From dd2d535e3fb29d744aa8905c7d55199ce6bbfa49 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 28 Oct 2019 08:41:43 -0700 Subject: [PATCH] xfs: cleanup calculating the stat optimal I/O size Move xfs_preferred_iosize to xfs_iops.c, unobsfucate it and also handle the realtime special case in the helper. Signed-off-by: Christoph Hellwig Reviewed-by: Eric Sandeen Reviewed-by: Darrick J. Wong Signed-off-by: Darrick J. Wong --- fs/xfs/xfs_iops.c | 47 ++++++++++++++++++++++++++++++++++++---------- fs/xfs/xfs_mount.h | 24 ----------------------- 2 files changed, 37 insertions(+), 34 deletions(-) diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c index 404f2dd58698..b6dbfd8eb6a1 100644 --- a/fs/xfs/xfs_iops.c +++ b/fs/xfs/xfs_iops.c @@ -484,6 +484,42 @@ xfs_vn_get_link_inline( return link; } +static uint32_t +xfs_stat_blksize( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + + /* + * If the file blocks are being allocated from a realtime volume, then + * always return the realtime extent size. + */ + if (XFS_IS_REALTIME_INODE(ip)) + return xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; + + /* + * Allow large block sizes to be reported to userspace programs if the + * "largeio" mount option is used. + * + * If compatibility mode is specified, simply return the basic unit of + * caching so that we don't get inefficient read/modify/write I/O from + * user apps. Otherwise.... + * + * If the underlying volume is a stripe, then return the stripe width in + * bytes as the recommended I/O size. It is not a stripe and we've set a + * default buffered I/O size, return that, otherwise return the compat + * default. + */ + if (!(mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)) { + if (mp->m_swidth) + return mp->m_swidth << mp->m_sb.sb_blocklog; + if (mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) + return 1U << max(mp->m_readio_log, mp->m_writeio_log); + } + + return PAGE_SIZE; +} + STATIC int xfs_vn_getattr( const struct path *path, @@ -543,16 +579,7 @@ xfs_vn_getattr( stat->rdev = inode->i_rdev; break; default: - if (XFS_IS_REALTIME_INODE(ip)) { - /* - * If the file blocks are being allocated from a - * realtime volume, then return the inode's realtime - * extent size or the realtime volume's extent size. - */ - stat->blksize = - xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog; - } else - stat->blksize = xfs_preferred_iosize(mp); + stat->blksize = xfs_stat_blksize(ip); stat->rdev = 0; break; } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index fdb60e09a9c5..f69e370db341 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -267,30 +267,6 @@ typedef struct xfs_mount { #define XFS_WSYNC_READIO_LOG 15 /* 32k */ #define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */ -/* - * Allow large block sizes to be reported to userspace programs if the - * "largeio" mount option is used. - * - * If compatibility mode is specified, simply return the basic unit of caching - * so that we don't get inefficient read/modify/write I/O from user apps. - * Otherwise.... - * - * If the underlying volume is a stripe, then return the stripe width in bytes - * as the recommended I/O size. It is not a stripe and we've set a default - * buffered I/O size, return that, otherwise return the compat default. - */ -static inline unsigned long -xfs_preferred_iosize(xfs_mount_t *mp) -{ - if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) - return PAGE_SIZE; - return (mp->m_swidth ? - (mp->m_swidth << mp->m_sb.sb_blocklog) : - ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? - (1 << (int)max(mp->m_readio_log, mp->m_writeio_log)) : - PAGE_SIZE)); -} - #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \ ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN) #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)