From mboxrd@z Thu Jan 1 00:00:00 1970 From: Deepa Dinamani Subject: [PATCH v5 4/5] vfs: Add timestamp_truncate() api Date: Sat, 8 Apr 2017 12:37:46 -0700 Message-ID: <1491680267-11171-5-git-send-email-deepa.kernel@gmail.com> References: <1491680267-11171-1-git-send-email-deepa.kernel@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: arnd@arndb.de, y2038@lists.linaro.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, tglx@linutronix.de, torvalds@linux-foundation.org To: viro@zeniv.linux.org.uk, tytso@mit.edu, adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org Return-path: In-Reply-To: <1491680267-11171-1-git-send-email-deepa.kernel@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: y2038-bounces@lists.linaro.org Sender: "Y2038" List-Id: linux-ext4.vger.kernel.org dGltZXNwZWNfdHJ1bmMoKSBmdW5jdGlvbiBpcyB1c2VkIHRvIHRydW5jYXRlIGEKZmlsZXN5c3Rl bSB0aW1lc3RhbXAgdG8gdGhlIHJpZ2h0IGdyYW51bGFyaXR5LgpCdXQsIHRoZSBmdW5jdGlvbiBk b2VzIG5vdCBjbGFtcCB0dl9zZWMgcGFydCBvZiB0aGUKdGltZXN0YW1wcyBhY2NvcmRpbmcgdG8g dGhlIGZpbGVzeXN0ZW0gdGltZXN0YW1wIGxpbWl0cy4KCkFsc28sIHRpbWVzcGVjX3RydW5jKCkg aXMgZXhjbHVzaXZlbHkgdXNlZCBmb3IgZmlsZXN5c3RlbQp0aW1lc3RhbXBzLiBNb3ZlIHRoZSBh cGkgdG8gYmUgcGFydCBvZiB2ZnMuCgpUaGUgcmVwbGFjZW1lbnQgYXBpOiB0aW1lc3RhbXBfdHJ1 bmNhdGUoKSBhbHNvIGFsdGVycyB0aGUKc2lnbmF0dXJlIG9mIHRoZSBmdW5jdGlvbiB0byBhY2Nv bW1vZGF0ZSBmaWxlc3lzdGVtCnRpbWVzdGFtcCBjbGFtcGluZyBhY2NvcmRpbmcgdG8gZmxlc3lz dGVtIGxpbWl0cy4KCk5vdGUgdGhhdCB0aGUgY2xhbXBfdCBtYWNybyBpcyB1c2VkIGZvciBjbGFt cGluZyBoZXJlIGFzIHZmcwppcyBub3QgeWV0IHVzaW5nIHN0cnVjdCB0aW1lc3BlYzY0IGludGVy bmFsbHkuIFRoaXMgaXMKcmVxdWlyZWQgZm9yIGNvbXBpbGF0aW9uIHB1cnBvc2VzLgpBbHNvIG5v dGUgdGhhdCBjbGFtcCB3b24ndCBkbyB0aGUgcmlnaHQgdGhpbmcgZm9yIHRpbWVzdGFtcHMKYmV5 b25kIDIwMzggb24gMzItYml0IG1hY2hpbmVzIHVudGlsIHRoZSB2ZnMgdXNlcyB0aW1lc3BlYzY0 LgpBZnRlciB0aGUgdmZzIGlzIHRyYW5zaXRpb25lZCB0byB1c2UgdGltZXNwZWM2NCBmb3IgdGlt ZXN0YW1wcywKY2xhbXBfdCgpIGNhbiBiZSByZXBsYWNlZCBieSBjbGFtcCgpLgoKU2lnbmVkLW9m Zi1ieTogRGVlcGEgRGluYW1hbmkgPGRlZXBhLmtlcm5lbEBnbWFpbC5jb20+Ci0tLQogZnMvaW5v ZGUuYyB8IDMyICsrKysrKysrKysrKysrKysrKysrKysrKysrKysrKystCiAxIGZpbGUgY2hhbmdl ZCwgMzEgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL2ZzL2lub2Rl LmMgYi9mcy9pbm9kZS5jCmluZGV4IGEwYzE1MjIuLjhhZDU1NjEgMTAwNjQ0Ci0tLSBhL2ZzL2lu b2RlLmMKKysrIGIvZnMvaW5vZGUuYwpAQCAtMjEwMyw2ICsyMTAzLDM2IEBAIHZvaWQgaW5vZGVf bm9oaWdobWVtKHN0cnVjdCBpbm9kZSAqaW5vZGUpCiBFWFBPUlRfU1lNQk9MKGlub2RlX25vaGln aG1lbSk7CiAKIC8qKgorICogdGltZXN0YW1wX3RydW5jYXRlIC0gVHJ1bmNhdGUgdGltZXNwZWMg dG8gYSBncmFudWxhcml0eQorICogQHQ6IFRpbWVzcGVjCisgKiBAaW5vZGU6IGlub2RlIGJlaW5n IHVwZGF0ZWQKKyAqCisgKiBUcnVuY2F0ZSBhIHRpbWVzcGVjIHRvIHRoZSBncmFudWxhcml0eSBz dXBwb3J0ZWQgYnkgdGhlIGZzCisgKiBjb250YWluaW5nIHRoZSBpbm9kZS4gQWx3YXlzIHJvdW5k cyBkb3duLiBncmFuIG11c3QKKyAqIG5vdCBiZSAwIG5vciBncmVhdGVyIHRoYW4gYSBzZWNvbmQg KE5TRUNfUEVSX1NFQywgb3IgMTBeOSBucykuCisgKi8KK3N0cnVjdCB0aW1lc3BlYyB0aW1lc3Rh bXBfdHJ1bmNhdGUoc3RydWN0IHRpbWVzcGVjIHQsIHN0cnVjdCBpbm9kZSAqaW5vZGUpCit7CisJ c3RydWN0IHN1cGVyX2Jsb2NrICpzYiA9IGlub2RlLT5pX3NiOworCXVuc2lnbmVkIGludCBncmFu ID0gc2ItPnNfdGltZV9ncmFuOworCisJdC50dl9zZWMgPSBjbGFtcF90KHRpbWU2NF90LCB0LnR2 X3NlYywgc2ItPnNfdGltZV9taW4sIHNiLT5zX3RpbWVfbWF4KTsKKworCS8qIEF2b2lkIGRpdmlz aW9uIGluIHRoZSBjb21tb24gY2FzZXMgMSBucyBhbmQgMSBzLiAqLworCWlmIChncmFuID09IDEp IHsKKwkJLyogbm90aGluZyAqLworCX0gZWxzZSBpZiAoZ3JhbiA9PSBOU0VDX1BFUl9TRUMpIHsK KwkJdC50dl9uc2VjID0gMDsKKwl9IGVsc2UgaWYgKGdyYW4gPiAxICYmIGdyYW4gPCBOU0VDX1BF Ul9TRUMpIHsKKwkJdC50dl9uc2VjIC09IHQudHZfbnNlYyAlIGdyYW47CisJfSBlbHNlIHsKKwkJ V0FSTigxLCAiaWxsZWdhbCBmaWxlIHRpbWUgZ3JhbnVsYXJpdHk6ICV1IiwgZ3Jhbik7CisJfQor CXJldHVybiB0OworfQorRVhQT1JUX1NZTUJPTCh0aW1lc3RhbXBfdHJ1bmNhdGUpOworCisvKioK ICAqIGN1cnJlbnRfdGltZSAtIFJldHVybiBGUyB0aW1lCiAgKiBAaW5vZGU6IGlub2RlLgogICoK QEAgLTIxMjEsNiArMjE1MSw2IEBAIHN0cnVjdCB0aW1lc3BlYyBjdXJyZW50X3RpbWUoc3RydWN0 IGlub2RlICppbm9kZSkKIAkJcmV0dXJuIG5vdzsKIAl9CiAKLQlyZXR1cm4gdGltZXNwZWNfdHJ1 bmMobm93LCBpbm9kZS0+aV9zYi0+c190aW1lX2dyYW4pOworCXJldHVybiB0aW1lc3RhbXBfdHJ1 bmNhdGUobm93LCBpbm9kZSk7CiB9CiBFWFBPUlRfU1lNQk9MKGN1cnJlbnRfdGltZSk7Ci0tIAoy LjcuNAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWTIw MzggbWFpbGluZyBsaXN0ClkyMDM4QGxpc3RzLmxpbmFyby5vcmcKaHR0cHM6Ly9saXN0cy5saW5h cm8ub3JnL21haWxtYW4vbGlzdGluZm8veTIwMzgK