AuxXxilium/linux_dsm_epyc7002
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ceph: let MDS adjust readdir 'frag'

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If readdir 'frag' is adjusted, readdir 'offset' should be reset.
Otherwise some dentries may be lost when readdir and fragmenting
directory happen at the some.

Another way to fix this issue is let MDS adjust readdir 'frag'.
The code that handles MDS reply reset the readdir 'offset' if
the readdir reply is different than the requested one.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
This commit is contained in:
Yan, Zheng 2014-03-03 09:20:44 +08:00
parent dcd3cc05e5
commit 15289dc85b
1 changed files with 0 additions and 3 deletions
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3
fs/ceph/dir.c
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@ -322,9 +322,6 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
fi->last_readdir = NULL;
}
/* requery frag tree, as the frag topology may have changed */
frag = ceph_choose_frag(ceph_inode(inode), frag, NULL, NULL);
dout("readdir fetching %llx.%llx frag %x offset '%s'\n",
ceph_vinop(inode), frag, fi->last_name);
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);