From eeb393943ef866c9942676190fee9873c1c36fb0 Mon Sep 17 00:00:00 2001 From: Brian Behlendorf Date: Tue, 19 Dec 2023 20:02:34 +0100 Subject: [PATCH] Linux 6.5 compat: check BLK_OPEN_EXCL is defined On some systems we already have blkdev_get_by_path() with 4 args but still the old FMODE_EXCL and not BLK_OPEN_EXCL defined. The vdev_bdev_mode() function was added to handle this case but there was no generic way to specify exclusive access. Signed-off-by: Brian Behlendorf --- module/os/linux/zfs/vdev_disk.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/module/os/linux/zfs/vdev_disk.c b/module/os/linux/zfs/vdev_disk.c index 48ac55f07034..8b5aa94fe4f0 100644 --- a/module/os/linux/zfs/vdev_disk.c +++ b/module/os/linux/zfs/vdev_disk.c @@ -85,7 +85,7 @@ static blk_mode_t #else static fmode_t #endif -vdev_bdev_mode(spa_mode_t spa_mode) +vdev_bdev_mode(spa_mode_t spa_mode, boolean_t exclusive) { #ifdef HAVE_BLK_MODE_T blk_mode_t mode = 0; @@ -95,6 +95,9 @@ vdev_bdev_mode(spa_mode_t spa_mode) if (spa_mode & SPA_MODE_WRITE) mode |= BLK_OPEN_WRITE; + + if (exclusive) + mode |= BLK_OPEN_EXCL; #else fmode_t mode = 0; @@ -103,6 +106,9 @@ vdev_bdev_mode(spa_mode_t spa_mode) if (spa_mode & SPA_MODE_WRITE) mode |= FMODE_WRITE; + + if (exclusive) + mode |= FMODE_EXCL; #endif return (mode); @@ -225,10 +231,10 @@ vdev_blkdev_get_by_path(const char *path, spa_mode_t mode, void *holder, { #ifdef HAVE_BLKDEV_GET_BY_PATH_4ARG return (blkdev_get_by_path(path, - vdev_bdev_mode(mode) | BLK_OPEN_EXCL, holder, hops)); + vdev_bdev_mode(mode, B_TRUE), holder, hops)); #else return (blkdev_get_by_path(path, - vdev_bdev_mode(mode) | FMODE_EXCL, holder)); + vdev_bdev_mode(mode, B_TRUE), holder)); #endif } @@ -238,7 +244,7 @@ vdev_blkdev_put(struct block_device *bdev, spa_mode_t mode, void *holder) #ifdef HAVE_BLKDEV_PUT_HOLDER return (blkdev_put(bdev, holder)); #else - return (blkdev_put(bdev, vdev_bdev_mode(mode) | FMODE_EXCL)); + return (blkdev_put(bdev, vdev_bdev_mode(mode, B_TRUE))); #endif } @@ -248,9 +254,9 @@ vdev_disk_open(vdev_t *v, uint64_t *psize, uint64_t *max_psize, { struct block_device *bdev; #ifdef HAVE_BLK_MODE_T - blk_mode_t mode = vdev_bdev_mode(spa_mode(v->vdev_spa)); + blk_mode_t mode = vdev_bdev_mode(spa_mode(v->vdev_spa), B_FALSE); #else - fmode_t mode = vdev_bdev_mode(spa_mode(v->vdev_spa)); + fmode_t mode = vdev_bdev_mode(spa_mode(v->vdev_spa), B_FALSE); #endif hrtime_t timeout = MSEC2NSEC(zfs_vdev_open_timeout_ms); vdev_disk_t *vd;