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VFS: Make pathwalk use d_is_reg() rather than S_ISREG() 

Make pathwalk use d_is_reg() rather than S_ISREG() to determine whether to
honour O_TRUNC.  Since this occurs after complete_walk(), the dentry type
field cannot change and the inode pointer cannot change as we hold a ref on
the dentry, so this should be safe.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells 2015-03-17 22:16:40 +00:00 committed by Al Viro
parent 7ceab50c0b
commit 4bbcbd3b11
1 changed files with 1 additions and 1 deletions
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2
fs/namei.c
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@ -3077,7 +3077,7 @@ finish_open:
error = -ENOTDIR;
if ((nd->flags & LOOKUP_DIRECTORY) && !d_can_lookup(nd->path.dentry))
goto out;
if (!S_ISREG(nd->inode->i_mode))
if (!d_is_reg(nd->path.dentry))
will_truncate = false;
if (will_truncate) {