mddev->sysfs_state); set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); - md_wakeup_thread(mddev->thread); + /* mddev_unlock will wake thread */ + /* If a device failed while we were read-only, we + * need to make sure the metadata is updated now. + */ + if (test_bit(MD_CHANGE_DEVS, &mddev->flags)) { + mddev_unlock(mddev); + wait_event(mddev->sb_wait, + !test_bit(MD_CHANGE_DEVS, &mddev->flags) && + !test_bit(MD_CHANGE_PENDING, &mddev->flags)); + mddev_lock(mddev); + } } else { err = -EROFS; goto abort_unlock; |