/* * linux/fs/ufs/swab.h * * Copyright (C) 1997, 1998 Francois-Rene Rideau * Copyright (C) 1998 Jakub Jelinek * Copyright (C) 2001 Christoph Hellwig */ #ifndef _UFS_SWAB_H #define _UFS_SWAB_H /* * Notes: * HERE WE ASSUME EITHER BIG OR LITTLE ENDIAN UFSes * in case there are ufs implementations that have strange bytesexes, * you'll need to modify code here as well as in ufs_super.c and ufs_fs.h * to support them. */ enum { BYTESEX_LE, BYTESEX_BE }; static inline u64 fs64_to_cpu(struct super_block *sbp, __fs64 n) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) return le64_to_cpu((__force __le64)n); else return be64_to_cpu((__force __be64)n); } static inline __fs64 cpu_to_fs64(struct super_block *sbp, u64 n) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) return (__force __fs64)cpu_to_le64(n); else return (__force __fs64)cpu_to_be64(n); } static inline u32 fs32_to_cpu(struct super_block *sbp, __fs32 n) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) return le32_to_cpu((__force __le32)n); else return be32_to_cpu((__force __be32)n); } static inline __fs32 cpu_to_fs32(struct super_block *sbp, u32 n) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) return (__force __fs32)cpu_to_le32(n); else return (__force __fs32)cpu_to_be32(n); } static inline void fs32_add(struct super_block *sbp, __fs32 *n, int d) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) le32_add_cpu((__le32 *)n, d); else be32_add_cpu((__be32 *)n, d); } static inline void fs32_sub(struct super_block *sbp, __fs32 *n, int d) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) le32_add_cpu((__le32 *)n, -d); else be32_add_cpu((__be32 *)n, -d); } static inline u16 fs16_to_cpu(struct super_block *sbp, __fs16 n) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) return le16_to_cpu((__force __le16)n); else return be16_to_cpu((__force __be16)n); } static inline __fs16 cpu_to_fs16(struct super_block *sbp, u16 n) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) return (__force __fs16)cpu_to_le16(n); else return (__force __fs16)cpu_to_be16(n); } static inline void fs16_add(struct super_block *sbp, __fs16 *n, int d) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) le16_add_cpu((__le16 *)n, d); else be16_add_cpu((__be16 *)n, d); } static inline void fs16_sub(struct super_block *sbp, __fs16 *n, int d) { if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE) le16_add_cpu((__le16 *)n, -d); else be16_add_cpu((__be16 *)n, -d); } #endif /* _UFS_SWAB_H */ 2a6920f044d9bf6207a'/>
path: root/net/sched/sch_tbf.c
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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /net/sched/sch_tbf.c
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'net/sched/sch_tbf.c')