/* * linux/fs/hpfs/dentry.c * * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999 * * dcache operations */ #include "hpfs_fn.h" /* * Note: the dentry argument is the parent dentry. */ static int hpfs_hash_dentry(const struct dentry *dentry, struct qstr *qstr) { unsigned long hash; int i; unsigned l = qstr->len; if (l == 1) if (qstr->name[0]=='.') goto x; if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x; hpfs_adjust_length(qstr->name, &l); /*if (hpfs_chk_name(qstr->name,&l))*/ /*return -ENAMETOOLONG;*/ /*return -ENOENT;*/ x: hash = init_name_hash(dentry); for (i = 0; i < l; i++) hash = partial_name_hash(hpfs_upcase(hpfs_sb(dentry->d_sb)->sb_cp_table,qstr->name[i]), hash); qstr->hash = end_name_hash(hash); return 0; } static int hpfs_compare_dentry(const struct dentry *dentry, unsigned int len, const char *str, const struct qstr *name) { unsigned al = len; unsigned bl = name->len; hpfs_adjust_length(str, &al); /*hpfs_adjust_length(b->name, &bl);*/ /* * 'str' is the nane of an already existing dentry, so the name * must be valid. 'name' must be validated first. */ if (hpfs_chk_name(name->name, &bl)) return 1; if (hpfs_compare_names(dentry->d_sb, str, al, name->name, bl, 0)) return 1; return 0; } const struct dentry_operations hpfs_dentry_operations = { .d_hash = hpfs_hash_dentry, .d_compare = hpfs_compare_dentry, }; td class='sub'>net-next plumbingsTobias Klauser
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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 /include/scsi/scsi_bsg_iscsi.h
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 'include/scsi/scsi_bsg_iscsi.h')