From 2fcddee8cd8fcce4cc5589a0344f40a28a6dd26f Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 28 Oct 2019 08:41:45 -0700 Subject: [PATCH] xfs: simplify parsing of allocsize mount option Rework xfs_parseargs to fill out the default value and then parse the option directly into the mount structure, similar to what we do for other updates, and open code the now trivial updates based on on the on-disk superblock directly into xfs_mountfs. Note that this change rejects the allocsize=0 mount option that has been documented as invalid for a long time instead of just ignoring it. Signed-off-by: Christoph Hellwig Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_mount.c | 31 +++++-------------------------- fs/xfs/xfs_mount.h | 6 ------ fs/xfs/xfs_super.c | 26 +++++++++++--------------- 3 files changed, 16 insertions(+), 47 deletions(-) diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 1853797ea938..3e8eedf01eb2 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -426,30 +426,6 @@ xfs_update_alignment(xfs_mount_t *mp) } /* - * Set the default minimum read and write sizes unless - * already specified in a mount option. - * We use smaller I/O sizes when the file system - * is being used for NFS service (wsync mount option). - */ -STATIC void -xfs_set_rw_sizes(xfs_mount_t *mp) -{ - xfs_sb_t *sbp = &(mp->m_sb); - int readio_log, writeio_log; - - if (!(mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)) - writeio_log = XFS_WRITEIO_LOG_LARGE; - else - writeio_log = mp->m_allocsize_log; - - if (sbp->sb_blocklog > writeio_log) - mp->m_allocsize_log = sbp->sb_blocklog; - } else - mp->m_allocsize_log = writeio_log; - mp->m_allocsize_blocks = 1 << (mp->m_allocsize_log - sbp->sb_blocklog); -} - -/* * precalculate the low space thresholds for dynamic speculative preallocation. */ void @@ -713,9 +689,12 @@ xfs_mountfs( goto out_remove_errortag; /* - * Set the minimum read and write sizes + * Update the preferred write size based on the information from the + * on-disk superblock. */ - xfs_set_rw_sizes(mp); + mp->m_allocsize_log = + max_t(uint32_t, sbp->sb_blocklog, mp->m_allocsize_log); + mp->m_allocsize_blocks = 1U << (mp->m_allocsize_log - sbp->sb_blocklog); /* set the low space thresholds for dynamic preallocation */ xfs_set_low_space_thresholds(mp); diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 109081c16a07..712dbb2039cd 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -244,12 +244,6 @@ typedef struct xfs_mount { #define XFS_MOUNT_DAX (1ULL << 62) /* TEST ONLY! */ - -/* - * Default write size. - */ -#define XFS_WRITEIO_LOG_LARGE 16 - /* * Max and min values for mount-option defined I/O * preallocation sizes. diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index d1a0958f336d..3e5002d2a79e 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -159,8 +159,7 @@ xfs_parseargs( const struct super_block *sb = mp->m_super; char *p; substring_t args[MAX_OPT_ARGS]; - int iosize = 0; - uint8_t iosizelog = 0; + int size = 0; /* * set up the mount name first so all the errors will refer to the @@ -192,6 +191,7 @@ xfs_parseargs( */ mp->m_logbufs = -1; mp->m_logbsize = -1; + mp->m_allocsize_log = 16; /* 64k */ if (!options) goto done; @@ -225,9 +225,10 @@ xfs_parseargs( return -ENOMEM; break; case Opt_allocsize: - if (suffix_kstrtoint(args, 10, &iosize)) + if (suffix_kstrtoint(args, 10, &size)) return -EINVAL; - iosizelog = ffs(iosize) - 1; + mp->m_allocsize_log = ffs(size) - 1; + mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; break; case Opt_grpid: case Opt_bsdgroups: @@ -395,17 +396,12 @@ done: return -EINVAL; } - if (iosizelog) { - if (iosizelog > XFS_MAX_IO_LOG || - iosizelog < XFS_MIN_IO_LOG) { - xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", - iosizelog, XFS_MIN_IO_LOG, - XFS_MAX_IO_LOG); - return -EINVAL; - } - - mp->m_flags |= XFS_MOUNT_DFLT_IOSIZE; - mp->m_allocsize_log = iosizelog; + if ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) && + (mp->m_allocsize_log > XFS_MAX_IO_LOG || + mp->m_allocsize_log < XFS_MIN_IO_LOG)) { + xfs_warn(mp, "invalid log iosize: %d [not %d-%d]", + mp->m_allocsize_log, XFS_MIN_IO_LOG, XFS_MAX_IO_LOG); + return -EINVAL; } return 0; -- 2.11.0